Conduction Cooled 8 Channel Isolated RS422 Serial Interface

  • Conduction cooled single-width 32 bit PMC module
  • 8 channels with programmable RS232 / RS422 / RS485 interfaces
  • channels are isolated from system and against each other
  • High performance asynchronous serial interface (up to 5.5296 Mbps)
  • Hardware handshake support available
  • Half-duplex mode available
  • 64 byte FIFO
  • P14 I/O

Product status: Active

Operating Temperature Range -40 °C to +85 °C RoHS compliant

The TPMC378 is a conduction cooled single-width 32 bit PMC module offering 8 channels of high performance RS422 asynchronous serial interface with P14 I/O. Each of the eight channels is isolated from the system and against each other by isolated transceivers with integrated DC/DC converters.

Each RS422 channel supports a four wire interface (RX+, RX-, TX+, TX-) plus ground (GND). Two channels additionally support flow control with RTS+/- and CTS+/-.

Each channel has 64 byte transmit and receive FIFOs to significantly reduce the overhead required to provide data to and get data from the transmitters and receivers. The FIFO trigger levels are programmable and the baud rate is individually programmable up to 5.5296 Mbps for RS422 channels. The UART offers readable FIFO levels.

All channels generate interrupts on PCI interrupt INTA. For fast interrupt source detection the UART provides a special Global Interrupt Source Register.

All serial channels use ESD protected transceivers. ESD protection is up to ±15KV.

The TPMC378 can operate with 3.3V and 5.0V PCI I/O signaling voltage.

Software Support (TDRV002-SW-xx) for different operating systems is available.

Mechanical Interface Conduction Cooled PCI Mezzanine Card (PMC) Interface
ANSI/VITA 20-2001 (R2005); Single Size
Electrical Interface PCI Rev. 2.3 compliant; 33 MHz / 32 bit PCI; 3.3V and 5V PCI Signaling Voltage
PCI Target Chip XR17D158 (Exar)
Transceiver ADM2582E (Analog Devices)
Interface Type Asynchronous serial interface
Number of Channels 8
Physical Interface RS422
Serial Channel I/O Signals TxD+/-, RxD+/-, GND (2 channels: RTS+/-, CTS+/-)
Termination 120ohms between RxD+ and RxD- of each channel (2 channels: also between CTS+, CTS-)
ESD Protection ±15kV Human Body Model
Programmable Baud Rates up to 5.5296 Mbps
I/O Interface PMC P14 I/O (64 pin Mezzanine Connector)
Power Requirements 180 mA typical @ +5V DC (no load)
650 mA typical @ +5V DC (with loopback: CH0 connected to CH1, CH2 connected to CH3, …)
Temperature Range Operating: -40°C to +85°C
Storage: -55°C to +125°C
MTBF 1 000 000 h
Weight 64 g
Humidity 5 – 95% non-condensing



8 Channel Serial RS422, Isolated

8 RS422 serial interface; isolated channels; 2 channels with hardware handshake; baudrates up to 5.5296 Mbps; Rear I/O; Conduction Cooled


PIM I/O Module with 50 pin Connector


Device Driver for Multiple Channel Serial Interface Family

Data Sheet

Data Sheet

Data Sheet - Issue 1.0.1

User Manual

User Manual - Issue 1.0.1