SN74HC161DT

Product Overview

• Category: Integrated Circuit (IC)
• Use: Counter
• Characteristics: High-speed, synchronous, 4-bit binary counter
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Digital logic circuit for counting and frequency division
• Packaging/Quantity: Tape and reel, 2500 units per reel

Specifications

• Supply Voltage Range: 2V to 6V
• Operating Temperature Range: -40°C to 85°C
• Maximum Clock Frequency: 50 MHz
• Number of Counting Stages: 4
• Output Type: Synchronous
• Reset Function: Asynchronous

Detailed Pin Configuration

The SN74HC161DT has a total of 16 pins. The pin configuration is as follows:

1. Clock Enable (CE)
2. Clock (CP)
3. Parallel Load (PL)
4. Master Reset (MR)
5. Data Inputs (D0)
6. Data Inputs (D1)
7. Data Inputs (D2)
8. Data Inputs (D3)
9. Carry Out (CO)
10. Count Enable (CTEN)
11. Terminal Count (TC)
12. Output (Q0)
13. Output (Q1)
14. Output (Q2)
15. Output (Q3)
16. Ground (GND)

Functional Features

• High-speed operation allows for efficient counting and frequency division.
• Synchronous counting ensures accurate and synchronized output.
• Parallel load capability enables presetting the counter value.
• Asynchronous master reset allows for immediate reset of the counter.
• Carry out signal indicates when the counter reaches its maximum count.

Advantages and Disadvantages

Advantages: - High-speed operation allows for quick counting and frequency division. - Synchronous counting ensures accurate and synchronized output. - Parallel load capability provides flexibility in setting the counter value. - Asynchronous master reset allows for immediate reset of the counter.

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

Working Principles

The SN74HC161DT is a synchronous, 4-bit binary counter. It counts up or down based on the clock input and can be preset to a specific value using the parallel load input. The counter advances on each rising edge of the clock signal when the count enable input is high. When the counter reaches its maximum count, the terminal count output goes high, indicating that the counter has completed a full cycle. The counter can be reset to zero using the master reset input.

Detailed Application Field Plans

The SN74HC161DT is commonly used in various applications, including:

1. Frequency Division: The counter can be used to divide the frequency of an input signal by a specific factor.
2. Event Counting: It can be used to count events or pulses in digital systems.
3. Timekeeping: The counter can be utilized in timekeeping circuits to track elapsed time or generate precise timing signals.
4. Industrial Control: It finds application in industrial control systems for tasks such as monitoring and controlling processes.

Detailed and Complete Alternative Models

Some alternative models to SN74HC161DT include:

1. CD40161BE: 4-bit synchronous binary counter with similar specifications.
2. MC74HC161N: High-speed CMOS logic 4-bit binary counter.
3. 74HCT161: Synchronous presettable 4-bit binary counter.

These alternative models offer similar functionality and can be used as replacements depending on specific requirements.

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