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Product Detailed Parameters
- Description：4-BIT BINARY COUNTER 14-CDIP -55
- Series：54LS
- Mfr：Texas Instruments
- Package：Tube
- Logic Type：Binary Counter
- Direction：Up
- Number of Elements：1
- Number of Bits per Element：4
- Reset：Asynchronous
- Timing：-
- Count Rate：32 MHz
- Trigger Type：Negative Edge
- Operating Temperature：-55°C ~ 125°C (TA)
- Mounting Type：Through Hole
- Package / Case：14-CDIP (0.300", 7.62mm)
- Supplier Device Package：14-CDIP
- Voltage - Supply：4.5 V ~ 5.5 V
- Grade：-
- Qualification：-
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Overview
The SNJ54LS93J is a hermetically sealed binary counter in the LS series, housed in a 14-pin ceramic dual in-line package (CDIP). It operates asynchronously with negative-edge triggering and supports an up-counting direction. The device functions as a divide-by-eight binary counter or can be configured for other counting modes. It is rated for military-grade performance with an operating temperature range of -55°C to +125°C.
Feature Summary
- Hermetically sealed ceramic construction for environmental protection
- Asynchronous negative-edge triggered operation
- Military-grade reliability and extended temperature capability
Applications
- Military and defense electronic systems
- Aerospace instrumentation requiring radiation-hardened components
- High-reliability industrial control logic circuits
Procurement Notes
Verify that the specific orderable part number matches the required package variant, such as CDIP or CFP, as availability varies by configuration. Confirm RoHS status and lead finish specifications against project requirements. Ensure the component meets QML certification standards if mandated for the intended application environment.
Selection Notes
Select this component when military-grade durability and hermetic sealing are mandatory. The LS series offers standard TTL compatibility while maintaining low power consumption. Consider the CDIP package for through-hole mounting in ruggedized enclosures where thermal cycling resistance is critical.
Part Context
This part belongs to the Texas Instruments SN54LS93 family of decade, divide-by-twelve, and binary counters. The 'SNJ' prefix indicates a military-qualified version manufactured in a ceramic package. It shares functional characteristics with commercial variants but adheres to stricter manufacturing and testing protocols defined by MIL-STD-38510.
Replacement Considerations
Direct substitutes include SNJ54LS93W in a ceramic flat pack and JM38510/31502BCA variants. Commercial equivalents like SN74LS93N lack hermetic sealing and military temperature ratings.
