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Product Detailed Parameters
- Description：IC D-TYPE TRANSP SGL 8:8 20CDIP
- Series：54ACT
- Mfr：Texas Instruments
- Package：Tube
- 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：6ns
- Current - Output High, Low：24mA, 24mA
- Operating Temperature：-55°C ~ 125°C
- Mounting Type：Through Hole
- Package / Case：20-CDIP (0.300", 7.62mm)
- Supplier Device Package：20-CDIP
- Grade：-
- Qualification：-
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Overview
The SNJ54ACT573J is a military-grade octal D-type transparent latch with 3-state outputs, manufactured by Texas Instruments. It operates within a supply voltage range of 4.5V to 5.5V and features inputs compatible with TTL voltage levels. The device provides a maximum propagation delay of 9.5ns at 5V. It utilizes a 20-pin Ceramic Dual In-line Package (CDIP) rated for temperatures between -55°C and 125°C.
Feature Summary
- Features 3-state outputs designed for driving highly capacitive or low-impedance loads
- Inputs accept voltages up to the maximum supply voltage limit
- Buffered output-enable input allows placement of outputs in high-impedance state
Applications
- Parallel data storage
- Digital bus buffer
- Bus drivers
Procurement Notes
Verify that the specific ordering suffix 'J' corresponds to the CDIP package variant. Confirm the component meets QML certification requirements for military applications. Ensure the supplier provides documentation verifying the operating temperature range covers the required environmental conditions. Check for RoHS compliance status as indicated in the packaging addendum.
Selection Notes
Select this component when military-grade reliability and wide temperature operation are required. The ACT series offers faster switching speeds compared to standard AC logic. Verify that the 20-pin CDIP footprint matches the PCB layout constraints. Consider the 3-state output capability if bus isolation is necessary for the system design.
Part Context
This part belongs to the SN54ACT573 family, which includes catalog versions like the SN74ACT573. The SNJ54ACT573J specifically denotes the military-rated ceramic dual in-line package variant. Other package options include LCCC and CFP formats within the same functional family.
Replacement Considerations
SNJ54ACT573FK
FAQ
How does the output-enable input affect internal latch operations?
The output-enable input does not affect the internal operations of the latches. Data can be retained or entered while the outputs are in the high-impedance state.
What is the function of the latch-enable input?
When the latch-enable input is high, the outputs follow the data inputs. When taken low, the outputs are latched at the logic levels set up at the data inputs.
