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Product Detailed Parameters
- Description：54HC688 8-BIT IDENTITY COMPARATO
- Series：*
- Mfr：Texas Instruments
- Package：Bulk
- Type：-
- Number of Bits：-
- Output：-
- Output Function：-
- Voltage - Supply：-
- Current - Output High, Low：-
- Max Propagation Delay @ V, Max CL：-
- Current - Quiescent (Iq)：-
- Operating Temperature：-
- Package / Case：-
- Supplier Device Package：-
- Mounting Type：-
- Grade：-
- Qualification：-
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Overview
The SNJ54HC688FK is an 8-bit identity comparator manufactured by Texas Instruments. It compares two 8-bit binary or BCD words and provides a single bit output indicating equality. The device operates within a wide voltage range of 2 V to 6 V and features low power consumption with a maximum supply current of 80 µA. It includes an output enable (OE) input to force outputs high. Designed for military applications, it supports an operational temperature range from -55°C to 125°C and utilizes CMOS technology.
Feature Summary
- Compares two 8-bit binary or BCD words for identity
- Wide operating voltage range supporting 2 V to 6 V
- Low power consumption with minimal supply current
- Military-grade reliability for harsh environments
Applications
- Military electronic systems requiring high reliability
- Industrial control systems operating in extreme temperatures
- Data acquisition systems needing precise word comparison
- Automotive electronics subject to wide voltage fluctuations
Procurement Notes
Verify the complete part number SNJ54HC688FK to ensure military grade specifications are met. Confirm the FK package type matches your PCB footprint requirements. Check the operational temperature range suitability for your specific environment. Ensure compatibility with your system's voltage levels between 2 V and 6 V. Review datasheet details for pin configuration and electrical characteristics before integration.
Selection Notes
Select this component when comparing 8-bit data words in demanding environments. It is suitable for applications requiring wide voltage operation and low power. Consider its military rating for long-term reliability needs. Ensure the package style fits your assembly process. Verify that the single bit output logic meets your design requirements.
Part Context
This part belongs to the SN54HC688 series of 8-bit identity comparators. It shares functional similarities with other HC series devices but offers military-grade performance. The SNJ prefix indicates military qualification. It complements other logic components in complex digital systems requiring reliable data comparison under stress.
Replacement Considerations
Check for SN54HC688 variants with different package options if FK is unavailable. Verify equivalent parts from other manufacturers meet the same military and electrical standards. Ensure pin compatibility and voltage ranges match before substitution.
