STUSB4500QTR
USB-PD sink controller — STMicroelectronics — C2678061 — board-p U1 — rec-stusb4500qtr
Everything below is projected from this project's stored component evidence. Values keep the exact wording, conditions, units and verdicts they were recorded with — nothing here is re-typed, corrected, or combined into an overall judgement about the part.
This record in the catalog: STUSB4500QTR
Identity
Record ID:
rec-stusb4500qtrRecord kind: standalone
Manufacturer part number:
STUSB4500QTRManufacturer: STMicroelectronics
Function: USB-PD sink controller
LCSC ID:
C2678061Package:
QFN-24_L4.0-W4.0-P0.50-BL-EP2.8Inventory line:
line-c2678061Also known as:
USB PD sink controller,NVM controllerOwner skill:
component-stusb4500qtrFit: Fitted
Identity state: UNRESOLVED
Source state: SOURCE UNAVAILABLE
Coverage: 6 open of 6 published
Component references
Selected document
Datasheet PDF
STUSB4500 standalone USB PD sink controller with short-to-VBUS protections
Footprint preview
QFN-24_L4.0-W4.0-P0.50-BL-EP2.8. Open SVGPackage model
Interactive inspection requires JavaScript and WebGL. The package identity remains available in this page.
This geometry represents a shared footprint package and may not exactly match the manufacturer part.
Placements
Every position this exact line occupies in the as-built design. One line may be placed many times and across more than one board.
| Board | Reference designator |
|---|---|
| board-p | U1 |
Coverage
Coverage is stated one domain at a time and is never rolled up. A domain marked open is a question that has not been answered; it is not a finding that the part is unsuitable. A record with no open domains has not thereby been declared safe.
identity/package/pinout
Coverage ID:
cov-stusb-identityStatus: OPEN
Reason: Exact DS12499 Rev 8 bytes are reproducibly retained from a manufacturer-document mirror, but primary-only trust and project symbol/footprint/as-built evidence remain open for fact-stusb-manufacturer, fact-stusb-order-code, and fact-stusb-pin-states; dated 2026-08-02 and 2026-08-14 direct st.com retrievals (fact-stusb-ds12499-primary-attempt) found the primary source unavailable, so all remain UNSOURCED
Facts in this domain:
Blocked by: these facts must be resolved before the domain can close. Each is listed in full under Facts.
unpowered/reset/startup/normal/fault/disconnect behavior
Coverage ID:
cov-stusb-statesStatus: OPEN
Reason: Exact DS12499 Rev 8 and UM2650 Rev 3 bytes are reproducibly retained from mirrors; primary-only trust in these mirror bytes has not been established, and state behavior still requires programmed/as-built bench confirmation for fact-stusb-ccdb, fact-stusb-disch, fact-stusb-vbus-vs-disch, fact-stusb-vben, fact-stusb-load-time, fact-stusb-state-sequence, fact-stusb-nvm-load, fact-stusb-volatile-pdo, fact-stusb-discharge-registers, and fact-stusb-fault-status; dated 2026-08-02 and 2026-08-14 direct st.com retrievals (fact-stusb-ds12499-primary-attempt, fact-stusb-um2650-primary-attempt) found both primary sources unavailable, so all remain UNSOURCED
Facts in this domain:
Blocked by: these facts must be resolved before the domain can close. Each is listed in full under Facts.
project NVM image and factory-state capture
Coverage ID:
cov-stusb-nvmStatus: OPEN
Reason: No as-built 40-byte dump or project-normalized image has been supplied for fact-stusb-artifact
Facts in this domain:
Blocked by: these facts must be resolved before the domain can close. Each is listed in full under Facts.
