MC74LCX244DWR2G

Overview

The MC74LCX244DWR2G is a low-voltage CMOS octal buffer and line driver manufactured by onsemi. It features eight non-inverting channels with three-state outputs, housed in a 20-SOIC package. The device operates within a supply voltage range of 2V to 5.5V. Key electrical parameters include an output drive capability of 24mA for both high and low states, a maximum static current of 8µA, and a typical operating supply current of 80µA. Propagation delay is specified at 9ns when powered at 3.3V and reduces to 7ns at 5V. The component supports surface-mount installation and functions reliably across an extended temperature range from -40°C to +85°C.

Feature Summary

• Provides eight independent non-inverting signal paths for bus interfacing applications
• Features three-state outputs allowing multiple drivers to share a common bus structure
• Designed with 5V-tolerant inputs and outputs for safe interface between different voltage domains
• Utilizes advanced low-voltage CMOS technology to achieve minimal power consumption

Applications

• Memory module data buffering and address latching
• Clock distribution networks requiring signal isolation
• Bidirectional bus architecture implementations
• Portable equipment utilizing battery-powered logic systems

Procurement Notes

Verify the specific ordering suffix to ensure the correct tape and reel configuration matches your automated assembly requirements. Confirm that the moisture sensitivity level aligns with your facility's floor life management protocols. Cross-reference the package dimensions against your PCB footprint library to guarantee mechanical compatibility during placement. Ensure the selected variant meets all applicable environmental compliance standards required for your final product certification.

Selection Notes

Select this component when designing systems that require driving heavy capacitive loads or connecting buses between devices operating at different voltage levels. The wide supply voltage range allows flexibility in power domain design without needing additional level shifters. Consider the propagation delay specifications to ensure timing margins are sufficient for your target clock frequencies. Evaluate the thermal performance characteristics if the device will operate near the upper limits of its specified temperature range.

Part Context

This part belongs to the MC74LCX series, which represents onsemi's family of low-voltage CMOS logic devices. The LCX series is engineered to provide performance comparable to older TTL technologies while offering significantly lower power dissipation. These components are widely used in modern electronic designs where energy efficiency and compatibility with mixed-voltage environments are critical design constraints.

Replacement Considerations

Direct functional substitutes within the same manufacturer portfolio include the MC74LCX244DWG tube version. Other compatible alternatives may exist from different vendors producing equivalent 74LCX244 devices, provided they match the pinout, voltage ratings, and package dimensions exactly.