MC74LCX244DTR2G-Q

Overview

The MC74LCX244DTR2G-Q is an automotive-grade, low-voltage CMOS octal buffer and line driver manufactured by onsemi. It features non-inverting outputs with three-state control, enabling effective bus-oriented connections. The device operates within a supply voltage range of 2.0 V to 3.6 V and includes 5 V-tolerant inputs and outputs, facilitating safe interfacing with legacy 5 V systems. Designed for high reliability, it meets AEC-Q100 qualification standards for automotive applications, ensuring performance across the specified industrial temperature range.

Feature Summary

• Automotive-grade construction compliant with AEC-Q100 standards for enhanced reliability in vehicle environments.
• Low-voltage operation supporting power-efficient designs within the 2.0 V to 3.6 V supply range.
• Five-volt tolerant I/O architecture allows direct interface with 5 V devices without level shifting.
• Three-state output control minimizes power consumption and prevents bus contention during idle states.

Applications

• Automotive infotainment system data buses
• Electronic control unit (ECU) signal buffering
• In-vehicle communication network interfaces

Procurement Notes

Verify that the specific part number suffix matches the required automotive qualification grade. Confirm package availability and lead times directly with authorized distributors or the manufacturer. Ensure storage conditions adhere to moisture sensitivity level requirements prior to soldering. Cross-reference pinouts with existing board layouts to prevent integration errors during assembly.

Selection Notes

Select this component when designing automotive circuits requiring robust signal buffering between low-voltage logic and 5 V tolerant peripherals. The AEC-Q100 certification makes it suitable for safety-critical or long-life vehicle applications. Consider the TSSOP-20 package constraints regarding thermal dissipation and PCB space. Evaluate propagation delay specifications against system timing requirements to ensure signal integrity at operating frequencies.

Part Context

This component belongs to the MC74LCX series of low-voltage CMOS logic devices from onsemi. The LCX family is engineered for high-speed operation with reduced power consumption compared to standard CMOS technologies. The 'Q' suffix specifically denotes automotive qualification, distinguishing it from commercial variants while maintaining functional compatibility with standard 74LCX logic families.

Replacement Considerations

Direct substitutes include other AEC-Q100 qualified octal buffers such as the MC74LCX244MTCX-Q. Verify that alternative packages maintain identical pin configurations. Ensure replacement parts meet the same 5 V tolerance and voltage supply specifications to guarantee electrical compatibility within the target circuit design.