SNJ54LS169BFK

Counter Dividers Overview

The SNJ54LS169BFK is a synchronous 4-bit up/down binary counter manufactured by Texas Instruments. It operates within an extended temperature range of -55°C to 125°C and utilizes a 20-pin Leadless Ceramic Chip Carrier (LCCC) package with a 1.27 mm pitch. The device functions as a bidirectional counter, supporting both increment and decrement operations synchronized by a clock signal.

Counter Dividers Feature Summary

• Synchronous operation ensures all flip-flops change state simultaneously upon the active clock edge.
• Bidirectional counting capability allows for both up-counting and down-counting sequences.
• Military-grade construction provides reliability in extreme environmental conditions.

Counter Dividers Applications

• Military and defense electronic systems
• Aerospace instrumentation counters
• High-reliability industrial control logic

Counter Dividers Procurement Notes

Verify that the specific orderable part number matches the required LCCC-20 package configuration. Confirm the military qualification status aligns with project specifications. Ensure compatibility with the specified -55°C to 125°C operating temperature range during system design validation.

Counter Dividers Selection Notes

Select this component when a synchronous 4-bit binary counter is required for harsh environments. The LCCC package offers hermetic sealing suitable for space or high-vibration applications. Consider the LS series propagation characteristics against system timing requirements.

Counter Dividers Part Context

This device belongs to the SN54LS169B family of synchronous counters. It shares functional similarities with the SN54S169 but differs in speed and power consumption profiles typical of the Low-power Schottky logic family. The 'J' suffix variants indicate ceramic DIP packages, while 'W' indicates flatpack options.

Counter Dividers Replacement Considerations

SNJ54LS169BJ

Counter Dividers FAQ

What is the primary difference between the SNJ54LS169BFK and commercial versions?

The SNJ54LS169BFK is qualified for military applications and supports an extended temperature range of -55°C to 125°C, whereas commercial versions typically operate from 0°C to 70°C.

Does the SNJ54LS169BFK support asynchronous reset?

The datasheet describes it as a synchronous counter; specific reset functionality details require consulting the full electrical characteristics table in the SDLS134 datasheet.