component
PCA82C251M
Public Made by Adomby adom
HGSEMI CAN Transceivers, SOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownPCA82C251M
HGSEMI · CAN Transceivers · SOP-8
PCA82C251M from HGSEMI, in a SOP-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | TXD | input | Transmit data input that drives the bus dominant when LOW and recessive when HIGH, with an internal pull-up to VCC, VIH of 2 V to VCC+0.3 V and VIL of -0.3 V to 0.8 V, and a dominant timeout (tdom 300 µs to 1000 µs) that disables the transceiver if TXD is held LOW too long. |
| 2 | GND | power_in | Ground reference pin for the transceiver; all voltages are referenced to this pin. |
| 3 | VCC | power_in | Supply voltage pin, with a recommended operating range of 4.75 V to 5.25 V and an absolute maximum rating of -0.3 V to 6 V (no time limit). |
| 4 | RXD | output | Receive data output that reflects the bus state (HIGH when recessive, LOW when dominant), with VOH of at least VCC-0.4 V at -0.4 mA in normal mode and a maximum DC voltage of VCC+0.3 V, and which becomes floating when VCC is lost. |
| 5 | SPLIT | power_out | Common-mode voltage regulator output that is active only in normal mode, sets the recessive bus common mode to 0.5 VCC (range 0.3 VCC to 0.7 VCC for -500 µA < IO < 500 µA), and is left floating in standby mode; its DC voltage must stay within -27 V to 40 V. |
| 6 | CANL | bidirectional | Low-level CAN bus line that carries the differential signal with a dominant output voltage of 0.5 V to 1.75 V (typ. 1.4 V) when TXD is LOW, and whose bus pin is protected to -27 V to 40 V DC. |
| 7 | CANH | bidirectional | High-level CAN bus line that carries the differential signal with a dominant output voltage of 3 V to 4.25 V (typ. 3.6 V) when TXD is LOW, and whose bus pin is protected to -27 V to 40 V DC. |
| 8 | STB | input | Standby mode control input where LOW selects normal mode and HIGH selects standby mode, with an internal pull-up to VCC, VIH of 2 V to VCC+0.3 V and VIL of -0.3 V to 0.8 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | HGSEMI |
| Package | SOP-8 |
| Category | Interface |
| Pins | 8 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Standby supply current | ICC | 5 | 10 | 15 | µA | Standby mode | 5 |
| Supply current, normal mode recessive | ICC | 2.5 | 5 | 10 | mA | Normal mode: recessive, VTXD = VCC | 5 |
| Supply current, normal mode dominant | ICC | 30 | 50 | 70 | mA | Normal mode: dominant, VTXD = 0 V | 5 |
| TXD high-level input voltage | VIH | 2 | V | 5 | |||
| TXD low-level input voltage | VIL | -0.3 | 0.8 | V | 5 | ||
| TXD high-level input current | IIH | -5 | 0 | 5 | µA | VTXD = VCC | 5 |
| TXD low-level input current | IIL | -100 | -200 | -300 | µA | Normal mode: VTXD = 0 V | 5 |
| TXD input capacitance | GI | 5 | 10 | pF | Not tested | 5 | |
| STB high-level input voltage | VIH | 2 | V | 5 | |||
| STB low-level input voltage | VIL | -0.3 | 0.8 | V | 5 | ||
| STB low-level input current | IIL | -1 | -4 | -10 | µA | VSTB = 0 V | 5 |
| RXD high-level output current | IOH | -0.1 | -0.4 | -1 | mA | Normal mode: VRXD = VCC − 0.4 V | 5 |
| RXD low-level output current | IOL | 2 | 6 | 20 | mA | VRXD = 0.4 V | 5 |
| SPLIT leakage current | /IL/ | 0 | 5 | µA | Standby mode: −22 V < VSPLIT < 35 V | 5 | |
| CANH dominant output voltage | V(CANH)(dom) | 3 | 3.6 | 4.25 | V | VTXD = 0 V | 5 |
| CANL dominant output voltage | V(CANL)(dom) | 0.5 | 1.4 | 1.75 | V | VTXD = 0 V | 5 |
| Dominant output voltage matching | VO(Dom)(m) | -100 | 0 | 150 | mV | 6 | |
| Differential bus output voltage, dominant | VO(dif)(bus) | 1.5 | 3 | V | VTXD = 0 V; dominant; 45 Ω < RL < 65 Ω | 6 | |
| Differential bus output voltage, recessive | VO(dif)(bus) | -50 | 50 | mV | VTXD = VCC; recessive; no load | 6 | |
