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Product Detailed Parameters
- Description：AUTOMOTIVE OCTAL D-TYPE TRANSPAR
- Series：74ACT
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Logic Type：D-Type Transparent Latch
- Circuit：8:08
- Output Type：Tri-State, Non-Inverted
- Voltage - Supply：4.5V ~ 5.5V
- Independent Circuits：1
- Delay Time - Propagation：6.2ns
- Current - Output High, Low：24mA, 24mA
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：20-TSSOP (0.173", 4.40mm Width)
- Supplier Device Package：20-TSSOP
- Grade：Automotive
- Qualification：AEC-Q100
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Overview
The SN74ACT573QPWRQ1 is an automotive-grade octal D-type transparent latch with 3-state outputs. It operates within a supply voltage range of 4.5V to 5.5V and accepts input voltages up to 5.5V. The device features a maximum propagation delay of 9.5ns at 5V and TTL-voltage compatible inputs. Designed for driving highly capacitive or low-impedance loads, it supports parallel data storage and digital bus buffering applications.
Feature Summary
- Features 3-state outputs designed specifically for driving highly capacitive or relatively low-impedance loads.
- Inputs are TTL-voltage compatible and accept voltages up to 5.5V.
- Provides high-speed performance with a maximum propagation delay of 9.5ns at 5V.
Applications
- Parallel data storage
- Digital bus buffer
Procurement Notes
Verify the specific package variant (TSSOP, VSSOP, or WQFN) required for the design, as the base part number covers multiple options. Confirm AEC-Q100 qualification status aligns with automotive reliability requirements. Ensure supply voltage constraints between 4.5V and 5.5V are strictly maintained during operation.
Selection Notes
Select this component when designing systems requiring octal latching with high drive capability for buses or long traces. The 3-state output allows easy integration into bus-organized systems without additional interface components. Verify that the load capacitance remains within recommended limits to maintain specified timing characteristics.
Part Context
This device belongs to the SN74ACT573-Q1 family of automotive octal D-type transparent latches. It shares functional similarities with other members like the SN74AC573QPWRQ1 but is optimized for 5V operation with specific ACT-series electrical characteristics. The 'Q1' suffix denotes automotive qualification.
Replacement Considerations
Catalog version SN74ACT573 serves as a non-automotive equivalent. Military grade SN54ACT573 is available for defense applications. Direct pin-compatible replacements within the same family should be verified against specific thermal and electrical parameter requirements.
