UT63M143 3V 1553 Transceiver

Estimated lead time: 8 weeks for prototypes; 10 weeks for HiRel

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The monolithic UT63M143 Transceivers are complete transmitter and receiver pairs for +3-volt MIL-STD-1553A and 1553B applications. Encoder and decoder interfaces are idle low. 

The receiver section of the UT63M143 series accepts biphase-modulated Manchester II bipolar data from a MIL-STD-1553 data bus and produces TTL-level signal data at its RXOUT and RXOUT outputs. An external RXEN input enables the receiver outputs or disables them low. 

The transmitter section accepts biphase TTL-level signal data at its TXIN and TXIN and produces MIL-STD-1553 data signals. The transmitter’s output voltage is typically 7.1 VPP,LL. Activating the TXIHB input or setting both data inputs to the same logic level disables the transmitter outputs. 

The UT63M143 series offers complete transmitter and receiver pairs packaged in a dual-channel 36-pin DIP or 24-lead flatpack configurations designed for use in any MIL-STD-1553 application.



  • Radiation Hardened MIL-STD-1553 applications, such as satellite communication bus.
  • Transmitter and receiver pairs
  • Fully compliant RT validation
  • 3V system compatible with lower voltage FPGA


  • 3.3-volt only operation
  • Dual-cavity monolithic silicon technology
  • Fit and functionally compatible to industry standard transceiver
  • Idle low transmitter inputs and receiver outputs
  • Operating temperature range: -55°C to +125°C
  • Operational environment:
    • Total-dose tolerance: 300 krads and 1Mrad(Si)
    • SEL Immune to a LET of 111 MeV-cm2/mg
  • Packaging options:
    • 24-lead flatpack, dual-channel 50-mil center
    • 36-pin DIP, dual-channel 100-mil center
  • Standard Microcircuit Drawing (SMD): 5962-07242
    • QML Q and QML V compliant part

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