HI-1579PST

The HI-1579PST from Holt Integrated Circuits is a single-chip, dual 3.3V transceiver designed for use with the MIL-STD-1553 and MIL-STD-1760 data buses. These are high-reliability, serial data bus standards primarily used in avionics and military applications. Here's a detailed breakdown of the HI-1579PST's features and functionalities:

Technical Specifications:

• Function: Dual transceiver (transmitter and receiver)
• Voltage: 3.3V single supply
• Data Rate: Up to 20 Mbps
• Interface: Manchester II bi-phase data
• Bus Standard: MIL-STD-1553 / 1760
• Package: 20-pin plastic ESOIC (Enhanced Small Outline Integrated Circuit)
• Temperature Range: -55°C to +125°C
• Power Consumption: Typical 500 mW per channel

Functionality:

• Translates between digital TTL/CMOS data and differential voltage signals suitable for driving the bus transformer.
• Supports both transmission and reception of data on the bus.
• Provides isolated drivers and receivers for enhanced electrical noise immunity.
• Operates with low power consumption, making it ideal for battery-powered or space-constrained applications.
• Features separate transmitter inhibit control signals for individual channels.
• Offers trapezoidal output waveform for improved signal integrity.

Additional Features:

• RoHS Compliant: Meets environmental regulations for lead and other hazardous materials.
• Moisture Sensitivity Level 1: Relatively insensitive to moisture, simplifying handling and storage.
• High Reliability: Designed for harsh environments and long-term operation.

Applications:

• Flight management systems
• Engine control systems
• Navigation and communication equipment
• Military instrumentation
• Any application requiring reliable data transmission on MIL-STD-1553 / 1760 buses

Considerations:

• The HI-1579PST is a discontinued product, although some distributors may still have stock available.
• For newer designs, consider alternative transceiver options from Holt or other manufacturers that offer improved features or support newer bus standards.