CD74HC192PW

Product Overview

• Category: Integrated Circuit
• Use: Counter/Divider
• Characteristics: High-Speed, CMOS Logic, 4-Bit Synchronous Up/Down Binary Counter
• Package: TSSOP (Thin Shrink Small Outline Package)
• Essence: The CD74HC192PW is a versatile counter/divider integrated circuit that operates at high speeds and utilizes CMOS logic. It is designed to perform 4-bit synchronous up/down counting in various applications.
• Packaging/Quantity: Available in tape and reel packaging with 2500 units per reel.

Specifications

• Supply Voltage Range: 2V to 6V
• Operating Temperature Range: -40°C to +85°C
• Maximum Clock Frequency: 25 MHz
• Number of Counting Modes: 3 (Up, Down, and Up/Down)
• Maximum Counting Range: 16 (2^4) states
• Output Drive Capability: 10 LSTTL Loads
• Propagation Delay: 13 ns (typical)

Detailed Pin Configuration

The CD74HC192PW has a total of 16 pins, each serving a specific function:

1. CP (Clock Pulse): Input pin for clock signal.
2. MR (Master Reset): Active low input pin used to reset the counter.
3. U/D (Up/Down): Input pin to select the counting direction.
4. D0-D3 (Data Inputs): Four parallel data input pins representing the initial count value.
5. Q0-Q3 (Outputs): Four parallel output pins representing the current count value.
6. RC (Ripple Carry): Output pin that generates a carry signal when the maximum count is reached.
7. CET (Count Enable): Input pin to enable/disable counting.
8. PE (Parallel Enable): Input pin to load the parallel data inputs into the counter.

Functional Features

• Synchronous Counting: The CD74HC192PW performs synchronous counting, where the outputs change simultaneously with the clock signal.
• Up/Down Counting: It supports both up and down counting modes, allowing flexibility in various applications.
• Parallel Load: The parallel enable (PE) input allows loading of data from the data inputs into the counter.
• Ripple Carry Output: The ripple carry (RC) output generates a carry signal when the maximum count is reached, enabling cascading of multiple counters.
• Master Reset: The master reset (MR) input resets the counter to its initial state when activated.

Advantages and Disadvantages

Advantages: - High-Speed Operation: The CD74HC192PW operates at high clock frequencies, making it suitable for time-critical applications. - Versatility: It supports multiple counting modes and can be easily integrated into different systems. - Low Power Consumption: Utilizing CMOS technology, the IC consumes low power, resulting in energy-efficient operation.

Disadvantages: - Limited Counting Range: The CD74HC192PW is a 4-bit counter, limiting the maximum count to 16 states. - Sensitivity to Noise: As with any CMOS-based device, the IC may be susceptible to noise interference, requiring proper noise mitigation techniques.

Working Principles

The CD74HC192PW utilizes a combination of flip-flops and logic gates to perform the counting operations. The clock pulse (CP) input triggers the flip-flops, causing them to change their states based on the counting mode and direction selected by the up/down (U/D) input. The current count value is represented by the output pins (Q0-Q3), which change synchronously with the clock signal. The counter can be reset to its initial state using the master reset (MR) input.

Detailed Application Field Plans

The CD74HC192PW finds applications in various fields, including:

1. Digital Counters: It is commonly used as a building block for designing digital counters in electronic devices.
2. Frequency Division: The IC can be employed to divide the frequency of clock signals in communication systems and frequency synthesizers.
3. Industrial Automation: It can be utilized in industrial automation systems for counting and control purposes.
4. Automotive Electronics: The counter can be integrated into automotive electronics for tasks such as speed measurement and event counting.

Detailed and Complete Alternative Models

1. CD74HC193E: Similar to CD74HC192PW but available in a DIP (Dual Inline Package) package.
2. SN74LS192N: A TTL logic-based alternative with similar functionality.
3. CD4516BE: A CMOS-based alternative with 4-bit synchronous binary up/down counting capability.

These alternative models provide similar functionalities to the CD74HC192PW and can be considered based on specific requirements and availability.

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