CD74HC161E

Product Overview

• Category: Integrated Circuit (IC)
• Use: Counter
• Characteristics: High-speed, synchronous, 4-bit binary counter
• Package: DIP (Dual In-line Package)
• Essence: The CD74HC161E is a versatile counter IC that can be used in various applications requiring counting functionality.
• Packaging/Quantity: Available in tubes or reels, with varying quantities depending on the supplier.

Specifications

• Supply Voltage: 2V to 6V
• Operating Temperature Range: -55°C to +125°C
• Logic Family: HC (High-Speed CMOS)
• Number of Bits: 4
• Clock Signal: Synchronous
• Counting Mode: Binary
• Maximum Clock Frequency: 25 MHz
• Output Type: TTL (Transistor-Transistor Logic)
• Propagation Delay: 13 ns (typical)

Detailed Pin Configuration

The CD74HC161E has a total of 16 pins, each serving a specific function. Here is the detailed pin configuration:

1. CLR (Clear Input)
2. CLK (Clock Input)
3. LOAD (Load Input)
4. A (Binary Input)
5. B (Binary Input)
6. C (Binary Input)
7. D (Binary Input)
8. GND (Ground)
9. QD (Output)
10. QC (Output)
11. QB (Output)
12. QA (Output)
13. RC (Ripple Carry Output)
14. ENT (Enable Count Input)
15. VCC (Positive Power Supply)
16. MR (Master Reset Input)

Functional Features

• Synchronous Operation: The CD74HC161E operates synchronously with the clock signal, ensuring accurate and reliable counting.
• Binary Counting: It counts in binary, allowing for a wide range of counting applications.
• Clear and Reset Functionality: The CLR and MR inputs provide the ability to clear or reset the counter to its initial state.
• Parallel Load Capability: The LOAD input allows for parallel loading of a specific count value into the counter.
• Ripple Carry Output: The RC output provides a carry signal that can be cascaded with other counters for extended counting capabilities.

Advantages and Disadvantages

Advantages: - High-speed operation - Wide operating voltage range - Versatile counting functionality - Compact DIP package for easy integration - Low power consumption

Disadvantages: - Limited number of bits (4-bit) - Not suitable for applications requiring higher bit counts - Propagation delay may affect timing-sensitive applications

Working Principles

The CD74HC161E operates based on synchronous binary counting principles. It utilizes flip-flops and logic gates to increment the count value on each rising edge of the clock signal. The counter can be cleared or reset using the CLR or MR inputs, respectively. The LOAD input allows for parallel loading of a specific count value. The RC output provides a carry signal that can be used to cascade multiple counters for extended counting capabilities.

Detailed Application Field Plans

The CD74HC161E can be used in various applications that require counting functionality, such as:

1. Digital frequency dividers
2. Event counters
3. Timers and clocks
4. Industrial automation systems
5. Robotics
6. Data communication equipment
7. Automotive electronics
8. Consumer electronics

Detailed and Complete Alternative Models

Here are some alternative models that offer similar functionality to the CD74HC161E:

1. SN74HC161 - Texas Instruments
2. MC74HC161 - ON Semiconductor
3. 74HCT161 - NXP Semiconductors
4. CD40161B - Texas Instruments
5. 74LS161 - Fairchild Semiconductor

These alternative models provide similar features and can be used as replacements for the CD74HC161E in various applications.

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