MC74AC125MG

Overview

The MC74AC125MG is a quad 3-state buffer manufactured by onsemi, utilizing high-performance silicon-gate CMOS technology. It operates within a supply voltage range of 2.0 V to 6.0 V and supports an ambient operating temperature from -40°C to +85°C. The device features four non-inverting inputs and outputs capable of sourcing or sinking up to 24 mA. Propagation delays are specified at 9 ns maximum at 3.3 V and 7 ns maximum at 5.0 V with a 50 pF load. Quiescent supply current is typically 8 µA.

Feature Summary

• Provides four independent non-inverting buffers with low-enable control for signal driving applications
• Outputs support both source and sink currents for robust interface capabilities
• Operates across a wide supply voltage range suitable for various logic families

Applications

• High-speed data bus interfacing
• Clock buffering and distribution
• Memory address/data bus drivers

Procurement Notes

Verify the specific package suffix associated with the MG designation against official ordering lists, as standard datasheets primarily list DG (SOIC-14) and DR2G (SOIC-14 Reel). Confirm RoHS compliance status and moisture sensitivity level requirements for your assembly process. Ensure the selected variant matches the required shipping quantity and tape/reel specifications if applicable.

Selection Notes

Select this component when a quad buffer with 3-state output control is required for AC logic family compatibility. Consider the MC74ACT125 if TTL-compatible input thresholds are necessary instead of standard CMOS levels. Evaluate thermal resistance values based on the chosen package style and expected power dissipation in still air conditions.

Part Context

This part belongs to the MC74AC125 series of quad 3-state buffers. It is functionally compatible with other devices in the 74AC logic family but offers improved speed and lower power consumption compared to older 74HC or 74HCT equivalents. The device is designed for general-purpose digital applications requiring reliable signal transmission.

Replacement Considerations

MC74AC125DG serves as a direct pin-compatible alternative in SOIC-14 packaging. MC74AC125DTR2G provides the same functionality in TSSOP-14 packaging. Verify that any substitute maintains the same 3-state enable logic and output drive characteristics.