component
SIT82C251T
Public Made by Adomby adom
SIT CAN Transceivers, SOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
Generated by kicad-footprint-generator · KiCad file format 20260206
| Name | Last updated |
|---|---|
| docs | 16d ago |
| viewers | 16d ago |
| package.json | 16d ago |
| page.json | 16d ago |
| README.md | 16d ago |
| sit82c251t-etched.glb | 16d ago |
| sit82c251t-etched.step | 16d ago |
| sit82c251t-hero.glb | 16d ago |
| sit82c251t-hero.overlay.json | 16d ago |
| sit82c251t.glb | 16d ago |
| sit82c251t.kicad_mod | 16d ago |
| sit82c251t.kicad_sym | 16d ago |
| sit82c251t.lbr | 16d ago |
| sit82c251t.step | 16d ago |
SIT82C251T
SIT · CAN Transceivers · SOP-8
SIT82C251T from SIT, 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 from the CAN protocol controller; logic-high input must be between 2 V and VCC+0.3 V and logic-low between -0.3 V and 0.8 V. |
| 2 | GND | power_in | Ground supply and voltage reference point for all device voltages. |
| 3 | VCC | power_in | Supply voltage of 4.5 V to 5.5 V for normal operation (absolute maximum -0.3 V to +7 V). |
| 4 | RXD | output | Receive data output that reads out the bus state, going low for dominant and high for recessive bus states. |
| 5 | VREF | power_out | Common-mode stabilization (reference) voltage output, specified at 0.3VCC to 0.7VCC for load currents between -500 µA and 500 µA. |
| 6 | CANL | bidirectional | LOW-level CAN bus line, rated for bus terminal voltages from -40 V to +40 V. |
| 7 | CANH | bidirectional | HIGH-level CAN bus line, rated for bus terminal voltages from -40 V to +40 V. |
| 8 | Rs | input | Standby mode control input: grounding Rs selects high-speed mode, while high or open selects low-power standby mode; the MCU-side port limit is -0.3 V to VCC+0.3 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | SIT |
| 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 |
|---|---|---|---|---|---|---|---|
| Supply voltage | Vcc | 4.5 | 5.5 | V | 1 | ||
| Supply current Standby | Icc | 10 | uA | 1 | |||
| Maximum transmission rate | 1/tbit | 1 | Mbaud | Non-return to zero code | 1 | ||
| DC voltage on pin CANH and CANL | Vcan | -40 | 40 | V | 1 | ||
| Bus differential voltage | Vdiff | 1.5 | 3 | V | 1 | ||
| Virtual junction temperature | Tamb | -40 | 125 | ℃ | 1 | ||
| Supply voltage | VCC | -0.3 | 7 | V | 2 | ||
| MCU side port TXD, RXD, VREF, Rs | -0.3 | V | 2 | ||||
| Voltage range at any bus terminal | -40 | 40 | V | 2 | |||
| Transient voltage on pins CANH, CANL | Vtr | -200 | 200 | V | see Fig 7 | 2 | |
| Storage temperature | Tstg | -55 | 150 | ℃ | 2 | ||
| Virtual junction temperature | Tj | -40 | 150 | ℃ | 2 | ||
| Continuous power consumption | 400 | mW | SOP8 | 2 | |||
| CANH dominant output voltage | VOH(D) | 2.9 | 3.4 | 4.5 | V | VI=0V, Rs=0V, RL=60Ω, Fig 1, Fig 2 | 3 |
| CANL dominant output voltage | VOL(D) | 0.8 | 1.5 | V | 3 | ||
| Bus recessive output voltage | VO(R) | 2 | 2.5 | 3 | V | VI=3V, Rs=0V, RL=60Ω, Fig 1, Fig 2 | 3 |
| Bus dominant differential output voltage | VOD(D) | 1.5 | 3 | V | VI=0V, Rs=0V, RL=60Ω, Fig 1, Fig 2 | 3 | |
| Bus recessive differential output voltage | VOD(R) | -0.012 | 0.012 | V | VI=3V, Rs=0V, Fig 1, Fig 2 | 3 | |
| Bus recessive differential output voltage (no load) | VOD(R) | -0.5 | 0.05 | V | VI=3V, Rs=0V, NO LOAD | 3 | |
| Transmitter dominant voltage symmetry | Vdom(TX)sym | -400 | 400 | mV | Vdom(TX)sym=VCC- VCANH - VCANL | 3 | |
| Common-mode output voltage | VOC | 2 | 2.5 | 3 | V | Rs=0V, Fig 8 | 3 |
