CD74FCT162543ETSM

Overview

The CD74FCT162543ETSM is an FCT series bus transceiver manufactured by Harris Corporation. It features two independent functions, each handling eight bits of data with true (non-inverting) output polarity. The device utilizes a 56-pin SSOP package and operates on a CMOS process. It supports bidirectional data flow with independent control inputs. Electrical specifications include a maximum low-level output current of 0.024 A and outputs configured as three-state with series resistors. The component is rated for an operating temperature range from -40 °C to 85 °C.

Feature Summary

• Provides bidirectional data transmission through two independent eight-bit channels
• Integrates bus hold inputs to eliminate the requirement for external pullup resistors
• Features three-state outputs equipped with internal series resistors

Applications

• High-speed bidirectional data bus interfaces
• Memory bus architectures requiring non-inverting signal paths
• System interconnects utilizing FCT logic families

Procurement Notes

Verify the specific suffix ETSM against manufacturer documentation to confirm pinout compatibility and package dimensions. Confirm RoHS compliance status as historical records indicate non-compliance for this series. Validate that the supplier provides original Harris Corporation or authorized distributor traceability. Ensure the operating voltage range matches system requirements before integration.

Selection Notes

Select this component when designing systems requiring high-speed bidirectional transfer with independent channel control. The integrated bus hold feature simplifies circuit design by removing external pullup components. Verify that the 56-SSOP package fits the available PCB footprint. Consider the 3-state output characteristics for proper bus termination and signal integrity management in high-density layouts.

Part Context

This part belongs to the Harris FCT logic family, designed for fast CMOS applications. It serves as a direct replacement for similar 8-bit transceivers in legacy designs. The device maintains compatibility with standard TTL and CMOS logic levels while offering improved switching speeds. It is commonly found in industrial and computing equipment requiring reliable data bus management.

Replacement Considerations

Cross-reference with CD74FCT162H543DTSM for alternative packaging options within the same functional family. Verify pin-to-pin compatibility before substitution. Check for updated manufacturing sources if Harris Corporation production has ceased.