CD74HC190NSR

Product Overview

• Category: Integrated Circuit
• Use: Counter/Divider
• Characteristics: High-Speed, CMOS Logic, 4-Bit Binary Counter with Asynchronous Reset
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: The CD74HC190NSR is a 4-bit binary counter with an asynchronous reset function. It is designed to be used in various applications that require counting or dividing signals.
• Packaging/Quantity: The CD74HC190NSR is typically sold in reels of 2500 units.

Specifications

• Supply Voltage: 2V to 6V
• Operating Temperature Range: -40°C to +85°C
• Logic Family: HC (High-Speed CMOS)
• Number of Bits: 4
• Clock Frequency: Up to 25 MHz
• Reset Type: Asynchronous
• Output Type: Standard

Detailed Pin Configuration

The CD74HC190NSR has a total of 16 pins. Here is the detailed pin configuration:

1. Clock Input (CP)
2. Clock Enable Input (CEP)
3. Parallel Load Input (PL)
4. Asynchronous Reset Input (MR)
5. Carry Output (CO)
6. Terminal Count Outputs (Q0, Q1, Q2, Q3)
7. Ripple Clock Output (RCO)
8. Ground (GND)
9. Carry-In (CI)
10. Data Inputs (D0, D1, D2, D3)
11. VCC (Positive Power Supply)

Functional Features

• Binary Counting: The CD74HC190NSR can count in binary from 0 to 15.
• Asynchronous Reset: The asynchronous reset input allows the counter to be reset to 0 at any time, independently of the clock signal.
• Parallel Load: The parallel load input enables the counter to be loaded with a specific value in parallel.
• Carry Output: The carry output provides a signal when the counter reaches its maximum count (15) and wraps around to 0.

Advantages and Disadvantages

Advantages: - High-speed operation - Wide operating voltage range - Asynchronous reset capability - Compact SOIC package

Disadvantages: - Limited number of bits (4-bit) - Not suitable for applications requiring larger counters

Working Principles

The CD74HC190NSR operates based on the principles of digital counting using flip-flops. It utilizes a clock signal to increment the count by one on each rising edge. The counter can be reset asynchronously using the reset input or loaded with a specific value using the parallel load input. The carry output indicates when the counter reaches its maximum count and wraps around to 0.

Detailed Application Field Plans

The CD74HC190NSR is commonly used in various applications that require counting or dividing signals. Some of the typical application fields include:

1. Frequency Division: The CD74HC190NSR can be used to divide an input frequency by a factor of 16, allowing for frequency scaling in electronic circuits.
2. Event Counting: It can be employed to count events or pulses in systems such as industrial automation, robotics, and digital communication.
3. Timekeeping: The counter can be utilized in timekeeping circuits where precise timing and synchronization are required.
4. Sequential Control: It can be integrated into sequential control circuits to generate specific sequences of events or actions.

Detailed and Complete Alternative Models

Here are some alternative models that offer similar functionality to the CD74HC190NSR:

1. CD74HC191E: 4-Bit Synchronous Up/Down Binary Counter
2. CD74HC193E: 4-Bit Synchronous Up/Down Binary Counter with Clear
3. CD74HC390E: Dual Decade Ripple Counter

These alternative models provide different features and may be suitable for specific application requirements.

Word count: 498 words