4 Channel Programmable RS232/RS422/RS485 Serial Interface

  • Standard single-width 32 bit PMC module
  • 4 channels with programmable RS232 / RS422 / RS485 interfaces
  • High performance asynchronous serial interface (up to 5.5296 Mbps)
  • Hardware handshake support available
  • Half-duplex mode available
  • 64 byte FIFO
  • Front panel I/O (HD50 SCSI-2 type connector) and P14 I/O

Product status: Active

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

The TPMC466 is a standard single-width 32 bit PMC module and offers 4 channels of high performance RS232/RS422/RS485 programmable asynchronous serial interface. The module offers front panel I/O with a HD50 SCSI-2 type connector and P14 I/O.

The serial channels can be individually programmed to operate as RS232, RS422 or RS485 full duplex/half duplex interface. In addition programmable termination is provided for the RS422/RS485 interfaces. After power-up all serial I/O lines are in a high impedance state.

Each RS232 channel supports RxD, TxD, RTS, CTS and GND. RS422 and RS485 full duplex support a four wire interface (RX+, RX-, TX+, TX-) plus ground (GND). RS485 half duplex supports a two wire interface (DX+, DX-) plus ground (GND).

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 921.6 kbps for RS232 channels and 5.5296 Mbps for RS422/RS485 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 TPMC466 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 PCI Mezzanine Card (PMC) Interface
Single Size
Electrical Interface PCI Rev. 2.3 compliant; 33 MHz / 32 bit PCI; 3.3V and 5V PCI Signaling Voltage
PCI Target Chip XR17D154 (Exar)
Quad UART XR17D154 (Exar)
Transceiver MAX3161E
Interface Type Asynchronous serial interface
Number of Channels 4
Physical Interface Software selectable RS232, RS422, RS485 full duplex, RS485 half duplex
Serial Channel I/O Signals RS232: TxD, RxD, RTS, CTS, GND
RS422/RS485 Full Duplex: TxD+/-, RxD+/-, GND
RS485 Half Duplex: Dx+/-, GND
Termination Software selectable 120ohms
ESD Protection ±15kVHuman Body Model
Programmable Baud Rates RS232: up to 921.6 kbps
RS485: up to 5.5296 Mbps
I/O Interface HD50 SCSI-2 type connector (e.g. AMP# 787395-5)
PMC P14 I/O (64 pin Mezzanine Connector)
Power Requirements 40 mA typical @ +5V DC (Shutdown, no load)
45 mA typical @ +5V DC (RS232, no load)
75 mA typical @ +5V DC (RS422, no load)
235 mA typical @ +5V DC (RS485 FD Master, no load)
210 mA typical @ +5V DC (RS485 HD, no load)
25 mA typical @ +3.3V DC (no load)
Temperature Range Operating: -40°C to +85°C
Storage: -40°C to +100°C
MTBF 620 000 h
Weight 67 g
Humidity 5 – 95% non-condensing



4 Channel Programmable RS232/RS422/RS485

4 programmable RS232/RS422/RS485 serial interfaces; RS232 supports hardware handshake; RS485 half-duplex support; baudrates up to 5.5296 Mbps (921.6 kbps for RS232); Front I/O via HD50 / SCSI-2 connector; Rear I/O


HD50 / SCSI-2 Cable

HD50 / SCSI-2 Terminal Block

Cable Kit for Modules with HD50 / SCSI-2 Connector

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 1.0.4