74LCX244FT

Overview

The 74LCX244FT is a low-voltage octal bus buffer manufactured by Toshiba Semiconductor and Storage. It operates within a supply voltage range of 1.65 V to 3.6 V and features 5-V tolerant inputs and outputs. The device provides high-speed operation with a maximum propagation delay of 6.5 ns at 3.0 V to 3.6 V. It delivers a minimum output current of 24 mA at 3.0 V. Packaged in a 20-TSSOP format, it supports an operating temperature range from -40°C to 85°C.

Feature Summary

• Non-inverting 3-state buffer design with two active-low output enables
• Power-down protection provided on all inputs and outputs
• Pin and function compatible with the 74 series (74LVC/ALVC) 244 type

Applications

• 3-state memory address drivers
• 3.3-V system interfacing
• Interface to 5 V supply environments for inputs and outputs

Procurement Notes

Verify the specific ordering suffix matches the required packaging configuration, such as tape and reel or cut tape, as indicated by distributor part numbers. Confirm RoHS compliance status and moisture sensitivity level requirements against project specifications before finalizing procurement orders.

Selection Notes

Select this component when designing low-voltage systems requiring octal buffering with 5-V tolerance capabilities. Ensure the application environment stays within the specified -40°C to 85°C operating temperature range. Verify that input signals do not exceed absolute maximum ratings during power-up or power-down sequences.

Part Context

This device belongs to the 74LCX family of CMOS digital integrated circuits. It is designed for high-speed operation while maintaining low power dissipation typical of CMOS technology. The product was commercially produced starting in October 2013 and serves as a direct replacement for older 74-series logic buffers in modern low-voltage designs.

Replacement Considerations

The datasheet confirms pin and function compatibility with the 74 series 244 type, including 74LVC and ALVC variants. No other specific substitute part numbers are explicitly listed in the provided documentation.