CD74AC161M96E4

The CD74AC161M96E4 is a high-speed synchronous 4-bit binary counter manufactured by Texas Instruments. It is part of the CD74AC family, which is known for its advanced CMOS technology, providing low power consumption and high-speed operation. Here’s a detailed description of its features and specifications:

General Features:

• Functionality: The CD74AC161 is a synchronous counter that counts in binary from 0 to 15 (4 bits). It can be configured for various counting modes, including up, down, and preset modes.
• Synchronous Operation: All flip-flops in the counter are clocked simultaneously, which allows for predictable timing and reduces the risk of glitches that can occur in asynchronous designs.
• Preset Capability: The counter can be preset to a specific value, allowing for flexible operation in various applications.
• Active Low Control Inputs: The counter features control inputs such as Load (LD), Enable Count (ENP), and Clear (CLR), which are active low, providing straightforward control over the counting operation.

Electrical Characteristics:

• Supply Voltage: The device operates typically at a supply voltage of 3V to 5.5V, making it compatible with a wide range of digital logic levels.
• Propagation Delay: The typical propagation delay from the clock input to the output is very low, typically around 5 ns at 5V, which allows for high-speed applications.
• Power Consumption: The CD74AC161 is designed for low power consumption, making it suitable for battery-operated devices and energy-efficient designs.

Pin Configuration:

• The CD74AC161 is available in a 16-pin Dual In-line Package (DIP) or surface mount configurations. The pins include:
  • Clock (CLK): The input for the clock signal.
  • Clear (CLR): Resets the counter to zero when activated.
  • Load (LD): Loads a preset value into the counter when activated.
  • Enable Count (ENP): Allows counting when activated.
  • Outputs (Q0 to Q3): The binary output representing the current count value.

Applications:

• The CD74AC161 is widely used in digital applications such as frequency counters, timers, and event counters. Its synchronous design makes it ideal for use in high-speed digital circuits where precise timing is crucial.

Packaging:

• The "M96" in the part number indicates that the device is available in a specific package type, and "E4" signifies that it is RoHS compliant, meaning it is free from hazardous substances.

In summary, the CD74AC161M96E4 from Texas Instruments is a versatile and efficient 4-bit synchronous counter suitable for a variety of digital applications, offering high-speed performance and low power consumption in a compact package.