| CANL recessive output voltage, normal mode | V(CANL)(reces) | 2 | 3 | V | Normal mode: VTXD = VCC; no load | 6 | |
| CANL recessive output voltage, standby mode | V(CANL)(reces) | -0.1 | 0 | 0.1 | V | Standby mode; no load | 6 |
| CANH short-circuit output current | IO(CANH)(sc) | -40 | -70 | -95 | mA | VTXD = 0 V; VCANH = 0 V | 6 |
| CANL short-circuit output current | IO(CANL)(sc) | 40 | 70 | 100 | mA | VTXD = 0 V; VCANL = 40 V | 6 |
| CANL recessive output current | IO(CANL)(reces) | -2.5 | 2.5 | mA | −27 V < VCAN < 32 V | 6 | |
| Differential receiver threshold voltage, normal mode | Vdif(th) | 0.5 | 0.7 | 0.9 | V | Normal mode; −12 V < VCANH < 12 V; −12 V < VCANL < 12 V | 6 |
| Differential receiver threshold voltage, standby mode | Vdif(th) | 0.5 | 0.7 | 1.15 | V | Standby mode | 6 |
| Differential receiver hysteresis voltage | Vdif(hys) | 50 | 70 | 100 | mV | Normal mode; −12 V < VCANH < 12 V; −12 V < VCANL < 12 V | 6 |
| Input leakage current | ILI | -5 | 0 | 5 | µA | VCC = 0 V; VCANH = VCANL = 5 V | 6 |
| Common-mode input impedance | Ri(cm) | 15 | 25 | 35 | kΩ | Normal/standby mode | 6 |
| Common-mode input impedance matching | Ri(cm)(m) | -3 | 0 | 3 | % | VCANH = VCANL | 6 |
| Differential input impedance | Ri(dif) | 25 | 50 | 75 | kΩ | Normal/standby mode | 6 |
| Common-mode input capacitance | Ci(cm) | 20 | pF | VTXD = VCC; not tested | 6 | ||
| Differential input capacitance | Ci(dif) | 10 | pF | VTXD = VCC; not tested | 6 | ||
| TXD to bus-active delay | td(TXD-BUSon) | 25 | 70 | 110 | ns | Normal mode | 6 |
| TXD to bus-inactive delay | td(TXD-BUSoff) | 10 | 50 | 95 | ns | 6 | |
| Bus-active to RXD delay | td(BUSon-RXD) | 15 | 65 | 115 | ns | 6 | |
| Bus-inactive to RXD delay | td(BUSoff-RXD) | 35 | 100 | 160 | ns | 6 | |
| TXD to RXD propagation delay | tPD(TXD-RXD) | 40 | 255 | ns | VSTB = 0 V | 7 | |
| TXD dominant timeout | tdom(TXD) | 300 | 600 | 1000 | µs | VTXD = 0 V | 7 |
| Dominant time for wake-up via bus | tBUS | 0.75 | 1.75 | 5 | µs | Standby mode | 7 |
| Standby-to-normal mode delay | td(stb-norm) | 5 | 7.5 | 10 | µs | Normal mode | 7 |
| Thermal shutdown junction temperature | Tj(sd) | 155 | 165 | 180 | ℃ | 7 | |
| Supply voltage VCC, no time limit | VCC | -0.3 | 6 | V | No time limit | 4 | |
| DC voltage on TXD pin | VTXD | -0.3 | V | 4 | |||
| DC voltage on RXD pin | VRXD | -0.3 | V | 4 | |||
| DC voltage on STB pin | VSTB | -0.3 | V | 4 | |||
| DC voltage on CANH pin | VCANH | -27 | 40 | V | 0 < VCC < 5.25 V; no time limit | 4 | |
| DC voltage on CANL pin | VCANL | -27 | 40 | V | 0 < VCC < 5.25 V; no time limit | 4 | |
| DC voltage on SPLIT pin | VSPLIT | -27 | 40 | V | 0 < VCC < 5.25 V; no time limit | 4 | |
| Transient voltage on CANL, CANH and SPLIT | VTRT | -200 | 200 | V | Per ISO 7637 | 4 | |
| ESD voltage, human body model, CANL/CANH/SPLIT | VESD | -6 | 6 | kV | Human body model; note 1 | 4 | |
| ESD voltage, human body model, other pins | VESD | -4 | 4 | kV | Human body model; note 1 | 4 | |
| ESD voltage, machine model | VESD | -200 | 200 | V | Machine model; note 2 | 4 | |
| Actual junction temperature | TVJ | -40 | 150 | ℃ | Note 3 | 4 | |
| Storage temperature | TSTG | -55 | 150 | ℃ | 4 | ||
| Lead temperature, soldering | TLEAD | 245 | ℃ | 10 s soldering | 4 | ||
| Supply voltage operating range | VCC | 4.75 | 5.25 | V | 4 |
CAD (KiCad official)
- Symbol:
PCA82C251M - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files:
pca82c251m-etched.step/pca82c251m-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);pca82c251m.step/pca82c251m.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: HGSEMI datasheet (11 pp, sha256
1792ded38b2966cc, retrieved 2026-10-17, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-sonnet-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).