Texas Instruments

SN54LS161AJ

SN54LS161AJ Description

The SN54LS161AJ from Texas Instruments is a high-performance synchronous 4-bit binary counter designed for precision timing and counting applications. Operating within a 4.5V to 5.5V supply range, this device is part of the 54LS series, renowned for its reliability in industrial and military environments. The counter features a 32 MHz count rate, positive-edge triggering, and synchronous operation, ensuring accurate and synchronized counting. Its asynchronous reset capability allows immediate clearing of the counter, while the up-counting direction simplifies sequential logic designs. Packaged in a 16-CD (Ceramic DIP) tube, it is ideal for through-hole mounting in rugged applications.

SN54LS161AJ Features

• 4-bit synchronous binary counter with up-counting direction.
• High-speed operation at 32 MHz, suitable for time-critical applications.
• Positive-edge triggered for precise timing control.
• Asynchronous reset for immediate counter clearing.
• Wide voltage range (4.5V–5.5V), compatible with TTL logic levels.
• Military-grade reliability (54LS series), ensuring robustness in harsh conditions.
• ROHS3 compliant and REACH unaffected, meeting environmental standards.
• Not moisture-sensitive (MSL: N/A), suitable for long-term storage.

SN54LS161AJ Applications

The SN54LS161AJ excels in applications requiring high-speed counting and timing precision, such as:

• Frequency dividers in communication systems.
• Digital clocks and timers for industrial automation.
• Sequence generators in test and measurement equipment.
• Address counters in memory systems.
• Control logic in military and aerospace electronics.
  Its synchronous operation and asynchronous reset make it ideal for systems needing deterministic behavior and quick reinitialization.

Conclusion of SN54LS161AJ

The SN54LS161AJ stands out as a versatile, high-speed 4-bit counter with military-grade durability and synchronous precision. Its 32 MHz performance, asynchronous reset, and wide voltage tolerance make it a preferred choice for demanding industrial, communication, and aerospace applications. Engineers favor this IC for its reliability, compliance with environmental standards, and ease of integration into legacy through-hole designs. For robust counting solutions, the SN54LS161AJ delivers unmatched performance.