MC74HCT244ADTR2G

Overview

The MC74HCT244ADTR2G is an octal buffer and line driver manufactured by onsemi, belonging to the HCT logic series. It features eight non-inverting inputs and outputs with three-state capability, housed in a TSSOP-20 surface-mount package. The device operates within a supply voltage range of 4.5 V to 5.5 V. Key electrical parameters include a propagation delay of 28 ns at 5 V, static current of 4 uA, and output drive currents of -7.2 mA (high) and 7.2 mA (low). It supports an operating temperature range from -40°C to +85°C.

Feature Summary

• Provides eight-channel non-inverting buffering with three-state output control for bus-oriented architectures.
• Compatible with TTL voltage levels while utilizing CMOS technology for low power consumption.
• Designed for surface-mount assembly using a compact TSSOP-20 package format.

Applications

• Bus-oriented memory and address drivers
• Clock distribution and buffering
• Bidirectional data bus transceivers

Procurement Notes

Verify the specific suffix ADTR2G to confirm the TSSOP-20 package and tape-and-reel packaging configuration. Ensure compatibility with standard 5V logic systems, as this component belongs to the HCT family which interfaces directly with TTL levels. Confirm moisture sensitivity handling requirements during storage and soldering processes according to manufacturer guidelines.

Selection Notes

Select this component when an octal buffer with three-state outputs is required for high-speed digital applications. The HCT series ensures compatibility with existing TTL designs while offering improved noise immunity. Consider the TSSOP-20 package for space-constrained PCB layouts requiring surface-mount technology.

Part Context

This part is part of the MC74HCT244A family of octal buffers and line drivers. It serves as a critical interface component in digital systems, facilitating signal integrity across buses. The HCT series is widely used in computing and telecommunications equipment where reliable data transmission and low power dissipation are essential design criteria.

Replacement Considerations

Check for pin-compatible alternatives such as MM74HCT244MTCX or other manufacturers' HCT244 variants. Verify that substitute parts maintain identical logic functionality, voltage ranges, and package dimensions to ensure seamless integration without redesigning the host circuit board.