New COTS MIL-STD-1553 Dual Core Stacked Transformer Provides Board Designers with Small Footprint Alternative to Costly Competitive Products

Tuesday, July 29, 2003

Mission Viejo, CA (July 29, 2003) - Holt Integrated Circuits announced today the release of their new family of COTS MIL-STD-1553 interface transformers. As part of an alliance with Premier Magnetics, the PM-DB2740x, a family of dual core stacked transformers, is added to Holt’s MIL-STD-1553 product offerings, providing board designers with small footprint, cost effective, high quality alternatives to similar products on the market today.

Interface transformers are required in all MIL-STD-1553 data bus installations to couple the transceiver to the data bus. To address this requirement, where board space is a premium, the PM-DB2740x family places two transformers in a single, vertically stacked, small footprint configuration measuring only 0.625” x 0.625”.

The PM-DB2740x is available in a variety of models to provide a selection of turns ratios to meet most MIL-STD-1553 designers’ needs, and in many cases can be used as a COTS drop-in replacement for selected legacy transformers. Like all MIL-STD-1553 interface transformers offered by Holt, the transformers that are part of the PM-DB2740x family have an operating temperature range of -55°C to +125°C.

“With the PM-DB2740x release, Holt continues to build upon its commitment to provide its customers who design to meet today’s stringent high-reliability military avionics and stores requirements with high quality, small footprint alternatives” stated Sandy Edberg, Sales Director at Holt Integrated Circuits. “Our future in the MIL-STD-1553 market is exciting with continued new and innovative product offerings scheduled for release later this year.”

Along with the PM-DB2740x family, interface transformers with over sixty available package and turns ratio configurations are manufactured by Premier Magnetics and offered by Holt. These COTS (non-QPL) transformers are fully compatible with Holt’s complete line of MIL-STD-1553 data bus interface products.

Additional information, including Data Sheet, for Holt offered MIL-STD-1553 interface transformers is available at Readers interested in learning more about Holt Integrated Circuits or any of Holt’s 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 250 manufacturers and are employed in flight control, navigation, engine management, communications, safety equipment, and in-flight information systems worldwide. 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. Holt Integrated Circuits is a certified ISO 9001:2000 supplier, and many of its products are also available to DSCC SMD specifications.

About Premier Magnetics

Established in 1991 and located in Lake Forest, CA, is a leading designer and manufacturer of transformers and magnetic components. Premier products range from military to medical, telecommunications, networking and power applications.