SNJ54LS390J

Description：DUAL 4-BIT DECADE AND BINARY COU
Series：54LS
Mfr：Texas Instruments
Package：Tube

SKU:2fb8fe2a7d4d Category: Counters, Dividers Brand: Texas Instruments

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Product introduction

SNJ54LS390J is listed in the Counter Dividers range at ChipApex. The manufacturer field lists Texas Instruments. Its product description is DUAL 4-BIT DECADE AND BINARY COU. Review the specifications below when checking this part for your BOM.

Counter Dividers specifications for SNJ54LS390J

Description：DUAL 4-BIT DECADE AND BINARY COU
Series：54LS
Mfr：Texas Instruments
Package：Tube
Logic Type：Counter, Decade
Direction：Up
Number of Elements：2
Number of Bits per Element：4
Reset：Asynchronous
Timing：-
Count Rate：35 MHz
Trigger Type：Negative Edge
Operating Temperature：-55°C ~ 125°C (TA)
Mounting Type：Through Hole
Package / Case：16-CDIP (0.300", 7.62mm)
Supplier Device Package：16-CDIP
Voltage - Supply：4.5 V ~ 5.5 V
Grade：-
Qualification：-

Counter Dividers datasheet and documents for SNJ54LS390J

SNJ54LS390J

Counter Dividers Overview

The SNJ54LS390J is a military-grade dual 4-bit decade and binary counter from the Texas Instruments SN54LS390 family. It operates within an extended temperature range of -55°C to +125°C and utilizes a hermetically sealed ceramic dual in-line package (CDIP) with 16 pins. The device supports asynchronous counting modes, providing both divide-by-two and divide-by-five functions for sequential logic applications.

Counter Dividers Feature Summary

Dual independent counters integrated into a single unit
Asynchronous operation for flexible clocking configurations
Hermetically sealed ceramic construction for environmental protection

Counter Dividers Applications

Military and defense electronic systems
Space-based application circuits
High-reliability industrial control equipment

Counter Dividers Procurement Notes

Verify that the component matches the specific SNJ54LS390J designation to ensure it meets military specifications. Confirm the CDIP-16 package type and hermetic seal integrity are required for the target environment. Check for RoHS exemption status as indicated by the 'No' value in official documentation.

Counter Dividers Selection Notes

Select this part when radiation tolerance or extreme temperature stability is critical. The SNJ54LS390J differs from commercial variants by its wider operating temperature range and robust packaging. Ensure the design accommodates the asynchronous nature of the internal flip-flops.

Counter Dividers Part Context

This component belongs to the SN54LS390 series, which includes dual 4-bit decade and binary counters. The 'SNJ' prefix denotes a military-grade version manufactured by Texas Instruments. It is distinct from the SN74LS390 commercial counterpart due to its enhanced reliability standards and packaging.

Counter Dividers Replacement Considerations

SNJ54LS390W (Ceramic Flat Pack)

Counter Dividers FAQ

What is the primary difference between SNJ54LS390J and SN74LS390N?

The SNJ54LS390J is a military-grade device with a wider temperature range (-55°C to +125°C) and hermetic ceramic packaging, whereas the SN74LS390N is a commercial-grade device with a narrower temperature range (0°C to 70°C) and plastic packaging.