CD74HC161MT

Product Overview

• Category: Integrated Circuit
• Use: Counter
• Characteristics: High-Speed, Synchronous, 4-Bit Binary Counter
• Package: TSSOP (Thin Shrink Small Outline Package)
• Essence: The CD74HC161MT is a high-speed synchronous 4-bit binary counter that operates on a wide voltage range. It is commonly used in digital electronics for counting applications.
• Packaging/Quantity: The CD74HC161MT is typically sold in reels or tubes, with a quantity of 2500 units per reel.

Specifications

The CD74HC161MT has the following 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 Current: ±5mA
• Propagation Delay: 13 ns (typical)

Detailed Pin Configuration

The CD74HC161MT has a total of 16 pins, each serving a specific purpose. The pin configuration is as follows:

1. CLR (Clear Input)
2. CLK (Clock Input)
3. LOAD (Load Input)
4. D0 (Data Input 0)
5. D1 (Data Input 1)
6. D2 (Data Input 2)
7. D3 (Data Input 3)
8. GND (Ground)
9. Q0 (Output 0)
10. Q1 (Output 1)
11. Q2 (Output 2)
12. Q3 (Output 3)
13. CARRY OUT (Carry Output)
14. ENABLE (Enable Input)
15. VCC (Positive Power Supply)
16. NC (No Connection)

Functional Features

The CD74HC161MT offers the following functional features:

• Synchronous Operation: The counter operates synchronously with the clock input, ensuring accurate counting.
• Parallel Load: The LOAD input allows for parallel loading of data into the counter.
• Clear Function: The CLR input resets the counter to its initial state.
• Carry Output: The CARRY OUT pin provides a carry signal when the counter reaches its maximum value.

Advantages and Disadvantages

Advantages of the CD74HC161MT include:

• High-speed operation
• Wide voltage range
• Synchronous counting

Disadvantages of the CD74HC161MT include:

• Limited number of counting stages (4 bits)
• Propagation delay may affect timing-sensitive applications

Working Principles

The CD74HC161MT is based on synchronous binary counting principles. It utilizes flip-flops and logic gates to perform the counting operation. The clock input triggers the flip-flops, causing them to change their states and increment the count. The counter can be cleared using the CLR input, and data can be loaded in parallel using the LOAD input.

Detailed Application Field Plans

The CD74HC161MT finds applications in various fields, including:

1. Digital Counters: The CD74HC161MT is commonly used as a building block for digital counters in electronic devices such as frequency dividers, timers, and event counters.
2. Industrial Automation: It can be utilized in industrial automation systems for counting and control purposes.
3. Communication Systems: The CD74HC161MT can be employed in communication systems for data packet counting and synchronization.
4. Automotive Electronics: It finds use in automotive electronics for tasks like mileage calculation and gear position detection.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the CD74HC161MT are:

1. SN74HC161N: This is a DIP (Dual In-line Package) version of the CD74HC161MT.
2. CD40161BE: A 4-bit synchronous binary counter with parallel load capability.
3. MC74HC161AN: Another 4-bit synchronous counter with similar specifications.

These alternative models can be considered based on specific requirements and availability.

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