CD74AC161E

Product Overview

• Category: Integrated Circuit
• Use: Counter
• Characteristics: High-speed, synchronous, 4-bit binary counter
• Package: DIP (Dual In-line Package)
• Essence: Digital logic circuit
• Packaging/Quantity: Typically sold in reels or tubes containing multiple units

Specifications

• Supply Voltage: 2V to 6V
• Operating Temperature Range: -40°C to +85°C
• Maximum Clock Frequency: 100 MHz
• Number of Counting Stages: 4
• Output Type: Synchronous
• Reset Function: Yes

Detailed Pin Configuration

The CD74AC161E has a total of 16 pins. The pin configuration is as follows:

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

Functional Features

• High-speed operation allows for efficient counting.
• Synchronous design ensures accurate and reliable counting.
• Can be used as a modulo-N counter by connecting the appropriate outputs to the reset inputs.
• Parallel load capability enables presetting the counter value.
• Carry input and output facilitate cascading multiple counters.

Advantages and Disadvantages

Advantages: - High-speed operation allows for quick counting applications. - Synchronous design ensures accurate and reliable counting. - Versatile functionality with parallel load and carry features. - Can be easily cascaded with other counters.

Disadvantages: - Limited number of counting stages (4 bits). - Requires external clock signal for operation.

Working Principles

The CD74AC161E is a synchronous 4-bit binary counter. It counts up or down based on the input provided to the Down/Up pin (D/U). The counter advances on each rising edge of the clock signal (CLK) when the Clock Enable (CE) is active. The counter can be preset to a specific value using the Parallel Load (PL) pin. The Carry In (CI) and Carry Out (CO) pins allow for cascading multiple counters.

Detailed Application Field Plans

The CD74AC161E can be used in various applications that require counting functionality, such as:

1. Digital frequency dividers
2. Event counters
3. Time delay circuits
4. Industrial automation systems
5. Traffic light control systems
6. Electronic gaming devices

Detailed and Complete Alternative Models

1. CD74AC163E: 4-bit synchronous binary counter with asynchronous reset.
2. CD74AC162E: 4-bit synchronous binary counter with parallel load capability.
3. CD74AC160E: 4-bit synchronous decade counter.

These alternative models offer similar functionality but may have additional features or different pin configurations.

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