74VHC161284MEAX

Specialty Logic Overview

The Fairchild Semiconductor 74VHC161284MEAX is an advanced high-speed CMOS IEEE 1284 transceiver designed for parallel communications. It integrates eight bidirectional data buffers and eleven control/status buffers to implement a full compliant interface. The device supports Level 1 and Level 2 signaling standards, enabling bidirectional data transfer between personal computers and printing peripherals. It features translation capability for interfacing with 5V signals and includes power-up protection to prevent errors during initialization.

Specialty Logic Feature Summary

• Implements a full IEEE 1284 compliant interface using integrated bidirectional data and control buffers
• Supports IEEE 1284 Level 1 and Level 2 signaling standards for bidirectional parallel communications
• Provides translation capability allowing cable side outputs to interface with 5V signals
• Includes power-up protection to prevent errors when the peripheral is powered on without valid input signals

Specialty Logic Applications

• Extended Capabilities Port (ECP) mode implementation in printing systems
• Bidirectional parallel communication interfaces between personal computers and printing peripherals
• High-speed data transfer links requiring IEEE 1284 compliance

Specialty Logic Procurement Notes

Verify the complete part number including the MEAX suffix to ensure correct package and tape/reel configuration. Confirm that the specific revision matches the required IEEE 1284 standard support. Check datasheet specifications for voltage levels and pinout compatibility with the target host and peripheral circuits before procurement.

Specialty Logic Selection Notes

Select this component when a single-chip solution is required for IEEE 1284 compliance in bidirectional parallel ports. It replaces the function of two separate 74ACT1284 devices, reducing board space. Ensure the system operates within the specified voltage range and requires the flow-through pin configuration for easy Peripheral-to-Host connection.

Specialty Logic Part Context

This device belongs to the VHC series of advanced high-speed CMOS logic components fabricated with silicon gate technology. It is manufactured by Fairchild Semiconductor, now part of ON Semiconductor. The part is designed to replace older discrete buffer solutions, offering higher speed operation while maintaining low power dissipation typical of CMOS technology.

Specialty Logic Replacement Considerations

The datasheet indicates this device replaces the function of two 74ACT1284 devices. Verify pinout compatibility if substituting other IEEE 1284 transceivers. Ensure the replacement supports the same Level 1 and Level 2 signaling requirements.