SNJ54HC259J

Overview

The SNJ54HC259J is an 8-bit addressable latch from the Texas Instruments SN54HC259 family, housed in a 16-pin ceramic dual in-line package (CDIP). It operates within a supply voltage range of 2 V to 6 V and supports an operating temperature range of -55°C to 125°C. The device features high-current outputs capable of driving up to 10 LSTTL loads, with typical propagation delays of 14 ns. Key electrical characteristics include a maximum static current of 80 μA and output drive capabilities of ±4 mA at 5 V.

Feature Summary

• Performs serial-to-parallel conversion by storing single-line data across eight individually addressable latches.
• Functions as a 1-of-8 decoder or demultiplexer with active-high outputs for signal routing.
• Includes asynchronous parallel clear functionality to reset all outputs simultaneously.
• Features an enable input that simplifies system expansion for applications requiring more than eight bits.

Applications

• General-purpose storage registers in digital systems
• Serial-holding registers for data buffering
• Active-high decoders or demultiplexers

Procurement Notes

Verify the specific ordering suffix 'J' corresponds to the CDIP package variant when sourcing. Confirm military-grade qualification requirements if applicable, as this part belongs to the SN54 series. Ensure compatibility with existing board layouts designed for 16-pin ceramic packages before procurement.

Selection Notes

Select this component for designs requiring wide temperature operation down to -55°C. The HC logic family offers low power consumption suitable for battery-operated or energy-efficient systems. Verify that the required output drive current aligns with the load specifications, particularly when interfacing with LSTTL circuits.

Part Context

This device is part of the SN54HC259 family, which includes variants like SN74HC259 for commercial use. The SN54 series is typically designated for military and defense applications, offering extended temperature ranges compared to standard catalog parts. It shares functional similarities with other addressable latches but is distinguished by its specific packaging and environmental ratings.

Replacement Considerations

SN54HC259J