CD74HC244E

Overview

The CD74HC244E is an octal buffer and line driver manufactured by Texas Instruments, belonging to the HC logic series. It features eight non-inverting inputs and outputs housed in a 20-pin PDIP package. The device operates within a supply voltage range of 2 V to 6 V. Key electrical parameters include a maximum high-level output current of -7.8 mA and a low-level output current of 7.8 mA. Static current is specified at 8 µA, with a maximum operating supply current of 80 µA. The component supports an extended industrial temperature range from -55 °C to +125 °C.

Feature Summary

• Provides tri-state control for eight independent data lines via active-low enable inputs
• Supports bidirectional bus-oriented communications and memory address/data driving applications
• Features high noise immunity and low power consumption typical of CMOS technology

Applications

• Memory and address drivers
• Clock drivers
• Bus-oriented communications

Procurement Notes

Verify the specific suffix 'E' corresponds to the PDIP-20 package configuration when sourcing. Confirm RoHS compliance status as indicated in official datasheets. Ensure the ordering part number matches the exact manufacturer designation to avoid pinout or electrical specification mismatches during integration.

Selection Notes

Select this component for designs requiring eight-channel buffering with tri-state capability. The wide supply voltage range allows compatibility with various logic families. Consider the PDIP-20 package for through-hole prototyping or manufacturing requirements where surface-mount options are unsuitable.

Part Context

This device is part of the Texas Instruments 74HC family of high-speed CMOS logic devices. It serves as a standard solution for digital signal buffering and line driving in mixed-signal systems. The octal configuration reduces board space compared to using multiple single-channel buffers.

Replacement Considerations

Equivalent parts include SN74HC244 variants from other manufacturers offering identical pinouts and electrical characteristics. Verify package dimensions and thermal specifications before substitution.