The HI-6120 and HI-6121 provide a complete, integrated, 3V MIL-STD-1553 Remote Terminal in a monolithic silicon gate CMOS device. Two host interface options are offered: The HI-6120 uses a 16-bit parallel host bus interface for access to registers and RAM and is offered in a 100-pin plastic quad flat pack (PQFP). The HI-6121 has a 4-wire SPI (Serial Peripheral Interface) host connection and comes in a reduced pin count 52-pin PQFP or 64-pin QFN. Both devices handle all aspects of the MIL-STD- 1553 protocol, including message encoding, decoding, error detection, illegal command detection and data buffering. Host data management is simplified by storing message information and data within the on-chip 32K x 16 static RAM.



  • Fully integrated 3.3V Remote Terminal meets all requirements for MIL-STD-1553B Notice 2
  • Four data buffer methods for subaddress transmit and receive commands: indexed (single) buffering, pingpong (double) buffering and two circular buffer modes
  • Independently selectable data buffer modes for transmit and receive commands on each subaddress
  • Simplified mode code command handling
  • Integral 16-bit Time-Tag counter has programmable options for clock, interrupts and auto-synchronization
  • Message information and time-tag words are stored with message data words for all transacted messages
  • In compliance with MIL-STD-1553B Notice 2, received data from broadcast messages may be optionally separated from non-broadcast received data
  • Optional interrupt log buffer stores the most recent 16 interrupts to minimize host service duties
  • Optional illegal command detection uses internal table
  • Optional automatic self-initialization at reset
  • MIL-STD-1760 compliant


  • MIL-STD-1553 Terminals
  • Flight Control and Monitoring
  • ECCM Interfaces
  • Stores Management
  • Sensor Interfaces
  • Test Equipment
  • Instrumentation



ADK-6121: HI-6121 MIL-STD-1553 Remote Terminal Developer’s Kit

ADK-6121: HI-6121 MIL-STD-1553 Remote Terminal Developer’s Kit

The HI-6121 Remote Terminal Developer’s Kit is a reference design for a MIL-STD-1553B Remote Terminal with on-board bus interface transformers for connection to a MIL-STD-1553 bus.
More Information