TC74LCX244F(EL,K,F

Overview

The TC74LCX244F(EL,K,F) is a low-voltage octal bus buffer manufactured by Toshiba Semiconductor and Storage. It operates within a power supply voltage range of 1.65 V to 3.6 V, with specific data retention support down to 1.5 V. The device features non-inverting logic with two active-low output enables and provides high-speed operation characterized by 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. Inputs and outputs are 5-V tolerant, allowing interface with 5 V supply environments. The component supports an operating temperature range from -40 °C to 85 °C.

Feature Summary

• Provides 5-V tolerant inputs and outputs for interfacing between low-voltage and 5 V systems.
• Includes power-down protection on all inputs and outputs to prevent excessive current draw.
• Features pin and function compatibility with standard 74 series buffers such as AC, VHC, HC, F, ALS, and LS types.

Applications

• Used in 3.3-V system designs requiring high-speed data buffering.
• Functions as a memory address driver within 3-state memory architectures.
• Interfaces low-voltage logic circuits with 5 V supply environments.

Procurement Notes

Verify the specific package variant required, as the suffix indicates either SOP or VSSOP packaging. Confirm that the application environment remains within the specified 1.65 V to 3.6 V operating voltage range. Ensure unused inputs are tied to VCC or GND to maintain normal operation. Check compliance with RoHS directives if environmental regulations apply to the final assembly.

Selection Notes

Select this component when designing for low-voltage (3.3 V) applications that require robust drive capability and 5-V tolerance. It is suitable for replacing older 74 series buffers where lower power dissipation and higher speed are necessary. Consider the available package options based on board space constraints and thermal requirements.

Part Context

This part belongs to the TC74LCX series of low-voltage CMOS digital integrated circuits. It is designed for use in 3.3-V systems to achieve high-speed operation while maintaining low power consumption. The device serves as a direct replacement for various legacy 74 series octal buffers, offering improved performance characteristics compatible with modern low-voltage logic standards.

Replacement Considerations

Pin and function compatible with 74AC/VHC/HC/F/ALS/LS 244 type devices.