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PCA82C250 / A82C250 / 82C250 SOP-8 CAN Bus Transceiver IC 5V
PCA82C250 / A82C250 / 82C250 SOP-8 CAN Bus Transceiver IC 5V
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PCA82C250 / A82C250 / 82C250 — SOP-8 CAN Bus Transceiver IC
The PCA82C250 is a high-speed CAN (Controller Area Network) bus transceiver compliant with ISO 11898, designed to interface between a CAN controller and the physical CAN bus. Supports data rates up to 1 Mbps and is widely used in automotive OBD systems, industrial automation, and embedded CAN networks. Available in SOP-8 SMD package.
Key Specifications
| Parameter | Value |
|---|---|
| Part Numbers | PCA82C250 / A82C250 / 82C250 |
| Package | SOP-8 |
| Supply Voltage (Vcc) | 4.5V – 5.5V |
| CAN Bus Standard | ISO 11898 (high-speed CAN) |
| Max Data Rate | 1 Mbps |
| Bus Nodes | Up to 110 nodes |
| Bus Voltage Range | -8V to +18V (fault tolerant) |
| Standby Current | <170μA (standby mode) |
| ESD Protection | ±2kV (HBM) on bus pins |
| Operating Temperature | -40°C to +125°C |
Why Choose PCA82C250?
- ✅ ISO 11898 compliant — guaranteed interoperability with all CAN controllers
- ✅ 1 Mbps data rate — supports full-speed CAN FD-compatible networks
- ✅ 110-node bus — large network capacity for industrial applications
- ✅ Fault-tolerant bus pins — withstands -8V to +18V bus faults
- ✅ Low standby current — <170μA for battery-powered automotive ECUs
Compatible With / Works With
- MCP2515 SPI CAN controller (Arduino CAN bus shield)
- STM32 bxCAN peripheral (F103, F407, F446 series)
- ESP32 TWAI (Two-Wire Automotive Interface) peripheral
- NXP SJA1000 standalone CAN controller
- OBD-II diagnostic interfaces (ISO 15765-4 CAN)
- CANopen and DeviceNet industrial networks
Typical Applications
- Arduino CAN Bus — MCP2515 + PCA82C250 for OBD-II vehicle data logging
- STM32 CAN Network — bxCAN peripheral with PCA82C250 transceiver for industrial automation
- Automotive ECU — body control module, ABS, and engine management CAN interface
- Industrial CANopen — sensor/actuator nodes on factory automation networks
- OBD-II Adapter — vehicle diagnostic tool CAN physical layer
FAQ
Q: What is the difference between PCA82C250 and TJA1050?
A: Both are ISO 11898 CAN transceivers with identical pinout and 1Mbps capability. TJA1050 has improved EMC performance and is the preferred choice for new designs. PCA82C250 is the classic original, widely used in existing automotive and industrial equipment.
Q: Can PCA82C250 work with 3.3V microcontrollers?
A: The IC requires 5V Vcc, but the TXD/RXD logic pins are 3.3V-compatible (VIH min = 2.0V). Use a 5V supply for the IC and connect TXD/RXD directly to 3.3V MCU GPIO without level shifting.
Q: Do I need termination resistors on the CAN bus?
A: Yes. ISO 11898 requires 120Ω termination at each end of the bus. For a 2-node bench setup, add one 120Ω resistor between CANH and CANL at each node.
Package Contents
- PCA82C250 / A82C250 / 82C250 SOP-8 CAN Bus Transceiver IC (quantity per variant selected)