NVM write endurance and production write budget
Coverage ID:
cov-stusb-enduranceStatus: OPEN
Reason: No manufacturer-primary endurance row is present in the retained reviewed extracts for fact-stusb-endurance
Facts in this domain:
Blocked by: these facts must be resolved before the domain can close. Each is listed in full under Facts.
safe power/provisioning/bench discriminators
Coverage ID:
cov-stusb-bringupStatus: OPEN
Reason: Operating/state mirror bytes are available, but primary-only trust for fact-stusb-supplies, fact-stusb-vdd-absolute-max, fact-stusb-cc-absolute-max, and fact-stusb-vbus-pin-absolute-max, plus project NVM/readback/power-cycle evidence and bench waveforms, remain open; dated 2026-08-02 and 2026-08-14 direct st.com retrievals (fact-stusb-ds12499-primary-attempt, fact-stusb-um2650-primary-attempt) found both primary sources unavailable, so all remain UNSOURCED
Facts in this domain:
Blocked by: these facts must be resolved before the domain can close. Each is listed in full under Facts.
VREG_2V7 external DC loading and NVM-jig voltage matching
Coverage ID:
cov-stusb-vreg2v7-loadStatus: OPEN
Reason: Pin 23 (VREG_2V7) is documented decoupling-only in DS12499, yet Board P loads it with R15/R16 4.7k I2C pull-ups and exposes it on debug pogo pad J3.3 (net U1.23 C30.2 R15.2 R16.2 J3.3); closure requires a manufacturer-primary locator authorizing this external DC load (or a re-route decision, out of this plan's scope) plus confirmation that the NVM-programming jig's logic levels match 2.7 V before issue #34's programming artifact executes
Facts in this domain:
Blocked by: these facts must be resolved before the domain can close. Each is listed in full under Facts.
Facts
Each fact keeps its value, its unit, the conditions it holds under, where it came from and how far it has been confirmed as separate fields, because they are separate claims. A value without its conditions is not the same fact, and a verdict is about the evidence for the value, not about the part.
ABSOLUTE_MAXIMUM
A never-exceed limit. Reaching it may damage the part; it is not an operating target and there is no margin implied by it.
| Fact | Value | Unit | Conditions | Verdict | Provenance | Evidence |
|---|---|---|---|---|---|---|
fact-stusb-vdd-absolute-max | 28 | V | VDD pin absolute maximum; not an operating target; manufacturer-authored Rev 8 bytes are retained only through a mirror | UNSOURCED | UNVERIFIED | src-stusb-ds12499-ratings — src-stusb-ds12499: Section 7.1, Table 20, row VDD Supply voltage on VDD pin |
fact-stusb-cc-absolute-max | 22 | V | CC1, CC2, CC1DB and CC2DB high-voltage absolute maximum; not an operating target; mirror evidence | UNSOURCED | UNVERIFIED | src-stusb-ds12499-ratings — src-stusb-ds12499: Section 7.1, Table 20, grouped rows VCC1/VCC2/VCC1DB/VCC2DB |
fact-stusb-vbus-pin-absolute-max | 28 | V | VBUS_EN_SNK, VBUS_VS_DISCH, DISCH and POWER_OK2 high-voltage absolute maximum; not an operating target; mirror evidence | UNSOURCED | UNVERIFIED | src-stusb-ds12499-ratings — src-stusb-ds12499: Section 7.1, Table 20, grouped high-voltage VBUS-pin rows |
fact-stusb-endurance | not established by retained extract | NONE | NVM write-cycle budget; do not authorize production cycling | UNSOURCED | UNVERIFIED | src-stusb-ds12499: Section 5 start-up configuration; no retained endurance row |
RECOMMENDED_OPERATION
The range the manufacturer intends the part to be used in. Always narrower than the absolute maximum.
| Fact | Value | Unit | Conditions | Verdict | Provenance | Evidence |
|---|---|---|---|---|---|---|
fact-stusb-supplies | VDD 4.1..22; VSYS 3.0..5.5 | V | Table 21 operating range; never infer absolute-max as operating permission | UNSOURCED | UNVERIFIED | src-stusb-ds12499: Section 7.2, Table 21 rows VDD and VSYS |
GUARANTEED_ELECTRICAL
A parameter the manufacturer guarantees over the stated conditions, usually with minimum, typical and maximum values.