| Peak-to-peak Common-mode output voltage | VOC | 30 | mV | 3 | |||
| Short-circuit output current (CANH=-12V, CANL=open) | IOS | -105 | -72 | mA | CANH=-12V, CANL=open, Fig 10 | 3 | |
| Short-circuit output current (CANH=12V, CANL=open) | IOS | 0.36 | 1 | mA | CANH=12V, CANL=open, Fig 10 | 3 | |
| Short-circuit output current (CANL=-12V, CANH=open) | IOS | -1 | 0.5 | mA | CANL=-12V, CANH=open, Fig 10 | 3 | |
| Short-circuit output current (CANL=12V, CANH=open) | IOS | 71 | 105 | mA | CANL=12V, CANH=open, Fig 10 | 3 | |
| Recessive output current | IO(R) | -2 | 2.5 | mA | -27V<CANH<32V, 0<VCC<5.25V | 3 | |
| Propagation delay time, low-to-high-level output (driver) | tPLH | 25 | 65 | 120 | ns | Rs=0V, Fig 4 | 4 |
| Propagation delay time, high-to-low-level output (driver) | tPHL | 25 | 45 | 90 | ns | 4 | |
| Differential output signal rise time | tr | 25 | ns | 4 | |||
| Differential output signal fall time | tf | 50 | ns | 4 | |||
| Enable time from standby mode to dominant | tEN | 10 | μs | Fig 7 | 4 | ||
| Bus wake-up filter time | tBUS | 0.7 | 5 | μs | 4 | ||
| Positive-going input threshold voltage | VIT+ | 800 | 900 | mV | Rs=0V, Fig 5 | 4 | |
| Negative-going input threshold voltage | VIT- | 500 | 650 | mV | 4 | ||
| Hysteresis voltage (VIT+, VIT-) | VHYS | 100 | 125 | mV | 4 | ||
| High-level output voltage (receiver) | VOH | 4 | 4.6 | V | IO=-2mA, Fig 6 | 4 | |
| Low-level output voltage (receiver) | VOL | 0.2 | 0.4 | V | IO=2mA, Fig 6 | 4 | |
| Power-off bus input current | I(OFF) | 5 | μA | CANH or CANL=5V, Other pin=0V | 4 | ||
| Input capacitance to ground (CANH or CANL) | CI | 13 | pF | 4 | |||
| Differential input capacitance | CID | 5 | pF | 4 | |||
| Input resistance (CANH or CANL) | RIN | 15 | 30 | 40 | kΩ | TXD=3V, Rs=0V | 4 |
| Differential input resistance | RID | 30 | 80 | kΩ | 5 | ||
| Input resistance matching | RImatch | -3 | 3 | % | CANH=CANL | 5 | |
| The range of common-mode voltage | VCOM | -12 | 12 | V | 5 | ||
| Propagation delay time, low-to-high-level output (receiver) | tPLH | 60 | 100 | 130 | ns | Rs=0V or VCC, Fig 6 | 5 |
| Propagation delay time, high-to-low-level output (receiver) | tPHL | 45 | 70 | 90 | ns | 5 | |
| RXD signal rise time | tr | 8 | ns | 5 | |||
| RXD signal fall time | tf | 8 | ns | 5 | |||
| Loop delay 1, driver input to receiver output, Recessive to Dominant | td(LOOP1) | 90 | 190 | ns | Rs=0V, Fig 9 | 5 | |
| Loop delay 2, driver input to receiver output, Dominant to Recessive | td(LOOP2) | 90 | 190 | ns | 5 | ||
| Standby supply current | ICC | 5 | 12 | μA | Rs=VCC, VI=VCC | 6 | |
| Supply current, Dominant | ICC | 50 | 70 | mA | VI=0V, Rs=0V, LOAD=60Ω | 6 | |
| Supply current, Recessive | ICC | 6 | 10 | mA | VI=VCC, Rs=0V, NO LOAD | 6 | |
| HIGH-level input current | IIH(TXD) | -2 | 2 | μA | VI=VCC | 6 | |
| LOW-level input current | IIL(TXD) | -50 | -10 | μA | VI=0 | 6 | |
| HIGH-level input voltage | VIH | 2 | V | 6 | |||
| LOW-level input voltage | VIL | -0.3 | 0.8 | V | 6 | ||
| Leakage current | IO(Rs) | -5 | 5 | μA | Rs=2V, -12V<VO<12V | 6 | |
| CAN bus pin human body discharge model (HBM) | VESD_HBM | -8 | 8 | kV | 6 |
CAD (KiCad official)
- Symbol:
SIT82C251T - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files:
sit82c251t-etched.step/sit82c251t-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sit82c251t.step/sit82c251t.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: SIT datasheet (16 pp, sha256
e2c6771ee683400b, retrieved 2026-10-17, tier: lcsc) - 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).