74LCX244WM

Overview

The onsemi 74LCX244WM is a low-voltage CMOS octal buffer and line driver housed in a 20-SOIC surface-mount package. It operates within a supply voltage range of 2 V to 3.6 V, featuring eight non-inverting inputs and three-state outputs. The device provides an output drive capability of 24 mA for both high and low states, with a typical static current of 10 uA. Propagation delay is specified at 7.5 ns at 2.7 V and 6.5 ns at 3.3 V. It supports an operating temperature range from -40°C to +85°C.

Feature Summary

• Provides eight-channel buffering with non-inverting logic polarity for signal integrity.
• Features three-state outputs to facilitate bus-oriented connections and system isolation.
• Supports hot swapping capabilities to allow safe insertion and removal during operation.
• Includes IOFF functionality to maintain high-impedance states when power is removed.

Applications

• Memory address driving applications requiring stable signal transmission.
• Bus-oriented systems utilizing TTL-compatible interfaces.
• Clock distribution networks needing low-power buffering.
• High-impedance data lines in portable electronic devices.

Procurement Notes

Verify the specific suffix 'WM' corresponds to the tube packaging configuration rather than reel or cut tape options. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure the selected component matches the required SOIC-20 footprint and pinout specifications for the target PCB design.

Selection Notes

Select this component for designs requiring low-voltage operation between 2 V and 3.6 V with moderate drive strength. Consider the 7.5 ns propagation delay at 2.7 V for timing-critical paths. Evaluate the 24 mA output current against load requirements to ensure adequate noise margins without exceeding thermal limits in the SOIC-20 package.

Part Context

This part belongs to the 74LCX series of low-voltage CMOS logic devices manufactured by onsemi. It serves as an octal buffer variant within the broader 74xx family, designed to replace older TTL technologies in modern low-power digital circuits. The SOIC-20 package offers a compact solution for space-constrained board layouts.

Replacement Considerations

Direct substitutes include MC74LCX244DWG and MC74LCX244DWR2G from onsemi. Verify pin compatibility and electrical parameters before substitution.