MC74ACT161DG

Overview

• Category: Integrated Circuit
• Use: Digital Counter
• Characteristics: High-speed, low-power consumption
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: 4-bit synchronous binary counter
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage: 2.0V to 6.0V
• Operating Temperature Range: -55°C to +125°C
• Maximum Clock Frequency: 100MHz
• Number of Counting Stages: 4
• Output Type: Synchronous

Pin Configuration

The MC74ACT161DG 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. Down/Up (DU)
6. Clock (CLK)
7. Reset (R)
8. Carry In (CI)
9. Q0 Output
10. Q1 Output
11. Q2 Output
12. Q3 Output
13. GND (Ground)
14. Q3' Output
15. Q2' Output
16. VCC (Supply Voltage)

Functional Features

• Synchronous operation with clock enable and parallel load control
• Up or down counting mode selectable through the DU input
• Asynchronous reset capability
• Carry-in and carry-out for cascading multiple counters
• High-speed operation with minimal power consumption
• Schmitt-trigger inputs for noise immunity

Advantages and Disadvantages

Advantages: - High-speed operation allows for efficient counting in various applications - Low-power consumption makes it suitable for battery-powered devices - Versatile functionality with selectable counting modes and asynchronous reset capability - Noise immunity provided by Schmitt-trigger inputs ensures reliable operation

Disadvantages: - Limited number of counting stages (4) may not be sufficient for certain applications requiring higher bit counts - Availability and pricing may vary depending on the supplier and market demand

Working Principles

The MC74ACT161DG is a 4-bit synchronous binary counter. It operates based on the input clock signal, which triggers the counting process. The DU input determines whether the counter counts up or down. The PL input allows for parallel loading of data into the counter. The CE input enables or disables the clock input, controlling the counting operation.

The counter has an asynchronous reset capability, which allows for immediate resetting of the count to zero. The carry-in and carry-out pins enable cascading multiple counters to achieve higher bit counts.

Detailed Application Field Plans

The MC74ACT161DG is widely used in various digital applications that require counting functionality. Some of the common application fields include:

1. Digital frequency dividers
2. Event counters
3. Timekeeping circuits
4. Industrial automation systems
5. Communication equipment
6. Automotive electronics
7. Consumer electronics

Detailed and Complete Alternative Models

1. SN74LS161N: 4-bit synchronous binary counter with similar specifications and functionality.
2. CD40161BE: CMOS 4-bit synchronous binary counter with comparable characteristics.
3. 74HC161D: High-speed CMOS 4-bit synchronous binary counter with additional features.

These alternative models offer similar functionality and can be considered as substitutes for the MC74ACT161DG in various applications.

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