| Fact | Value | Unit | Conditions | Verdict | Provenance | Evidence |
|---|---|---|---|---|---|---|
fact-stusb-load-time | 30 | ms | I2C registers loading at power-up or after reset | UNSOURCED | UNVERIFIED | src-stusb-ds12499: Section 7.3, Table 22 row TLOAD |
TRANSIENT
Behaviour during a short event — startup, a switching edge, a fault or a surge.
| Fact | Value | Unit | Conditions | Verdict | Provenance | Evidence |
|---|---|---|---|---|---|---|
fact-stusb-disch | 500 | mA | maximum current when DISCH pin is used as internal discharge input through series resistor; alternatively active-low open-drain external switch control | UNSOURCED | UNVERIFIED | src-stusb-ds12499: Section 2.2.5 DISCH, maximum discharge-current sentence |
fact-stusb-vbus-vs-disch | 50 | mA | maximum VBUS_VS_DISCH discharge current through mandatory series resistor; pin also senses and monitors receptacle-side VBUS | UNSOURCED | UNVERIFIED | src-stusb-ds12499: Section 2.2.12 VBUS_VS_DISCH, current-limit row |
PROJECT_STATE
A value this project recorded about how the part is used here — a chosen operating point, a net assignment, or a derived figure. Not a manufacturer specification.
| Fact | Value | Unit | Conditions | Verdict | Provenance | Evidence |
|---|---|---|---|---|---|---|
fact-stusb-manufacturer | STMicroelectronics | NONE | exact order code STUSB4500QTR | UNSOURCED | UNVERIFIED | src-stusb-ds12499: title block and device summary row STUSB4500QTR |
fact-stusb-order-code | QFN-24 EP 4x4, marking 4500 | NONE | STUSB4500QTR order code | UNSOURCED | UNVERIFIED | src-stusb-ds12499: title block, Device summary row STUSB4500QTR |
fact-stusb-pin-states | CC1/CC2 Hi-Z during reset; SCL/SDA pulled down with neither VDD nor VSYS; open-drain status outputs require pull-ups | NONE | reset or unpowered state as stated | UNSOURCED | UNVERIFIED | src-stusb-ds12499: Sections 2.2.1 and 2.2.4, Table 1 pin rows |
fact-stusb-ccdb | Connect CC1DB to CC1 and CC2DB to CC2 for passive dead-battery Rd; ground CCDB pins when mode is unused | NONE | device unpowered/dead-battery support selection | UNSOURCED | UNVERIFIED | src- |
fact-stusb-vben | Hi-Z detached; 0 asserted attached by default; configurable to assert only for PDO2/PDO3 | NONE | VBUS_EN_SNK active-low high-voltage open-drain output | UNSOURCED | UNVERIFIED | src-stusb-ds12499: Section 2.2.10, Table 6 VBUS_EN_SNK configuration rows |
fact-stusb-state-sequence | PE_INIT -> SNK_STARTUP/DISCOVERY/WAIT/EVALUATE/SELECT/TRANSITION -> SNK_READY; hard-reset shutdown/recovery and error-recovery are distinct states | NONE | policy-engine state register 0x29 during attach/negotiation/fault | UNSOURCED | UNVERIFIED | src-stusb-um2650: Section 3.25, Table PE_FSM register values |
fact-stusb-nvm-load | startup register reset values marked initialized by NVM | NONE | after power-up or reset load completes | UNSOURCED | UNVERIFIED | src-stusb-um2650: Sections 3.22 and 3.60-3.72, register reset rows |
fact-stusb-volatile-pdo | PDO registers 0x85..0x90 are R/W volatile views initialized from NVM | NONE | runtime register writes do not by themselves prove persistent NVM programming | UNSOURCED | UNVERIFIED | src- |
fact-stusb-discharge-registers | 0x25 defaults 800 ms to 0 V and 270 ms transition; 0x26 bit7 can force discharge | NONE | standard NVM defaults; project image may differ | UNSOURCED | UNVERIFIED | src-stusb-um2650: Sections 3.22-3.23, register tables 0x25 and 0x26 |
fact-stusb-fault-status | 0x13 reports CC pull-up OVP/validity and VBUS discharge fault | NONE | fault and recovery diagnosis | UNSOURCED | UNVERIFIED | src-stusb-um2650: Section 3.14, CC_HW_FAULT_STATUS_1 register bit rows |
