SNJ54HC393J

Counter Dividers Overview

The SNJ54HC393J is a military-grade dual 4-bit binary counter from the Texas Instruments HC series, housed in a 14-pin ceramic dual in-line package (CDIP). It integrates two independent counters with individual clock and direct clear inputs. The device operates within a supply voltage range of 2V to 6V and supports an operating temperature range of -55°C to 125°C. Key electrical characteristics include a maximum input clamp current of ±20 mA, a typical propagation delay of 13ns at 5V, and low power consumption with a maximum ICC of 80μA.

Counter Dividers Feature Summary

• Integrates two independent 4-bit binary counters within a single package to reduce system density requirements.
• Features individual clock and direct clear inputs for each counter stage.
• Provides parallel outputs from each counter stage to generate submultiples of the input count frequency.

Counter Dividers Applications

• Military and defense electronic systems requiring radiation-hardened or high-reliability logic components.
• Aerospace timing circuits utilizing the capability to implement divide-by-256 functions.
• Industrial control systems operating in extreme environmental conditions.

Counter Dividers Procurement Notes

Verify that the component matches the specific SNJ54HC393J part number, as the 'J' suffix denotes the hermetic CDIP package required for military specifications. Confirm the manufacturer is Texas Instruments and check for QML certification markings if the application demands strict military compliance. Ensure the device is sourced from authorized distributors to avoid counterfeit parts, particularly given the specialized packaging.

Counter Dividers Selection Notes

Select this component when a hermetic ceramic package is mandatory for environmental protection or reliability standards. The HC series offers CMOS compatibility with TTL loads, making it suitable for mixed-technology interfaces. Consider the wide operating voltage range and extended temperature capabilities compared to standard commercial variants. Verify that the 14-pin CDIP footprint aligns with the existing PCB layout constraints.

Counter Dividers Part Context

This device belongs to the SN54HC393 family, which includes commercial (SN74HC393) and military (SN54HC393) versions. The SNJ variant specifically refers to the ceramic DIP package option. It is part of the broader HC logic family, designed for low power and high noise immunity applications. Other package options for this function include CFP, LCCC, and various plastic surface-mount packages.

Counter Dividers Replacement Considerations

SN54HC393J

Counter Dividers FAQ

What is the maximum supply voltage for the SNJ54HC393J?

The absolute maximum supply voltage rating is 7V, while the recommended operating range is 2V to 6V.

How many flip-flops are contained in the SNJ54HC393J?

The device contains eight flip-flops configured to implement two individual 4-bit counters.