MC74LCX125DTR2G

Overview

The MC74LCX125DTR2G is a quad buffer and line driver manufactured by onsemi, belonging to the LCX logic family. It features four non-inverting channels with three-state outputs, housed in a TSSOP-14 surface-mount package. The device operates within a supply voltage range of 2.0 V to 3.6 V. Key electrical parameters include a propagation delay of 8 ns at 5 V (typical for the series), high-level output current of -24 mA, and low-level output current of 24 mA. Static current is specified at 8 µA, with an operating temperature range from -40°C to +85°C.

Feature Summary

• Provides four independent non-inverting buffer channels with three-state control for bus-oriented communication.
• Operates across a wide 2.0 V to 3.6 V supply voltage range, enabling direct interfacing between 3.3 V and 5 V systems.
• Features low static power consumption and high noise immunity characteristic of CMOS technology.
• Delivers strong drive capability with ±24 mA output currents to support transmission lines.

Applications

• Clock buffering and distribution in high-speed digital circuits.
• Bus-oriented architectures requiring controlled signal driving and isolation.
• Voltage translation interfaces between 3.3 V and 5 V logic domains.
• Memory module data line drivers and receivers.

Procurement Notes

Verify the specific suffix DTR2G corresponds to the TSSOP-14 package and reel packaging configuration. Confirm RoHS compliance status and manufacturing origin through official datasheets or authorized distributor declarations. Ensure the component meets the required operating temperature range and electrical specifications for the target application environment before finalizing procurement.

Selection Notes

Select this component when a quad buffer with three-state functionality is required for 3.3 V systems. It serves as a suitable replacement for legacy HC or HCT devices where lower voltage operation and reduced power consumption are necessary. Consider the TSSOP-14 footprint constraints and ensure the input/output voltage levels match the system requirements for seamless integration without additional level shifting components.

Part Context

This part belongs to the MC74LCX series, which represents low-voltage CMOS logic designed for high-speed applications. The LCX family offers performance comparable to AC/ACT logic but operates at lower voltages, making it ideal for portable and battery-powered devices. The MC74LCX125 specifically provides buffering capabilities essential for maintaining signal integrity in complex digital designs.

Replacement Considerations

Direct substitutes include MC74LCX125MTCX and MC74LCX125DT. Verify pin compatibility and electrical characteristics against original design specifications. Alternative packages such as SOIC-14 may require adapter considerations if physical footprint changes are permissible.