The RAA7884QT is a ±16.5kV IEC 61000-4-2 ESD protected, 3.0V to 5.5V powered, quad transmitter designed for balanced communication using the RS-422 standard. With low output leakage currents (±10µA), the driver presents a low load to the RS-422 bus.

The driver (Tx) outputs are tri-statable and incorporate a hot plug feature to keep them disabled during power-up and power-down. The RAA7884QT has a common EN/EN.

Basic Information
Production StatusMass Production
Key FeatureHigh Speed
# of Rx4
Devices Allowed on Bus256
Half/Full DuplexN/A
High ESD ProtectionYes - IEC 61000-4-2
Hot PlugYes
Data Rate50Mbps
Supply Voltage Vcc (Min)3V
Supply Voltage Vcc (Max)5.5V
Slew Rate LimitedNo
Tx/Rx EnableYes - Group Enables
IS Enabled/Disabled800µA
VL PinNo
Qualification LevelStandard
Supply Voltage Vcc Range3.0V to 5.5V
Can SampleYes
Temperature Range-40 °C to +125 °C
Orderable Part NameProduct Longevity Program (PLP)Production Status1000 Piece Budgetary Price For MLQ, please inquireMinimum Order QuantityPackage InfoDistributorsRequest SamplesBuy Direct
RAA7884QT4GSP#HB0-Mass ProductionCall2500-0-Buy
RAA7884QT4GSP#AB0-Mass ProductionCall1920--Buy


  • IEC 61000 ESD protection on RS-422 outputs: ±16.5kV
    • Class 3 ESD level on all other pins: 12kV HBM
    • High machine model ESD level on all pins: 700V
  • Wide supply range: 3.0V to 5.5V
  • Specified for +125 °C operation
  • Available in industry-standard pinout
  • Hot plug Tx outputs remain tri-stated during power-up and power-down
  • Low Tx leakage allows > 256 devices on the bus
  • High data rate of 50Mbps minimum
  • Low quiescent supply current: 0.8mA (maximum)
    • Low shutdown supply current: 60µA
  • Current limiting and thermal shutdown for driver overload protection
  • Tri-statable Tx outputs
  • 5V tolerant logic inputs when VCC = 3.3V
  • Pb-free (RoHS compliant)




  • Telecom equipment
  • Motor controllers/encoders
  • Programmable logic controllers
  • Industrial/process control networks


Design & Development