The 3.3V CMOS HI-6139 device is a member of Holt’s MIL-STD-1553 MAMBATM family and provides a complete single or multi-function interface between a host processor and MIL-STD-1553B bus (a register bit provides optional MIL-STD-1553A operation). Each IC contains a Bus Controller (BC), a Bus Monitor Terminal (MT) and a Remote Terminal (RT). Any combination of the contained 1553 functions can be enabed for concurrent operation. The enabled terminals communicate with the MIL-STD-1553 buses through a shared on-chip dual bus transceiver and external transformers. The user allocates 16K bytes of on-chip static RAM between devices to suit application requirements. 


The HI-6139 communicates with the host via a 40 MHz 4-wire serial peripheral interface (SPI). Programmable interrupts provide terminal status to the host processor. Circular data buffers in RAM have interrupts for rollover and programmable “level attained”. 


The HI-6139 can be configured for automatic self-initialization after reset. A dedicated SPI port reads data from an external serial EEPROM to fully configure registers and RAM and optionally start execution for any subset of one to three terminal devices.




  • Concurrent multi-terminal operation for one to three MIL-STD-1553B functions: BC, MT and/or RT 

  • Optional MIL-STD-1553A operation

  • Third Party RT Validated

  • 8K x 17-bit words internal static RAM with parity

  • Autonomous terminal operation requires minimal host intervention

  • 40 MHz SPI Host Interface

  •  MIL-STD-1760 option sets Busy bit in Status Word response during initialization

  • World’s smallest MIL-STD-1553 terminal, QFN package measures just 6mm x 6mm

  • Fully programmable Bus Controller with 28 op code instruction set

  • Simple Monitor Terminal (SMT) Mode records commands and data separately, with 16-bit or 48-bit time tagging

  • Independent 16-bit time tag counters and clock sources for all modes. The Bus Controller and Monitor also have 32- and 48-bit time count options, respectively

  • 64-Word Interrupt Log Buffer queues the most recent 32 interrupts. Hardware-assisted interrupt decoding quickly identifies interrupt sources

  • Built-in self-test for protocol logic, digital signal paths and internal RAM

  • Optional self-initialization at reset uses external serial EEPROM

  • ±8kV ESD Protection (HBM, all pins)

  • Two temperature ranges: -40°C to +85°C, or -55°C to +125°C with optional burn-in

  • RoHS compliant and Tin / Lead options available



  • MIL-STD-1553 Terminals

  • Flight Control and Monitoring

  • Stores Management

  • Sensor Interfaces

  • Test Equipment

  • Instrumentation


ADK-6139: MAMBA Family HI-6139 Application Development Kit For MIL-STD 1553A

ADK-6139: MAMBA Family HI-6139 Application Development Kit For MIL-STD 1553A

The Holt MAMBA Evaluation board demonstrates the broad feature set of Holt’s MIL-STD-1553A MAMBA HI-6139 which includes a BC, RT and MT in a single device similar to Holt's well known MIL-STD-1553B HI-6138. The MAMBA HI-6139 supports both MIL-STD-1553B and MIL-STD-1553A bus communication, containing protocol management and physical bus interface circuitry. This 2-board assembly and C project reference design provides a ready-to-run evaluation platform demonstrating concurrent operation for any combination of Bus Controller, Bus Monitor and Remote Terminal. For convenience, this kit includes IAR Systems Embedded Workbench® for ARM, and a fully integrated debug interface for the ARM Cortex M3 microcontroller.
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