74VHC244N

Buffers, Drivers, Receivers, Transceivers Overview

The onsemi 74VHC244N is an octal bus buffer and line driver belonging to the AHC/VHC logic family. It features eight non-inverting inputs and outputs with three-state capability, controlled by a low-active enable signal. The device operates within a supply voltage range of 2.0 V to 5.5 V, supporting low static power consumption of 4 µA. It utilizes a 20-pin DIP package suitable for through-hole mounting. Key electrical characteristics include a maximum propagation delay of 11.9 ns at 3.3 V and 7.5 ns at 5 V, with output drive currents of ±8 mA.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Provides octal buffering with independent control of two groups of four bits via dual enable inputs.
• Features three-state outputs to facilitate direct connection to bus-oriented systems without additional interface hardware.
• Supports wide supply voltage operation from 2.0 V to 5.5 V, ensuring compatibility with various CMOS logic families.

Buffers, Drivers, Receivers, Transceivers Applications

• Bus-oriented memory and address drivers
• Clock drivers and buffer circuits
• Multiple bus transceivers

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific manufacturer origin, as Fairchild Semiconductor was acquired by onsemi. Ensure the part number suffix matches the required package type, as 'N' typically denotes a 20-lead DIP configuration. Confirm RoHS compliance status and check for any recent product change notices that may affect pinout or electrical specifications relative to legacy documentation.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when designing systems requiring high-speed octal buffering with low power consumption. The 74VHC244N is suitable for applications needing operation across a broad voltage range, including 3.3 V and 5 V systems. Consider the DIP package constraint if surface-mount alternatives are preferred, and verify that the propagation delay meets the timing requirements of the target bus architecture.

Buffers, Drivers, Receivers, Transceivers Part Context

This component is part of the broader 74VHC series of high-speed CMOS logic devices manufactured by onsemi. The series is designed to offer performance comparable to TTL while maintaining low power dissipation typical of CMOS technology. The 74VHC244N specifically addresses the need for robust data buffering in digital systems, serving as a fundamental building block for complex integrated circuits and peripheral interfaces.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Compatible substitutes include MC74VHC244DTG and MM74VHC244WM, though these utilize different packages such as TSSOP or SOIC. Verify pin-to-pin compatibility and ensure that the alternative package supports the required thermal and mechanical constraints of the original design.