fact-stusb-reference-design | STEVAL-ISC005V1 demonstrates autonomous dead-battery negotiation, switched paths, discharge, and programming/debug interface | NONE | reference topology only; not proof of Board P behavior | NEEDS BENCH | REFERENCE-DESIGN | src-stusb-um2398: Section 1.1 board overview and schematic figures |
fact-stusb-artifact | normalized 40-byte NVM image, SHA-256, decoded fields, tool/library version, pre-write dump, post-write readback, reset readback, power-cycle readback | NONE | project acceptance artifact; no image currently retained in this skill | NEEDS BENCH | PROJECT-CHOICE | src- |
fact-stusb-ds12499-primary-attempt | direct manufacturer-primary retrieval of DS12499 from st.com is not established; retained bytes remain a reproducible mirror only | NONE | attempted 2026-08-02 (every st.com path timed out and a community.st.com mirror redirected to its forum homepage) and 2026-08-14 (HTTP/2 stream error then HTTP/1.1 timeouts on every st.com path while control fetches succeeded) | UNSOURCED | UNVERIFIED | src-stusb-ds12499-primary-attempt: cover title block, inaccessible retrieval response |
fact-stusb-um2650-primary-attempt | direct manufacturer-primary retrieval of UM2650 from st.com is not established; retained bytes remain a reproducible mirror only | NONE | attempted 2026-08-02 (canonical and legacy st.com paths both timed out) and 2026-08-14 (canonical path timed out again while control fetches succeeded) | UNSOURCED | UNVERIFIED | src-stusb-um2650-primary-attempt: cover title block, inaccessible retrieval response |
fact-stusb-vreg2v7-load | VREG_2V7 (pin 23) bridges to C30.2, R15.2, R16.2 and debug pogo pad J3.3; R15/R16 are 4.7k I2C pull-ups fed from this pin rather than VDD/VSYS | NONE | current Board P generator connectivity; DS12499 documents pin 23 as 2.7 V regulator decoupling only and does not authorize external DC loading | NEEDS BENCH | PROJECT-CHOICE | src-stusb-board-p-generator: NETS table row VREG_2V7 and rows SCL/SDA |
Pin maps
The mapping between schematic pins and PCB pads, or physical terminals for an external part, as recorded. A record may carry more than one map when the same part is documented in more than one context.
pinmap-stusb4500qtr
Symbol:
STUSB4500QTRFootprint:
QFN-24_L4.0-W4.0-P0.50-BL-EP2.8Pins: 25
Pin assignments
| Symbol pin | Name | Footprint pad | Function |
|---|---|---|---|
1 | CC1DB | 1 | dead-battery enable CC1 |
2 | CC1 | 2 | configuration channel 1 |
3 | NC | 3 | no connect |
4 | CC2 | 4 | configuration channel 2 |
5 | CC2DB | 5 | dead-battery enable CC2 |
6 | RESET | 6 | active-high reset |
7 | SCL | 7 | I2C clock |
8 | SDA | 8 | I2C data open drain |
9 | DISCH | 9 | internal discharge input or external discharge active-low OD |
10 | GND | 10 | ground |
11 | ATTACH | 11 | active-low open-drain attach |
12 | ADDR0 | 12 | I2C address |
13 | ADDR1 | 13 | I2C address |
14 | POWER_OK3 | 14 | active-low open-drain contract flag |
15 | GPIO | 15 | configurable active-low open-drain |
16 | VBUS_EN_SNK | 16 | active-low HV open-drain sink-path enable |
17 | A_B_SIDE | 17 | active-low open-drain orientation |
18 | VBUS_VS_DISCH | 18 | VBUS sense/monitor/internal discharge |
19 | ALERT | 19 | I2C interrupt active-low OD |
20 | POWER_OK2 | 20 | HV active-low OD contract flag |
21 | VREG_1V2 | 21 | 1.2 V regulator decoupling |
22 | VSYS | 22 | system supply or ground if unused |
23 | VREG_2V7 | 23 | 2.7 V regulator decoupling |
24 | VDD | 24 | VBUS-side supply |
25 | EP | 25 | exposed-pad ground |
Interactions
Behaviour that is not a property of this part alone. Each interaction names the records it spans, the conditions it holds under, and how far it has been confirmed. An interaction that spans several parts appears on every one of their pages, under the same identifier, because it is equally a fact about each.
