SNJ54HC165FK

Overview

The SNJ54HC165FK is an 8-bit parallel-load shift register manufactured by Texas Instruments. It operates within a wide voltage range of 2 V to 6 V and supports clock frequencies up to 21 MHz. The device features complementary push-pull outputs capable of driving up to 10 LSTTL loads, with typical propagation delay of 13 ns and maximum supply current of 80 µA. Packaged in a 20-pin LCC (QLCC) format, it functions as a serial/parallel-to-serial converter for data transmission applications.

Feature Summary

• Provides 8-bit parallel-load shifting capability with serial output
• Operates across a wide supply voltage range from 2 V to 6 V
• Features low power consumption with maximum ICC of 80 µA
• Outputs drive up to 10 LSTTL loads with complementary push-pull configuration

Applications

• Serial data transmission systems
• Parallel-to-serial data conversion interfaces
• Digital signal processing input stages
• Microcontroller peripheral expansion

Procurement Notes

Verify the component suffix FK corresponds to the 20-LCCC package and military temperature grade (-55°C to 125°C). Confirm RoHS compliance status as documentation indicates non-compliance. Ensure ordering specifications match the exact SNJ54HC165FK part number to avoid confusion with commercial variants like SN74HC165.

Selection Notes

Select this component when requiring an 8-bit shift register with parallel load functionality in a ceramic leaded chip carrier package. The SNJ54HC165FK is suitable for high-reliability applications due to its extended temperature range. Consider the 2 V to 6 V operating range for compatibility with various logic families.

Part Context

This device belongs to the Texas Instruments 54HC series of high-speed CMOS logic components. The 'SNJ' prefix typically denotes military-grade qualification. As an 8-bit shift register, it complements other logic devices by facilitating data serialization. The LCC package offers robust mechanical stability for demanding environments.

Replacement Considerations

Public confirmed substitutes include SN54HC165FK. Verify pinout compatibility and electrical characteristics before substitution. Commercial equivalents such as SN74HC165 may differ in temperature range and reliability ratings.