Avionics Digital Edition

Holt Integrated Circuits Inc.

Holt Integrated Circuits, an AS9100C and ISO 9001:2008 registered company, has provided analog and mixed signal IC data bus solutions to the avionics industry for over 40 years, in applications such as flight control, navigation, engine management, communications, safety and in-flight entertainment systems.

The Leader in Avionics Data Bus ICs

Holt Integrated Circuits, an AS9100C and ISO 9001:2008 registered company, has provided analog and mixed signal IC data bus solutions to the avionics industry for over 40 years, in applications such as flight control, navigation, engine management, communications, safety and in-flight entertainment systems. Product lines include ARINC 429, MIL-STD-1553, ARINC 717, ARINC 825 (CAN), RS- 485/422, discrete-to-digital sensors and analog switches. Holt ICs are known for providing the highest levels of integration, resulting in the most reliable and cost effective solutions, enabling customers to reduce size, weight and power (SWaP) in their designs. Examples include compact Serial Peripheral host Interfaces (SPI), single supply operation, digital protocol and analog transceiver functions on the same IC, and on-chip lightning protection.

Select products are outlined below:

ARINC 429 Data Bus:

• HI-3210: Data Management IC supporting 8 receive and 4 transmit buses with 32K x 8-bit RAM.

• HI-8597: 3.3V single supply line driver with world’s only on-chip Level 3 lightning protection.

• HI-8450/4/8: Single/Quad/Octal line receivers with on-chip Level 3 lightning protection.

• HI-8500: Line driver family with an option of tri-state high impedance outputs while the device is powered ON or OFF.

• HI-3593: Dual Receiver, Single Transmitter with integrated line receivers/line driver.

ARINC 717:

• HI-3717: ARINC 717 protocol IC including HBP and BPRZ channels with integrated line drivers and line receivers

Discrete-to-Digital (GND/Open and Supply/Open) Sensors:

• HI-8429: Octal discrete sensing device with individually con gurable channels, SPI interface, sensor output interrupt pin and on-chip lightning protection.

• HI-8425/26: Lightning protected octal discrete sensing device with quad low-side drivers.

• HI-8430/31: Lightning protected octal discrete sensing device with quad high-side drivers.

RS-485/422:

• HI-4850 family: Full or half duplex with controlled slew rate operation up to 20MHz.