int-stusb-netlist
Records involved:
rec-stusb4500qtr(this record)Conditions: Assert U1.24=VBUS_IN; U1.18 reaches VBUS_IN only through R14; U1.9 reaches VBUS_OUT only through R13; U1.16=VBEN drives the PMOS gate network; U1.1/5 bridge through R19/R20 to CC1/CC2; U1.22 and EP are GND; NC pins remain NC; U1.23=VREG_2V7 also bridges to R15.2/R16.2 (I2C pull-ups) and pogo pad J3.3, an external DC load beyond decoupling that DS12499 does not yet authorize
Verdict: UNSOURCED
Facts this rests on:
int-stusb-safe-power
Records involved:
rec-stusb4500qtr(this record)Conditions: First power with load disconnected and current limit; use VDD 4.1..22 V or VSYS 3.0..5.5 V, common-ground I2C, wait beyond TLOAD, confirm gate remains deasserted detached before attaching a compliant source
Verdict: NEEDS BENCH
Facts this rests on:
int-stusb-nvm-verification
Records involved:
rec-stusb4500qtr(this record)Conditions: Capture factory 40 bytes; diff intended normalized 40-byte image; write once within verified endurance; read all 40 bytes; reset and read; remove all power long enough for rails to collapse and read again; decode PDO/polarity/discharge fields and negotiate each intended profile
Verdict: NEEDS BENCH
Facts this rests on:
int-stusb-state-bench
Records involved:
rec-stusb4500qtr(this record)Conditions: Observe unpowered Rd, reset Hi-Z, startup load, attach/negotiation, SNK_READY, detach, hard reset, lower-PDO transition, forced fault, VBUS discharge, VBUS_EN_SNK and POWER_OK/ATTACH polarity with scope and register snapshots
Verdict: NEEDS BENCH
Facts this rests on:
int-stusb-cc-protection
Records involved:
rec-stusb4500qtr(this record),rec-pesd24vs1ubConditions: D6/D7 are DNP from CC1/CC2 to GND; if fitted, pin 1 must face CC and pin 2 GND; confirm capacitance and clamp behavior do not invalidate PD signaling or ST CC protection limits
Verdict: NEEDS BENCH
Facts this rests on:
fact-pesd-standoffon PESD24VS1UB,115fact-pesd-capacitanceon PESD24VS1UB,115fact-pesd-pinouton PESD24VS1UB,115
int-stusb-external-rd
Records involved:
rec-stusb4500qtr(this record),rec-rd-0603waf5101t5eConditions: R17/R18 are DNP CC-to-GND external Rd options while R19/R20 fit CCDB bridges; fitting both may parallel Rd and is prohibited until the exact intended topology and resistance tolerance are re-audited
Verdict: NEEDS BENCH
Facts this rests on:
fact-rd-valueon 0603WAF5101T5Efact-rd-toleranceon 0603WAF5101T5Efact-rd-fit-stateon 0603WAF5101T5E
Cross-component rules
Rules that span several parts at once and are published in full on the integration page. Each rule's verdict below is that rule's own — it is a statement about the cross-component question, not about this part — and the exact wording of what the rule refuses to conclude is published with the rule itself.
rule-rail-envelope— rail-envelope — rule verdict: UNSOURCED — Whether every part on the input rail stays inside its own recorded limits across a legal power contract, a mis-contract, and a transient clamp event.rule-usb-pd-nvm-load-switch— usb-pd-nvm-load-switch — rule verdict: UNSOURCED — How the power-delivery controller's stored configuration and its enable output drive the load switch, through every state from detached to fault.rule-evidence-chain— source-to-bench-chain — rule verdict: NEEDS BENCH — How far each claim has travelled from a manufacturer document towards a measurement on real hardware, stage by stage.
