TC74ACT244PF

Overview

The TC74ACT244PF is a dual buffer and line driver from Toshiba’s ACT logic family, housed in a 20-pin DIP package. It features two independent non-inverting buffers with three-state outputs. The device operates within a supply voltage range of 4.5V to 5.5V. It provides high drive capability with output currents of ±24mA. Propagation delay is typically 4.7ns. The component supports an operating temperature range from -40°C to +85°C.

Feature Summary

• Dual configuration providing two independent four-bit buffers
• Three-state output control for bus-oriented applications
• High current drive capability suitable for loading heavy capacitive loads

Applications

• Clock buffering and distribution systems
• Memory address and data bus drivers
• I/O port expansion circuits

Procurement Notes

Verify the specific suffix 'PF' confirms the 20-pin DIP through-hole package variant. Confirm the ACT logic series designation matches system voltage requirements of 4.5V to 5.5V. Ensure the manufacturer is identified as Toshiba Semiconductor and Storage to guarantee component authenticity and datasheet alignment.

Selection Notes

Select this component when a dual eight-bit buffer with three-state control is required in a through-hole format. The ACT series offers faster switching speeds compared to standard AC logic while maintaining CMOS power efficiency. Verify that the 20-DIP footprint fits the target PCB layout constraints.

Part Context

This part belongs to Toshiba’s TC74ACT series of advanced CMOS logic devices. It serves as a functional equivalent to industry-standard 74ACT244 components. The device is designed for high-speed digital applications requiring reliable signal integrity and noise immunity in commercial and industrial environments.

Replacement Considerations

Compatible substitutes include other manufacturers' 74ACT244 variants in 20-DIP packages. Verify pin compatibility and electrical specifications such as propagation delay and output current before substitution.

FAQ

What is the logic polarity of the TC74ACT244PF?

The TC74ACT244PF is a non-inverting buffer, meaning the output signal follows the input signal state without inversion.

How many bits does each buffer element contain?

The device contains two independent elements, with each element handling four bits, totaling eight buffered channels.