SN74HCT573PW

Latches Overview

The SN74HCT573PW is an octal transparent D-type latch manufactured by Texas Instruments. It features eight separate D-type inputs and three-state true outputs designed for bus-oriented applications. The device operates within a supply voltage range of 4.5V to 5.5V. It includes a latch enable (LE) input and an output enable (OE) input common to all latches. When LE is high, the outputs follow the data inputs; when LE is low, the data is latched. The component is housed in a 20-pin TSSOP package.

Latches Feature Summary

• Octal transparent D-type latch architecture with independent data inputs
• Three-state outputs suitable for bus-oriented system designs
• Compatible with Low-power Schottky TTL (LSTTL) logic levels

Latches Applications

• Bus-oriented memory address latching
• I/O port expansion circuits
• Register file storage elements

Latches Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet to confirm package type and environmental compliance. Ensure the selected variant matches the required operating temperature range and pin configuration for your PCB layout. Cross-reference the part number with official distributor catalogs to validate authenticity and current production status before finalizing procurement orders.

Latches Selection Notes

Select this component when designing systems requiring eight-bit data storage with tri-state bus interfacing capabilities. It is appropriate for applications needing compatibility with standard 5V logic families. Consider the propagation delay specifications relative to your system clock speed. Verify that the TSSOP-20 package dimensions fit your available board space and assembly constraints.

Latches Part Context

This device belongs to the SN74HCT series of high-speed CMOS logic products. The HCT designation indicates compatibility with TTL input voltages while maintaining CMOS power consumption benefits. This family provides robust performance for general-purpose digital logic applications requiring reliable data storage and transfer functions in electronic systems.

Latches Replacement Considerations

SN74HCT573PWE4

Latches FAQ

How does the latch enable input affect data storage?

When the latch enable input is high, the outputs are transparent and follow the data inputs. When the latch enable input goes low, the data present at the inputs is stored in the latches.

What is the function of the output enable input?

The output enable input controls the state of the three-state outputs. When active low, the latched data is available at the outputs. When inactive high, the outputs enter a high-impedance state.