Texas Instruments

SN74HC161D

SN74HC161D Description

The SN74HC161D from Texas Instruments is a 4-bit synchronous binary counter designed for high-speed digital applications. Operating within a 2V to 6V supply range, this IC delivers reliable performance with a maximum count rate of 36 MHz, making it suitable for timing and frequency division tasks. Housed in a 16-pin SOIC package, it features synchronous counting with positive-edge triggering, ensuring precise timing control. The device includes an asynchronous reset function, allowing immediate counter clearing independent of the clock. Its up-counting direction and low-power CMOS technology make it ideal for battery-operated and power-sensitive designs.

SN74HC161D Features

• 4-bit binary counter with synchronous operation for precise timing.
• High-speed performance: 36 MHz count rate ensures efficiency in fast digital systems.
• Wide voltage range (2V–6V), compatible with TTL and CMOS logic levels.
• Asynchronous reset for immediate counter initialization.
• Positive-edge triggered clocking for reliable state transitions.
• ROHS3 compliant and REACH unaffected, meeting environmental standards.
• Surface-mount (SOIC-16) packaging, suitable for compact PCB designs.
• Low power consumption typical of HC-series logic, ideal for portable electronics.

SN74HC161D Applications

The SN74HC161D excels in applications requiring high-speed counting and frequency division, such as:

• Digital clocks and timers for event sequencing.
• Frequency synthesizers in communication systems.
• Industrial control systems for pulse generation and synchronization.
• Embedded systems where precise timing and low power are critical.
• Automotive electronics due to its robust voltage range and reliability.

Conclusion of SN74HC161D

The SN74HC161D stands out as a versatile, high-performance binary counter, combining speed, low power, and synchronous operation in a compact package. Its asynchronous reset and wide voltage compatibility make it superior to basic counters, while its 36 MHz capability ensures it meets the demands of modern digital designs. Though classified as Last Time Buy, it remains a dependable choice for legacy and new projects requiring precise counting logic. Engineers can leverage its features in timing, control, and communication systems where reliability and efficiency are paramount.