World's Smallest MIL-STD-1553 Remote Terminal Solution

Wednesday, November 18, 2009

Mission Viejo, CA (September 14, 2009) – Holt Integrated Circuits, a world leader in data bus IC’s for the avionics and military industries, expanded its portfolio of MIL-STD-1553 products by announcing the release of HI-6120 and HI-6121, the world’s smallest Remote Terminal solutions.  These devices provide a single-chip, 3.3V MIL-STD-1553 Remote Terminal solution, including dual transceivers, in compact surface-mount plastic packages. 

The HI-6120 uses a 16-bit parallel host bus interface in a 100-pin PQFP package.  The HI-6121 uses a 4-wire Serial Peripheral host Interface (SPI) and comes in a 52-pin PQFP or 64-pin QFN.  The 64-pin QFN is the world’s smallest remote terminal solution, at only 9mm x 9mm x 1mm.  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-bit static RAM.

“Holts unique single-chip approach offers customers a less expensive, more reliable and compact solution with faster lead-times than existing multi-chip module solutions on the market today,” said Anthony Murray, Director of Business Development at Holt.  “The devices can operate with minimum host intervention, offering the user maximum flexibility with a multitude of programmable features”.

Key features include fully programmable memory management with up to four data buffering modes, internal illegalization capability for subaddress, command T/R bit, broadcast vs non-broadcast and word count or mode code (4096 combinations), simplified mode command handling, programmable interrupts with 16-interrupt log buffer, optional illegal command detection and optional broadcast command recognition.

The HI-6120 and HI-6121 can also be configured for automatic self-initialization, further minimizing external host interaction.  A dedicated SPI port reads data from an external serial EEPROM memory to fully configure the internal RAM, illegalization table and host interrupts. 

The devices are offered with industrial -40oC to + 85oC, or extended, -55oC to + 125oC temperature ranges.  Optional burn-in is available on the extended temperature range.  “RoHS compliant” lead-free options are also offered.  Datasheet, samples and evaluation kits for both devices, along with supporting software, are currently available on request. 

Readers interested in learning more about Holt’s range of ARINC 429 or MIL‑STD‑1553 products should contact Holt at (949) 859-8800, by e-mail at, or by visiting the Holt Web site at

About Holt Integrated Circuits

Located in Mission Viejo, CA, Holt Integrated Circuits is a major supplier of ICs for avionics and military data bus and display applications.  The company’s products are specified by more than 400 manufacturers worldwide and are employed in flight control, navigation, engine management, communications, safety equipment, and in-flight information systems.

Holt’s range of ICs supporting the ARINC 429 standard is the widest in the industry, and its display drivers offer high-voltage operation as well as innovative design features to enhance ease of use and testability.  Holt’s transceivers for MIL-STD-1553 applications are recognized as the industry’s smallest and have the lowest power consumption.  In addition, Holt also offers MIL-STD-1553 protocol ICs, Manchester encoder/decoders and interface transformers.  Select products are available to DSCC SMD specifications.  Holt also offers product compliant to the European Union "RoHS Directive 002/95/EC".

Holt Integrated Circuits is ISO 9001:2000 registered and is a STACK certified supplier.