IDT74FCT240TPY

Overview

The IDT74FCT240TPY is a high-speed CMOS bus driver manufactured by Integrated Device Technology. It features two independent 4-bit buffers with inverted outputs and three-state control. The device operates within a supply voltage range of 4.75 V to 5.25 V and supports an operating temperature range from -40 °C to +85 °C. It utilizes a 20-pin SSOP package and is designed for TTL-compatible CMOS applications, providing robust signal buffering capabilities.

Feature Summary

• Provides two independent 4-bit buffer channels with inverted logic output
• Features three-state output control for efficient bus management
• Ensures compatibility with TTL and CMOS logic families
• Operates reliably across industrial temperature ranges

Applications

• High-speed data bus buffering in computing systems
• Signal isolation between different logic domains
• Memory interface circuitry requiring level shifting
• General-purpose digital signal routing

Procurement Notes

Verify the manufacturer designation as Integrated Device Technology or its successor entity, Renesas Electronics, depending on production date. Confirm the package type is strictly 20-SSOP and check for RoHS compliance markings. Ensure the suffix 'TPY' matches the specific reel or tape configuration required for your assembly process. Cross-reference datasheets for any revisions that may affect pinout or electrical characteristics.

Selection Notes

Select this component when dual 4-bit buffered inversion with three-state capability is required. It is suitable for designs needing TTL-to-CMOS compatibility at standard 5V logic levels. Consider the SSOP package constraints for PCB layout. Evaluate propagation delay specifications against system timing requirements to ensure signal integrity is maintained across the bus.

Part Context

This part belongs to the FCT (Fast CMOS Technology) family, known for high speed and low power consumption. It serves as a critical interface component in digital electronics, facilitating data transfer between microprocessors, memory, and peripheral devices. The 74FCT series is widely used in legacy and modern embedded systems requiring reliable logic buffering.

Replacement Considerations

Check for equivalents such as the CY74FCT240TQCT from Texas Instruments, which offers similar functionality in a QSOP-20 package. Verify pin compatibility and electrical parameters before substitution. Note that package differences may require PCB redesign.