TC74VHC244F(EL,K,F

Overview

The TC74VHC244F(EL,K,F) is an octal bus buffer manufactured by Toshiba Semiconductor and Storage. It features non-inverted, three-state outputs and operates within a supply voltage range of 2.0 V to 5.5 V. The device utilizes silicon gate CMOS technology for high-speed operation with a typical propagation delay of 3.9 ns at 5 V. It includes power-down protection on all inputs, allowing tolerance of 5.5 V even without power. Static current is limited to 4 µA maximum.

Feature Summary

• High-speed operation comparable to Schottky TTL with low power consumption
• Power-down protection allows input voltage tolerance up to 5.5 V when unpowered
• Three-state control inputs enable dual 4-bit or single 8-bit configurations
• Reduced switching noise through Q&Q buffer design

Applications

• Two-power-supply system interfaces
• Level translation from 5 V to 3 V systems
• Battery backup circuits

Procurement Notes

Verify the specific suffix (EL, K, or F) against the datasheet to confirm package type and reel specifications. Confirm RoHS compliance status directly with Toshiba sales representatives as indicated in the documentation. Ensure operating conditions remain within the absolute maximum ratings to maintain reliability.

Selection Notes

Select this component for applications requiring high-speed data buffering with low static power consumption. The wide operating voltage range supports various logic families. The power-down protection feature makes it suitable for systems with multiple power rails or standby modes where input voltages may exceed the supply voltage.

Part Context

This part belongs to the TC74VHC series of ultra-high-speed CMOS logic devices. It is functionally compatible with the 74ALS240/244 pinout and functionality. The device is designed to replace older bipolar technologies while offering improved speed and lower power dissipation characteristics.

Replacement Considerations

TC74VHC240F/FK serves as the inverted counterpart within the same family.