MC74ACT161DR2G

Product Overview

• Category: Integrated Circuit (IC)
• Use: Digital Counter
• Characteristics: High-speed, synchronous, 4-bit binary counter
• Package: SOIC-16
• Essence: Counting and sequencing digital signals
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 2.0V to 6.0V
• Operating Temperature Range: -40°C to +85°C
• Maximum Clock Frequency: 100MHz
• Number of Counting Stages: 4
• Output Type: Standard
• Logic Family: ACT
• Mounting Style: Surface Mount
• RoHS Compliant: Yes

Detailed Pin Configuration

The MC74ACT161DR2G has a total of 16 pins arranged as follows:

1. Clock Enable (CE)
2. Parallel Load (PL)
3. Data Inputs (D0-D3)
4. Carry Out (CO)
5. Down/Up (D/U)
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 (Power)

Functional Features

• Synchronous operation with a common clock signal
• Can count up or down based on the D/U input
• Parallel load capability for presetting the counter value
• Carry input and output for cascading multiple counters
• Reset function to clear the counter to zero
• Outputs can drive standard TTL or CMOS logic levels

Advantages and Disadvantages

Advantages: - High-speed operation allows for efficient counting in various applications - Synchronous design ensures accurate and reliable counting - Versatile functionality with up/down counting and parallel loading capabilities - Can be easily cascaded for larger counter configurations

Disadvantages: - Limited to 4-bit counting, may not be suitable for applications requiring higher bit counts - Requires an external clock signal for operation

Working Principles

The MC74ACT161DR2G is a synchronous 4-bit binary counter that operates based on a common clock signal. The counter can count up or down depending on the state of the D/U input. When the D/U input is high, the counter counts up, and when it is low, the counter counts down.

The counter has a parallel load capability, allowing the user to preset the counter value by applying the desired binary inputs (D0-D3) and asserting the parallel load (PL) signal. This feature is useful for initializing the counter to a specific value.

The carry input (CI) and carry output (CO) pins enable cascading multiple counters to create larger counting configurations. The reset (R) input allows the counter to be cleared to zero.

Detailed Application Field Plans

The MC74ACT161DR2G is commonly used in various digital applications that require counting and sequencing of digital signals. Some of the application fields where this IC finds utility include:

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

Detailed and Complete Alternative Models

1. SN74LS161N: 4-bit synchronous binary counter with similar specifications and pin configuration.
2. CD40161BE: CMOS 4-bit synchronous binary counter with parallel load capability.
3. 74HC161: High-speed CMOS 4-bit synchronous binary counter with asynchronous reset.

These alternative models offer similar functionality and can be used as substitutes for the MC74ACT161DR2G in various applications.

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