CD74ACT473M

Buffers, Drivers, Receivers, Transceivers Overview

The CD74ACT473M is an octal transparent latch manufactured by Harris Corporation. It features eight D-type latches with three-state outputs, designed for high-speed CMOS logic applications. The device operates within a supply voltage range of 2.0V to 6.0V and supports parallel data input with serial or parallel output configurations. It includes an active-low output enable control and a positive-edge-triggered clock input. The component is housed in a standard plastic DIP package suitable for through-hole mounting on printed circuit boards.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Octal configuration providing eight independent D-type latches for parallel data storage
• Three-state outputs allowing direct connection to system buses without external buffers
• Transparent latch operation enabling data propagation from input to output when enabled
• Active-low output enable control for managing bus access and signal isolation

Buffers, Drivers, Receivers, Transceivers Applications

• Parallel-to-serial data conversion circuits
• Bus interface buffering in microprocessor systems
• Temporary data storage in digital logic designs
• I/O port expansion for embedded controllers

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the manufacturer origin as Harris Semiconductor or its successors, noting that original Harris documentation may be archived. Confirm the package type matches the required PCB footprint, typically a wide-body DIP. Check for specific ordering suffixes that denote temperature ranges or tape-and-reel packaging if automated assembly is planned. Ensure compatibility with the target system's voltage levels and signal integrity requirements before procurement.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when an octal latch with three-state output capability is required for bus-oriented designs. Consider the ACT series speed and power characteristics relative to AC or HC alternatives. Verify that the operating voltage range aligns with the system's power supply rails. Evaluate the package availability and lead times, as legacy components may have limited stock from primary distributors.

Buffers, Drivers, Receivers, Transceivers Part Context

The CD74ACT473M belongs to the Harris Semiconductor 74ACT logic family, known for high-speed performance and low power consumption. Harris Semiconductor was acquired by National Semiconductor, which later merged with Texas Instruments. Consequently, datasheets and support for this part may now be hosted under Texas Instruments or legacy Harris archives. The component represents a standard solution for octal latching in industrial and commercial electronics.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Compatible substitutes include the SN74ACT473 from Texas Instruments, which shares identical pinout and functionality. Other equivalents may include the MC165473 from ON Semiconductor or similar octal latches from other manufacturers. Verify electrical specifications and package dimensions before substitution to ensure mechanical and electrical compatibility.