Product Overview: 74HC161N by NXP

The 74HC161N is a high-speed Si-gate CMOS device manufactured by NXP Semiconductors, designed to operate at the same level of performance as its counterpart in the LSTTL family. This integrated circuit is part of the 74HC/HCT series and is particularly known for its robustness and versatility in a wide range of digital applications.

Key Features

• Logic Type: 4-bit binary counter
• Operating Voltage: 2 V to 6 V
• Counting Sequence: Up
• Output Current: -5.2 mA / 5.2 mA
• Propagation Delay Time: 16 ns at 6 V
• Package: DIP-16 (Dual In-line Package)
• Mounting Type: Through Hole

Functional Description

The 74HC161N is a presettable synchronous 4-bit binary counter which features an internal look-ahead carry. Synchronous operation is provided by having all flip-flops clocked simultaneously on the positive-going edge of the clock (CP). The device can be cleared at any time by the asynchronous master reset input (MR); it also has two asynchronous set/reset inputs (PE, TE).

The counter advances on the edge of the clock while the clock enable signal (CE) is held low. The carry look-ahead circuitry provides for cascading counters for n-bit synchronous applications without additional gating. When the clock enable (CE) and the load (LD) inputs are both low, the counter loads the 4-bit data set up at the data inputs (D0 to D3).

Applications

With its fast response time and high reliability, the 74HC161N is suitable for use in a variety of applications, including:

• Counters and dividers
• Frequency dividers
• Time-delay circuits
• Control counters for microprocessor systems

The 74HC161N is a testament to NXP's commitment to providing high-quality, reliable components for the electronics industry. Its standard DIP-16 package ensures easy integration into circuit boards, making it a go-to choice for engineers and designers looking for a dependable binary counter solution.