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Product Detailed Parameters
- Description：D LATCH, 1-FUNC, 8-BIT
- Series：*
- Mfr：Texas Instruments
- Package：Bulk
- Logic Type：-
- Circuit：-
- Output Type：-
- Voltage - Supply：-
- Independent Circuits：-
- Delay Time - Propagation：-
- Current - Output High, Low：-
- Operating Temperature：-
- Mounting Type：-
- Package / Case：-
- Supplier Device Package：-
- Grade：-
- Qualification：-
Download product information
Overview
The SNJ54HC533FK is an octal D-type latch manufactured by Texas Instruments. It features eight independent D-latches with three-state outputs, housed in a 20-lead Ceramic Quad Flat Package (CQCC). The device operates within a supply voltage range of 2V to 6V and supports a wide temperature range from -55°C to 125°C. It belongs to the HC/UH logic family, providing high-speed operation and low power consumption suitable for military and aerospace applications requiring robust performance.
Feature Summary
- Octal configuration with eight independent D-latches
- Three-state output capability for bus-oriented designs
- Wide operating temperature range suitable for harsh environments
- Ceramic package construction for enhanced reliability
Applications
- Military and aerospace data storage systems
- Bus-oriented memory register architectures
- High-reliability industrial control interfaces
- Aerospace telemetry signal latching
Procurement Notes
Verify the specific suffix 'FK' indicates the ceramic quad flat pack variant. Confirm RoHS compliance status as military-grade parts may differ from commercial standards. Ensure the supplier provides traceability documentation required for defense or space applications. Check for lead time constraints associated with specialized packaging.
Selection Notes
Select this component when eight synchronized latches with tri-state outputs are required. Consider the HC series speed and power characteristics against standard TTL or CMOS alternatives. Evaluate the ceramic package benefits for thermal cycling resistance compared to plastic variants. Ensure supply voltage compatibility with the system's 2V to 6V operational window.
Part Context
This part belongs to the SNJ54HCxx series, representing the military-grade version of the 74HC logic family. The SNJ prefix denotes ceramic packaging, distinguishing it from plastic-packaged commercial equivalents like the SN74HC533. This series is designed for applications demanding higher radiation tolerance and broader temperature stability than standard consumer electronics components.
Replacement Considerations
Direct substitutes include other SNJ54HC533 variants with different suffixes indicating package or temperature variations. Verify pinout compatibility before replacing with generic 74HC533 ICs, as electrical specifications may differ for military-grade parts.
