74LCX16245MEAX

Overview

The Fairchild Semiconductor 74LCX16245MEAX is a low-voltage 16-bit bidirectional transceiver featuring five-volt tolerant inputs and outputs. It integrates pull-down resistors on all data lines to ensure defined states during power-up or high-impedance conditions. The device operates within a supply voltage range of 2.0 V to 3.6 V, supporting LVTTL and TTL input levels while driving LVCMOS outputs. Key electrical specifications include a maximum propagation delay of 5.2 ns at 50 pF load, with output drive capabilities of ±24 mA. It utilizes a 48-pin TSSOP package.

Feature Summary

• Integrates pull-down resistors on all data lines for defined logic states
• Provides five-volt tolerant inputs and outputs for mixed-voltage interfacing
• Supports bidirectional data transfer between bus-oriented systems

Applications

• Bus-oriented memory and disk drive controllers
• High-density data acquisition systems
• Consumer products requiring low-voltage logic translation

Procurement Notes

Verify the specific suffix 'MEAX' against the manufacturer's current datasheet to confirm pinout compatibility and package dimensions. Ensure the procurement source provides RoHS compliance documentation. Cross-reference the ordering code with official Fairchild (now ON Semiconductor) catalogs to avoid obsolete stock variations.

Selection Notes

Select this component when designing systems requiring 16-bit bidirectional data paths with mixed 5V and low-voltage logic domains. The integrated pull-down resistors simplify circuit design by eliminating external components for state definition. Verify that the system operating voltage remains within the 2.0 V to 3.6 V range to ensure proper functionality and signal integrity.

Part Context

This part belongs to the 74LCX family of advanced CMOS logic devices, designed for high-speed operation with low power dissipation. The LCX series is optimized for applications requiring fast switching speeds and wide operating voltage ranges. The 16245 variant specifically addresses the need for large-width bidirectional buses in portable and battery-powered electronics.

Replacement Considerations

The 74LCX16245MTDX is a documented alternative from the same manufacturer offering identical logical functionality. Verify package compatibility and lead configuration before substitution.