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Product Detailed Parameters
- Description：IC D-TYPE TRANSP SGL 8:8 20CFP
- Series：54AHC
- Mfr：Texas Instruments
- Package：Tube
- Logic Type：D-Type Transparent Latch
- Circuit：8:08
- Output Type：Tri-State, Non-Inverted
- Voltage - Supply：2V ~ 5.5V
- Independent Circuits：1
- Delay Time - Propagation：6.5ns
- Current - Output High, Low：8mA, 8mA
- Operating Temperature：-55°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：20-CFlatPack
- Supplier Device Package：20-CFP
- Grade：-
- Qualification：-
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Overview
The SNJ54AHC573W is an octal transparent D-type latch with 3-state outputs, designed for military-grade applications. It operates within a supply voltage range of 2V to 5.5V and supports a wide operating temperature range from -55°C to +125°C. The device features buffered output-enable (OE) inputs that allow the eight outputs to be placed in a high-impedance state, facilitating direct bus line driving without interface components. Latch-enable (LE) controls data transparency, while OE manages output states independently.
Feature Summary
- Octal transparent D-type latches with 3-state outputs
- Wide operating voltage range from 2V to 5.5V
- Buffered output-enable (OE) input for high-impedance control
- Latch-up performance exceeding 250mA per JESD 17
Applications
- Servers
- PCs and Notebooks
- Network Switches
- Telecom Infrastructures
Procurement Notes
Verify the specific ordering suffix 'W' corresponds to the CFP-20 package configuration required for your design. Confirm compliance with MIL-PRF-38535 standards if applicable, as parameter testing protocols differ for these products compared to commercial variants. Ensure all unused inputs are tied to VCC or GND to prevent undefined operational states during operation.
Selection Notes
Select this component when military-grade reliability and extended temperature ranges are required. The AHC logic family offers low drive characteristics suitable for minimizing output ringing on bus interfaces. Verify that the 20-pin CFP package dimensions fit the available PCB real estate and that the 3-state outputs align with the system's bus architecture requirements.
Part Context
This part belongs to the SNx4AHC573 family of octal transparent D-type latches. The 'SNJ' prefix indicates a military-grade version manufactured under strict quality controls. The 'W' suffix specifically denotes the Ceramic Flat Pack (CFP) package type, distinguishing it from surface-mount alternatives like SSOP or SOIC found in the commercial SN74 series.
Replacement Considerations
Direct replacements include other SNJ54AHC573 variants with different package suffixes such as SNJ54AHC573FK (LCCC) or SNJ54AHC573J (CDIP), provided pin compatibility is maintained. Commercial equivalents like SN74AHC573 may be used if military specifications and temperature ranges are not critical.
