Keysight / Agilent / HP E2272A Dual 8 x 1 Relay Multiplexer M-Module

The Keysight E2272A is a single-wide M-Module relay multiplexer featuring 16 independent latching DPST relays configured as two 8-to-1 multiplexers or, via jumper selection, a single 16-to-1 multiplexer. It performs independent two-wire signal routing to common destinations, making it ideal for automated test and data acquisition systems requiring flexible switching architectures. The module supports 8-bit register-based control, maskable interrupts on relay completion, and an 8-operation FIFO buffer for efficient multiplex management. With a 44-pin DSUB female connector and compliance to ANSI/VITA Std 12-1996, the E2272A integrates into VXI, VME, PCI, PXI, cPCI, and Ethernet carrier platforms.

Technical Specifications Relay Configuration

16 independent latching DPST relays

Dual 8 × 1 or single 16 × 1 multiplexer (jumper-selectable)

Switching time: 8 ms typical (close or open)

Relay life: 10⁵ operations at rated load (typical) Electrical Performance

Maximum voltage (terminal to terminal or chassis):

DC: 60 V / 200 V

AC RMS: 48 V / 125 V

AC Peak: 68 V / 175 V

Maximum current per switch: DC 2 A, AC peak 2 A

Maximum current per module: DC 8 A, AC peak 8 A

Maximum power per switch: DC 50 W, AC 50 VA

Maximum power per module: DC 200 W, AC 200 VA

Contact resistance: < 0.2 Ω

Thermal offset: 10 MHz typical

Crosstalk: < -64 dB (< 100 kHz), < -44 dB (< 1 MHz), < -24 dB (< 10 MHz)

Closed channel capacitance: < 20 pF Ch-Ch, < 40 pF Hi-Lo, < 75 pF Ch-chassis (typical) Control & Interface

8-bit data transfers

Maskable interrupts on relay completion

8-operation FIFO buffer

44-pin DSUB female connector Environmental & Power

Operating temperature: 0 °C to 55 °C

Storage temperature: -40 °C to 75 °C

Power: +5 V @ 0.2 A

Key Features

Flexible multiplexer topology selectable via jumper

Low contact resistance and thermal offset for precision measurements

High insulation resistance and bandwidth support for analog and RF signal routing

FIFO buffer reduces software overhead during continuous multiplex operations

Maskable interrupt capability enables polled or interrupt-driven relay management

Compatibility & Integration The E2272A conforms to ANSI/VITA Std 12-1996 single-wide M-Module specifications and operates with VXI, VME, PCI, PXI, cPCI, and Ethernet carriers, providing broad platform flexibility.