Manufacturer Part Number

SN74AHCT573DWR

Description

D-Type transparent latch IC, single channel with 8 inputs and 8 outputs. Features tri-state outputs for bus-oriented applications. Packaged in a 20-pin SOIC surface-mount case. Designed for fast switching and low power consumption. Operates from 4.5V to 5.5V supply voltage.

Specifications

Logic type: D-Type transparent latch

Channel configuration: 1 channel, 8 inputs to 8 outputs

Output type: Tri-state

Supply voltage range: 4.5V to 5.5V

Propagation delay time: 1 nanosecond typical

Output current (high and low): 8mA each

Operating temperature range: -40°C to 85°C

Package: 20-pin SOIC (7.50mm width)

Mounting type: Surface mount

Moisture Sensitivity Level: 1 (unlimited)

RoHS status: ROHS3 compliant

REACH status: Unaffected

Device Structure

Single channel D-type transparent latch with 8 parallel inputs and corresponding 8 parallel tri-state outputs. The device has a transparent latch function, meaning data passes through when the latch enable is active, and latches the input when disabled.

Performance Characteristics

Very low propagation delay of around 1 ns for high-speed operation

Balanced output current drive of 8mA for both high and low states

Wide operating voltage range ensuring compatibility with standard 5V logic systems

Reliable operation across extended industrial temperature range

Tri-state outputs allow easy connection to bus systems without output conflicts

Low power consumption consistent with 74AHCT logic family standards

Application Environments

Digital bus systems requiring latch registers

Data storage and temporary data holding in digital circuits

Systems requiring buffer and data isolation using tri-state outputs

Industrial, commercial, and consumer electronic devices within -40°C to 85°C

Surface mount PCB assemblies in logic and interface circuits

Selection Guidelines

Choose when 8-bit wide transparent latching with fast switching is required

Suitable for 5V powered systems with standard TTL input thresholds

Select the SOIC 20-pin package for compact surface mount applications

Verify output drive strength meets system current requirements (8mA)

Confirm temperature range suits application environment

Usage Considerations

Ensure supply voltage stays within 4.5V to 5.5V for proper function

Use tri-state outputs carefully to avoid bus contention

Follow recommended PCB layout and grounding practices for high-speed logic

Handle according to MSL 1 moisture sensitivity standards to avoid damage

Observe maximum current ratings and input voltage levels specified in datasheet

Potential Equivalent/Replacement Models

Texas Instruments 74AHCT573 variants with different package options (e.g., TDSON, TSSOP)

SN74LVT573 series as a lower voltage alternative but check electrical compatibility

74HCT573 from other manufacturers like Nexperia, ON Semiconductor, or STMicroelectronics (check exact specs)

For verified equivalents or custom recommendations, contact Ariat-Tech sales team via website for updated information

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