3 Relay

BBG-Relay Stackable Eight Channel Multiplexer

The BBG-RELAY is designed to connect directly to the BBG-4000 Dual Universal Conversion Engine (DUCE) providing interfaces to synchro, resolver, and NEMA-0183 message formats using RS-232, RS-422, RS-423, RS-485, or MIL-STD-188C protocols.

The BBG-RELAY Eight Channel Multiplexer provides multiplexing capability of six analog or digital inputs or outputs. These 4 inch x 5 inch modules provide an eight-to-one or one-to-eight multiplex or connect together to provide a sixteen-to-two or two-to-sixteen multiplex. Multiplexing is controlled by one digital switch or parallel port.  Applications include analog and digital multiplexing in switching networks or data acquisition systems.


  • Eight-to-one or one-to-eight multiplex of six data lines
  • Stackable to provide eight-to-one or one-to-eight multiplex of twelve data lines
  • Digital switch or parallel port control
  • 60 watt or 125 VA
  • 2 amp at 30 VDC load
  • 1 amp at 120 VAC load

Resistive Load Ratings:

  • Max switched power: 60 W or 125 VA
  • Max switched current: 2 A
  • Max switched voltage: 150 VDC or 300 VAC
  • Max carry current: 3 A

Card Layout:

Technical Specification
Parameter Value Units
Power Input 5 Volts
250 Milliamps
Temperature Range
Operating Temperature 0 to +50 °C
Storage Temperature -65 to +150 °C
Resistive Load Rating
Max Switch Power 60 Watts
125 Volt Amps
Max Switched Current 2 Amps
Max Switched Voltage 150 Volts DC
300 Volts AC
Max Carry Current 3 Amps
Digital Control
V(IH) Min 2 Volts
V(IL) Max 0.8 Volts
I(IH) 120 Micro Amps
I(IL) -4.8 Milliamps
Physical Characteristics
4 x 5 x 1.2 Inches
10.2 x 12.7 x 3 Centimeters