SN74F253DR

Overview

The SN74F253DR is a high-speed silicon-gate CMOS quad multiplexer from the Texas Instruments 74F series. It integrates two independent 4-input to 1-output data selectors within a single 16-pin SOIC package. The device operates on a single power supply ranging from 4.5 V to 5.5 V and supports surface-mount installation. It features a propagation delay of 7 ns, ensuring rapid signal switching for digital logic applications.

Feature Summary

• Integrates two independent 4-to-1 multiplexing circuits in a compact package
• Provides high-speed data selection with low propagation delay characteristics
• Supports standard 5 V logic operation with defined output drive capabilities

Applications

• Data routing in digital communication systems
• Address decoding in microprocessor-based designs
• Signal selection in test and measurement equipment

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and tape-and-reel specifications. Ensure the component meets RoHS compliance requirements for your target market. Cross-reference the datasheet revision history to validate electrical parameters before finalizing procurement orders.

Selection Notes

Select this component when high-speed switching is required compared to standard LS or HC logic families. The dual-channel architecture reduces board space by combining two multiplexers into one package. Verify that the 5 V operating voltage aligns with the system's power distribution network and logic level standards.

Part Context

This part belongs to the Texas Instruments 74F (Fast) logic family, known for superior speed performance over earlier TTL technologies. The SN74F253 serves as a functional equivalent to other industry-standard quad multiplexers but offers distinct propagation delays. It is designed for general-purpose digital logic applications requiring reliable signal path control.

Replacement Considerations

Compatible substitutes include the SN74LS253DR for lower-speed applications and the SN74HC253DR for broader voltage range compatibility. Verify pinout consistency and electrical characteristics before swapping components in existing designs.