CY74FCT240CTSOCTE4

Overview

The CY74FCT240CTSOCTE4 is an octal buffer and line driver from the Texas Instruments FCT logic series. It features two independent four-bit drivers with inverted outputs and three-state capabilities. The device operates within a supply voltage range of 4.75 V to 5.25 V, drawing a maximum static current of 100 nA and operating power current of 200 nA. It provides high drive strength with output currents of -32 mA (high) and 64 mA (low). Packaged in a 20-pin QSOP, it supports surface mount installation and functions reliably across an industrial temperature range of -40°C to +85°C.

Feature Summary

• Octal configuration comprising two independent four-bit buffers
• Inverted logic polarity for signal inversion applications
• Three-state outputs enabling bus line isolation and multiplexing
• CMOS technology ensuring low static power consumption

Applications

• Bus-oriented memory and register implementations
• Clock drivers and buffering circuits
• Control signal routing on parallel architectures
• High-performance register banks

Procurement Notes

Verify the specific suffix 'E4' indicates lead-free compliance and RoHS status during sourcing. Confirm package integrity as the component utilizes a QSOP-20 housing. Check manufacturer documentation for moisture sensitivity level handling requirements prior to assembly. Ensure design compatibility with 5V CMOS logic families given the specified operating voltage constraints.

Selection Notes

Select this component when inverted octal buffering with three-state control is required. Compare propagation delay specifications against system timing budgets. Evaluate pinout compatibility with existing PCB layouts using the 20-pin QSOP form factor. Consider thermal performance within the -40°C to +85°C operational envelope for industrial environments.

Part Context

This part belongs to the 74FCT240 family of high-speed CMOS logic devices. It serves as a digital buffer designed for driving heavy capacitive loads on data buses. The FCT series bridges the performance gap between standard TTL and advanced CMOS technologies, offering faster switching speeds while maintaining compatible voltage levels.

Replacement Considerations

Public confirmed substitute: CY74FCT240ATSOCT.