CY74FCT157CTDR

Overview

The CY74FCT157CTDR is a quad 2-input multiplexer featuring three-state outputs, manufactured by Texas Instruments. It operates within a supply voltage range of 4.75 V to 5.25 V and exhibits a propagation delay of 4.3 ns at 5 V. The device contains four independent circuits and is housed in a 16-SOIC package with a narrow body width of 0.154 inches (3.90 mm). It supports surface-mount installation and functions reliably across an operating temperature range from -40°C to +85°C.

Feature Summary

• Provides four independent 2-to-1 data selection paths for signal routing
• Features three-state outputs to facilitate bus-oriented systems
• Utilizes FCT CMOS technology for high-speed switching performance

Applications

• Bus-oriented system architectures requiring data selection
• Portable battery-powered equipment due to low power consumption characteristics
• High-speed data routing applications in industrial control systems

Procurement Notes

Verify the specific suffix 'CTDR' corresponds to the tape-and-reel packaging format rather than tube packaging when sourcing components. Confirm that the 16-SOIC package dimensions match the design footprint requirements. Ensure the manufacturer designation remains Texas Instruments to guarantee compatibility with the FCT logic family specifications and electrical characteristics defined in the official datasheet.

Selection Notes

Select this component when designing systems requiring multiple independent 2:1 multiplexing functions within a single integrated circuit. The three-state output capability allows for direct connection to bidirectional buses without external buffering. Consider the 4.3 ns propagation delay for timing constraints in high-speed digital interfaces. The wide operating temperature range makes it suitable for diverse environmental conditions.

Part Context

This part belongs to the CY74FCT157T series of high-speed CMOS logic devices. It is functionally compatible with other FCT series multiplexers but offers specific pinout and packaging configurations. The device represents an evolution in FCT technology, providing improved speed and lower power consumption compared to earlier logic families while maintaining pin compatibility with standard TTL interfaces.

Replacement Considerations

Direct substitutes include the CY74FCT157CTD for tube-packaged equivalents or the CY74FCT157CTQCT for SSOP packaging variants. Verify that any replacement maintains the same 16-pin SOIC footprint and electrical parameters to ensure board-level compatibility without redesign.