74ACT1284MSAX

Overview

The Fairchild Semiconductor 74ACT1284MSAX is an IEEE STD 1284 compliant transceiver IC designed for bidirectional data transfer. It features a 7-bit architecture with tri-state outputs, operating within a supply voltage range of 4.5V to 5.5V. The device supports an extended industrial temperature range from -40°C to +85°C and is housed in a 20-SSOP package with a width of 5.30mm. This component facilitates high-speed parallel communication interfaces.

Feature Summary

• Complies with IEEE STD 1284 standards for parallel port communication
• Provides 7-bit bidirectional data transmission capability
• Features tri-state outputs for effective bus management

Applications

• Parallel printer interface circuits
• IEEE 1284 compatible peripheral connections
• Bidirectional data bus systems

Procurement Notes

This specific part number is obsolete and no longer manufactured by onsemi. Verification of current availability requires checking for end-of-life status or alternative distributors holding remaining stock. Engineers must confirm the discontinuation date and assess long-term supply risks before finalizing design specifications.

Selection Notes

Designers should evaluate equivalent active components due to the discontinued status of this part. Compatibility checks regarding pinout, electrical characteristics, and package dimensions are essential when selecting replacement logic families. Ensure that any substitute maintains IEEE 1284 compliance and operates within the required voltage and temperature parameters.

Part Context

The 74ACT1284 belongs to the 74ACT series of advanced CMOS logic devices. These components are characterized by TTL-compatible inputs and high-speed operation suitable for parallel data handling. The MSAX suffix indicates a specific tape-and-reel packaging format intended for automated surface-mount assembly processes.

Replacement Considerations

Texas Instruments SN74ACT1284DBR is documented as a similar alternative component.