Sources
Every document cited above, with its identification, when it was retrieved, and what kind of authority it carries. Sources that could not be retrieved are listed too, with their unavailability stated, so a gap in the evidence is visible rather than absent.
STUSB4500 standalone USB PD sink controller with short-to-VBUS protections
Source ID:
src-stusb-ds12499Document number: DS12499
Revision: Rev 8
Document date: 2022-11
Retrieved: 2026-08-02
Authority: MANUFACTURER_MIRROR
Locator: Section 2, Table 1, QFN pin-function rows; Sections 2.2.1 through 2.2.16
Printed page: 4
Availability: AVAILABLE
Document URL: https:
/ / web. archive. org/ web/ 20231016233405id\ _ / http: / / www. st. com/ resource/ en/ datasheet/ stusb4500. pdf
STUSB4500 standalone USB PD sink controller with short-to-VBUS protections
Source ID:
src-stusb-ds12499-ratingsDocument number: DS12499
Revision: Rev 8
Document date: 2022-11
Retrieved: 2026-08-02
Authority: MANUFACTURER_MIRROR
Locator: Section 7.1, Table 20, absolute maximum rating rows VDD, CC/CCDB and high-voltage VBUS pins
Printed page: 27
Availability: AVAILABLE
Document URL: https:
/ / web. archive. org/ web/ 20231016233405id\ _ / http: / / www. st. com/ resource/ en/ datasheet/ stusb4500. pdf
The STUSB4500 software programming guide
Source ID:
src-stusb-um2650Document number: UM2650
Revision: Rev 3
Document date: 2023-01-23
Retrieved: 2026-08-02
Authority: MANUFACTURER_MIRROR
Locator: Sections 3.22 through 3.25, register tables 0x25 through 0x29; Sections 3.60 through 3.72
Printed page: 24
Availability: AVAILABLE
Getting started with the STEVAL-ISC005V1 evaluation board for STUSB4500
Source ID:
src-stusb-um2398Document number: UM2398
Revision: Rev 1
Document date: 2018-02
Retrieved: 2026-08-02
Authority: REFERENCE_DESIGN
Locator: Section 1.1, board overview and PDO list; schematic figures
Printed page: 2
Availability: SOURCE UNAVAILABLE
STSW-STUSB004 NVM customization tool
Source ID:
src-stusb-stsw004Document number: DB3902
Revision: Rev 2
Document date: 2020-12
Retrieved: 2026-08-02
Authority: MANUFACTURER_PRIMARY
Locator: Cover Description section, lines describing STUSB-NVM.h export and automatic NVM load
Printed page: 1
Availability: SOURCE UNAVAILABLE
Document URL: https:
/ / www. st. com/ resource/ en/ data\ _ brief/ stsw- stusb004. pdf
STUSB4500 standalone USB PD sink controller with short-to-VBUS protections
Source ID:
src-stusb-ds12499-primary-attemptDocument number: DS12499
Revision: Rev 8
Document date: 2022-11
Retrieved: 2026-08-14
Authority: MANUFACTURER_PRIMARY
Locator: Cover title block and Section 7.1 Table 20 rows; direct st.com retrieval attempted for primary-only trust recovery per issue #43
Printed page: 1
Availability: SOURCE UNAVAILABLE
Document URL: https:
/ / www. st. com/ resource/ en/ datasheet/ stusb4500. pdf
The STUSB4500 software programming guide
Source ID:
src-stusb-um2650-primary-attemptDocument number: UM2650
Revision: Rev 3
Document date: 2023-01-23
Retrieved: 2026-08-14
Authority: MANUFACTURER_PRIMARY
Locator: Cover title block and Sections 3.22-3.26 register tables; direct st.com retrieval attempted for primary-only trust recovery per issue #43
Printed page: 1
Availability: SOURCE UNAVAILABLE
Document URL: https:
/ / www. st. com/ resource/ en/ user\ _ manual/ um2650- the- stusb4500- software- programing- guide- stmicroelectronics. pdf
Board P generated schematic specification
Source ID:
src-stusb-board-p-generatorDocument number: board-p-spec
