CD74FCT245M

Overview

The CD74FCT245M is a BiCMOS octal bus transceiver featuring three-state outputs, manufactured by Texas Instruments. It operates within a supply voltage range of 4.75 V to 5.25 V and supports TTL input and output levels. The device provides non-inverting data transmission with a maximum propagation delay of 4.6 ns at 5 V. It offers a high low-level output current of 64 mA and a high-level output current of -32 mA. The component is housed in a 20-pin SOIC package and functions reliably across an operating temperature range of 0 °C to 70 °C.

Feature Summary

• BiCMOS technology enables fast switching speeds and robust drive capability for high-speed digital interfaces.
• Three-state outputs allow direct connection to system buses without additional buffering or line drivers.
• TTL-compatible inputs ensure seamless integration with standard logic families in mixed-voltage environments.

Applications

• High-speed data bus architectures requiring bidirectional signal transfer
• Memory interface circuits connecting microprocessors to storage devices
• Industrial control systems utilizing parallel data communication lines

Procurement Notes

Verify the specific suffix against official Texas Instruments documentation to confirm package type and temperature grade. Ensure the ordering part number matches the required SOIC-20 configuration. Cross-reference the manufacturer's latest datasheet for any design changes or material updates that may affect compatibility with existing board layouts.

Selection Notes

Select this component when a wide output drive current is necessary for long bus traces or multiple loads. The FCT series offers superior speed compared to standard 74F logic while maintaining TTL compatibility. Consider the thermal performance of the SOIC package if the application involves continuous high-current operation within the specified industrial temperature range.

Part Context

This device belongs to the Texas Instruments FCT logic family, designed for high-performance applications. It serves as a standard solution for octal bus transceivers where speed and drive strength are critical. The CD74 prefix indicates a commercial-grade variant suitable for general-purpose electronic equipment and computing hardware.

Replacement Considerations

The CY74FCT245ATQCT and CY74FCT245ATSOCT are functionally equivalent variants from Texas Instruments offering different packaging options such as SSOP and TSSOP. Verify pinout compatibility and package dimensions before substituting these parts in existing designs.