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.



Various software support options are available for the HI-6139. A development kit (ADK-6139) includes low level software that demonstrates the broad features of the device. In addition, Linux and Bare Metal (ARM) Software Drivers are available. Details are outlined below. 

Note: API version supports only MIL-STD-1553B mode of operation. 





  • MIL-STD-1553A/B/C and MIL-STD-1760 compliant

  • Complies with SAE AS15531A and STANAG 3838

  • 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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