MC74LCX244DTR2

Overview

The MC74LCX244DTR2G is an octal buffer and line driver from the onsemi 74LCX logic family. It features eight non-inverting inputs with three-state outputs, designed for low-voltage CMOS applications. The device operates within a supply voltage range of 1.65 V to 3.6 V. It provides high drive capability with output currents of ±24 mA. The propagation delay is specified at 10.3 ns. The component supports surface-mount installation in a TSSOP-20 package and functions reliably across an operating temperature range of -40°C to +125°C.

Feature Summary

• Octal configuration providing eight independent non-inverting signal paths
• Three-state output control enabling bus-oriented communication architectures
• Low quiescent current consumption suitable for power-sensitive designs
• Wide operating temperature range supporting industrial environment requirements

Applications

• Memory mapping and address buffering in embedded systems
• Clock distribution networks requiring signal isolation
• Data bus transceivers for bidirectional data flow management
• I/O port expansion for microcontroller interfaces

Procurement Notes

Verify the complete part number includes the trailing 'G' suffix, indicating RoHS compliance, as the base model MC74LCX244DTR2 may refer to older or non-compliant variants. Confirm the package type is TSSOP-20 and check the specific datasheet revision for electrical characteristics. Ensure the supplier provides official documentation matching the manufacturer's specifications before procurement.

Selection Notes

Select this component when designing low-voltage digital circuits requiring high-density buffering. The 74LCX series offers superior speed compared to standard HC logic while maintaining lower power consumption. Consider the 3.6 V maximum rating when interfacing with higher voltage domains, ensuring input tolerance levels are respected. The wide temperature range makes it suitable for harsh environments where standard commercial grade parts may fail.

Part Context

This device belongs to the 74LCX family of low-voltage CMOS logic ICs manufactured by onsemi. It serves as a direct replacement for legacy 74HC244 devices in modern low-power applications. The octal buffer design allows for efficient signal routing in complex digital systems. It is widely used in consumer electronics, telecommunications, and industrial control panels where space and power efficiency are critical constraints.

Replacement Considerations

MC74LCX244ADTR2G is a verified substitute offering similar functionality with potentially updated manufacturing processes. Both parts share the same logical function and pinout compatibility. Verify that any alternative maintains the 1.65 V to 3.6 V operating range and TSSOP-20 package form factor to ensure seamless integration into existing PCB layouts.