CD74ACT161E

Product Overview

• Category: Integrated Circuit
• Use: Counter
• Characteristics: High-speed, synchronous, 4-bit binary counter
• Package: DIP (Dual In-line Package)
• Essence: The CD74ACT161E is a versatile counter IC that can be used in various applications requiring counting functionality.
• Packaging/Quantity: Available in tubes or reels, with varying quantities depending on the supplier.

Specifications

• Supply Voltage: 2V to 6V
• Operating Temperature Range: -40°C to +85°C
• Logic Family: ACT
• Number of Bits: 4
• Clock Input: Synchronous
• Output Type: Parallel
• Propagation Delay: 5 ns (typical)

Detailed Pin Configuration

The CD74ACT161E has a total of 16 pins. Here is the detailed pin configuration:

1. Clock Enable (CE)
2. Clock (CLK)
3. Parallel Load (PL)
4. Down/Up (D/U)
5. Carry Out (CO)
6. Data Inputs (D0-D3)
7. Ripple Clock (RC)
8. Carry In (CI)
9. Output Enable (OE)
10. Outputs (Q0-Q3)
11. Ground (GND)
12. VCC (+5V)

Functional Features

• Synchronous Operation: The CD74ACT161E operates synchronously with the clock signal, ensuring accurate and reliable counting.
• Parallel Load: The parallel load feature allows for easy initialization of the counter by loading a specific value into it.
• Down/Up Control: The down/up control input determines whether the counter counts up or down.
• Carry Out: The carry out signal indicates when the counter reaches its maximum value and overflows.
• Output Enable: The output enable input enables or disables the outputs, providing flexibility in controlling the counter's output signals.

Advantages and Disadvantages

Advantages: - High-speed operation - Synchronous counting ensures accuracy - Versatile functionality for various applications - Easy initialization with parallel load feature

Disadvantages: - Limited to 4-bit counting capability - Requires external clock signal for operation

Working Principles

The CD74ACT161E is a synchronous 4-bit binary counter. It counts up or down based on the input control signal (D/U) and the clock signal (CLK). When the counter reaches its maximum value, the carry out (CO) signal is activated, indicating an overflow condition. The counter can be initialized by loading a specific value through the parallel load (PL) input. The outputs (Q0-Q3) represent the current count value.

Detailed Application Field Plans

The CD74ACT161E can be used in various applications that require counting functionality. Some potential application fields include:

1. Digital frequency counters
2. Industrial automation systems
3. Electronic test equipment
4. Communication systems
5. Automotive electronics
6. Robotics

Detailed and Complete Alternative Models

Here are some alternative models that offer similar functionality to the CD74ACT161E:

1. SN74LS161A: 4-bit synchronous binary counter
2. CD40161BE: Presettable 4-bit synchronous binary counter
3. MC14516B: Binary up/down counter with parallel load

These alternative models provide options for different logic families, additional features, and varying specifications to suit specific application requirements.

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