74FCT245APC

Buffers, Drivers, Receivers, Transceivers Overview

The National Semiconductor 74FCT245APC is an octal bus transceiver belonging to the FCT logic series. It features one functional block with eight bits of data width and true output polarity. The device utilizes CMOS technology and operates within a supply voltage range of 4.75 V to 5.25 V, with a nominal rating of 5 V. It provides three-state outputs for effective bus isolation. The component is housed in a plastic DIP-20 package and exhibits a propagation delay of approximately 7 ns. It supports bidirectional data transfer controlled by a direction input.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Provides bidirectional data transmission across an eight-bit wide bus path
• Features three-state outputs to prevent signal contention on shared buses
• Includes direction control functionality for managing data flow orientation

Buffers, Drivers, Receivers, Transceivers Applications

• Bidirectional data bus interfacing between microprocessors and memory modules
• Connecting I/O ports to system buses in computer architectures
• General-purpose data routing in digital logic circuits requiring level shifting

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the manufacturer origin carefully, as National Semiconductor assets were acquired by Texas Instruments. Confirm that the specific part number corresponds to the original National Semiconductor production run rather than a TI rebranding or successor variant. Ensure the package type matches the required DIP-20 footprint and validate the electrical specifications against current design requirements before procurement.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when a standard 5V FCT logic interface is required for octal data transfer. It serves as a direct replacement for other 74FCT245 variants from different manufacturers provided the pinout and electrical characteristics are compatible. Consider the plastic DIP packaging constraints if surface-mount solutions are preferred, and verify that the 7 ns propagation delay meets the timing constraints of the target application.

Buffers, Drivers, Receivers, Transceivers Part Context

This device is part of the broader 74FCT family of high-speed CMOS logic components. The 74FCT245 architecture is widely used in systems requiring fast, reliable bidirectional communication. Similar parts include the 74FCT245ATQ and various equivalents from IDT and Cypress, which share the same logical function but may differ in package style or minor electrical parameters.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Cross-reference with 74FCT245 equivalents from IDT (e.g., 74FCT245SC) or Cypress (e.g., CY74FCT245). Verify pin compatibility and ensure the substitute maintains the 5V operation and three-state output characteristics.