MC74AC157DG

Overview

The MC74AC157DG is a quad 2-input multiplexer from the 74AC logic series, manufactured by onsemi. It operates within a supply voltage range of 2.0 V to 6.0 V and supports an ambient temperature range of -40°C to +85°C. The device features four independent data channels with common Select (S) and active-LOW Enable (E) inputs. Outputs provide non-inverted data selection with source/sink capabilities of 24 mA. Propagation delays are specified at 6.5 ns maximum at 5.0 V and 8.5 ns maximum at 3.3 V under standard loading conditions.

Feature Summary

• Quad 2-input multiplexing architecture with common control lines
• High current output drive capability for direct bus interfacing
• Active-LOW enable function for global output control
• Lead-free packaging compliant with environmental standards

Applications

• Data routing between multiple register groups to common output buses
• Implementation of gating functions as a function generator
• Selection of data sources in digital logic circuits

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and shipping quantity. The 'DG' suffix indicates a SOIC-16 lead-free package supplied in rails. Confirm that the required operating voltage and temperature ranges align with the system design specifications before procurement.

Selection Notes

Select this component when a high-speed quad multiplexer with strong drive capability is required. Ensure the application voltage falls within the 2V to 6V range. Consider the MC74ACT157 if TTL-compatible input thresholds are necessary for the specific interface requirements.

Part Context

This part belongs to the MC74AC157 family of high-speed CMOS logic devices. It serves as a digital switch implementation, allowing four bits of data to be selected from two sources. The device is designed for general-purpose digital applications requiring reliable data path switching within standard industrial temperature limits.

Replacement Considerations

MC74ACT157DG: Offers identical functionality with TTL-compatible input thresholds.