CY74FCT646ATSOCT

Overview

The CY74FCT646ATSOCT is an octal registered bus transceiver manufactured by Texas Instruments. It operates within a supply voltage range of 4.75 V to 5.25 V and features TTL-compatible input and output levels. The device provides three-state outputs with a low-level output current of 64 mA and a high-level output current of -32 mA. Propagation delay is specified at 9 ns. It is housed in a 24-pin SOIC package and functions as a non-inverting logic circuit.

Feature Summary

• Integrates eight D-type registers with bus transceiver functionality for data latching and bidirectional transfer.
• Provides three-state outputs to facilitate efficient bus line management and system isolation.
• Accepts TTL logic level inputs, ensuring compatibility with standard digital control signals.

Applications

• Clocked data buffering in high-speed digital systems
• Bus-oriented memory register architectures
• Bidirectional data transmission between microprocessors and peripheral devices

Procurement Notes

Verify the specific suffix 'A' against official datasheets to confirm it denotes the commercial temperature grade variant rather than a different electrical specification. Ensure the 'TSOCT' designation matches the required SOIC-24 tape and reel packaging format for automated assembly processes.

Selection Notes

Select this component when an octal configuration with internal registration is required for bus applications. The FCT series offers faster switching speeds compared to standard CMOS alternatives. Confirm that the 9 ns propagation delay meets the timing constraints of the target system architecture.

Part Context

This part belongs to the Texas Instruments CY74FCT646T family of registered bus transceivers. These components are designed for high-performance digital interfaces where data integrity and speed are critical. The FCT technology combines the speed of bipolar circuits with the power efficiency of CMOS technology.

Replacement Considerations

CY74FCT646TSOCT is a verified substitute within the same product family offering identical functional specifications and pinout compatibility.