Revision: 410bc1a342286dd6c205d6dcec0f248b8a963987
Document date: 2026-08-01
Retrieved: 2026-08-02
Authority: PROJECT_GENERATOR
Locator: NETS table row VREG_2V7 (U1.23, C30.2, R15.2, R16.2, J3.3) and rows SCL/SDA (R15.1/R16.1); pin-map function 'VREG_2V7 regulator decoupling' for U1 pin 23
Printed page: source
Availability: AVAILABLE
Legend
What the recorded terms on this page mean, in ordinary words. The exact terms above are the ones that count; these descriptions explain them and never replace them.
Verdict
| Recorded term | What it means |
|---|---|
NEEDS BENCH | Cannot be settled from documents. It needs measurement on real hardware before it can be relied on. |
UNSOURCED | No accepted source backs this value yet. Treat it as a claim, not a fact. |
Provenance
| Recorded term | What it means |
|---|---|
PROJECT-CHOICE | A decision made by this project. No vendor asserts it. |
REFERENCE-DESIGN | Taken from a vendor reference design or application note rather than the device specification. |
UNVERIFIED | Recorded, but not yet backed by an accepted source. |
Fact class
| Recorded term | What it means |
|---|---|
ABSOLUTE_MAXIMUM | A never-exceed limit. Reaching it may damage the part; it is not an operating target and there is no margin implied by it. |
GUARANTEED_ELECTRICAL | A parameter the manufacturer guarantees over the stated conditions, usually with minimum, typical and maximum values. |
PROJECT_STATE | A value this project recorded about how the part is used here — a chosen operating point, a net assignment, or a derived figure. Not a manufacturer specification. |
RECOMMENDED_OPERATION | The range the manufacturer intends the part to be used in. Always narrower than the absolute maximum. |
TRANSIENT | Behaviour during a short event — startup, a switching edge, a fault or a surge. |
Coverage status
| Recorded term | What it means |
|---|---|
OPEN | Unresolved. Open means the question has not been answered, not that the part is unsafe — the reason states what is missing. |
Source availability
| Recorded term | What it means |
|---|---|
AVAILABLE | The document was retrieved and is on record. |
SOURCE UNAVAILABLE | The document could not be retrieved. It stays listed so the gap is visible; anything resting on it remains unsourced. |
Source authority
| Recorded term | What it means |
|---|---|
MANUFACTURER_MIRROR | A copy of a manufacturer document hosted elsewhere. Usable, but weaker than the manufacturer's own copy. |
MANUFACTURER_PRIMARY | The manufacturer's own document for this exact part. |
PROJECT_GENERATOR | A document this project generated, such as a schematic or netlist export. |
REFERENCE_DESIGN | A reference design or application note rather than a device specification. |
Identity state
| Recorded term | What it means |
|---|---|
UNRESOLVED | The exact orderable part is not yet confirmed. Substituting a same-name part from another vendor is not permitted on that basis. |
Source state
| Recorded term | What it means |
|---|---|
SOURCE UNAVAILABLE | No document backing this line could be retrieved. |
Unit
| Recorded term | What it means |
|---|---|
NONE | The value is not a physical quantity, so it carries no unit. Recorded as `NONE`. |
Raw agent resource
This page is generated from a stored evidence bundle and does not restate it. The bundle is the source of truth: where the two ever disagree, the bundle is right and this page is stale.
Open the owning bundle component-stusb4500qtr