CD74HC190PW

Product Overview

• Category: Integrated Circuit
• Use: Counter/Divider
• Characteristics: High-Speed, CMOS Logic, Synchronous Operation
• Package: TSSOP (Thin Shrink Small Outline Package)
• Essence: The CD74HC190PW is a high-speed CMOS logic counter/divider integrated circuit. It operates synchronously and can be used in various applications that require counting or dividing signals.
• Packaging/Quantity: The CD74HC190PW is typically sold in reels containing 2500 units.

Specifications

• Supply Voltage: 2V to 6V
• Operating Temperature Range: -40°C to +85°C
• Logic Family: HC
• Number of Pins: 16
• Maximum Clock Frequency: 25 MHz
• Counting Modes: Up, Down, Up/Down, Reset
• Output Type: Standard

Detailed Pin Configuration

The CD74HC190PW has 16 pins, each serving a specific purpose:

1. CP: Clock Input
2. MR: Master Reset Input
3. U/D: Up/Down Control Input
4. D0-D3: Data Inputs
5. Q0-Q3: Outputs
6. RC: Ripple Carry Output
7. CET: Count Enable Parallel Input
8. PE: Preset Enable Input
9. P0-P3: Preset Inputs
10. GND: Ground
11. Q3/Q0: Output Selector
12. TC: Terminal Count Output
13. VCC: Supply Voltage
14. Q1/Q2: Output Selector
15. Q2/Q1: Output Selector
16. Q3/Q0: Output Selector

Functional Features

• High-speed operation allows for efficient counting and dividing of signals.
• Synchronous operation ensures accurate and reliable results.
• Multiple counting modes (up, down, up/down) provide flexibility in various applications.
• Reset functionality allows for easy initialization of the counter.
• Ripple carry output enables cascading multiple counters for higher counting ranges.

Advantages and Disadvantages

Advantages: - High-speed operation enables efficient signal processing. - Synchronous operation ensures accurate results. - Versatile counting modes offer flexibility in different applications. - Reset functionality simplifies counter initialization. - Ripple carry output facilitates cascading of multiple counters.

Disadvantages: - Limited maximum clock frequency (25 MHz). - Requires an external clock source for operation. - May not be suitable for applications requiring very high counting ranges.

Working Principles

The CD74HC190PW operates based on synchronous logic principles. It counts or divides signals based on the input clock and control signals. The counting direction (up or down) is determined by the Up/Down control input. The counter can be preset to a specific value using the preset inputs. The terminal count output indicates when the counter reaches its maximum value. The ripple carry output allows for cascading multiple counters to achieve higher counting ranges.

Detailed Application Field Plans

The CD74HC190PW can be used in various applications that require counting or dividing signals. Some potential application fields include:

1. Frequency Dividers: The CD74HC190PW can be used to divide the frequency of an input signal by a specific factor, allowing for precise frequency division in communication systems, digital clocks, and frequency synthesizers.

2. Event Counters: In industrial automation and control systems, the CD74HC190PW can be utilized as an event counter to keep track of the number of occurrences of specific events, such as machine cycles or product counts.

3. Time Delay Generators: By utilizing the CD74HC190PW's counting capabilities, it can be employed as a time delay generator in applications that require precise timing control, such as pulse-width modulation (PWM) circuits or time-based relay control systems.

4. Sequential Logic Circuits: The CD74HC190PW can be integrated into sequential logic circuits to implement various functions, such as sequence generation, state machines, or address decoding in microprocessors.

Detailed and Complete Alternative Models

1. CD74HC191E: Similar to the CD74HC190PW, this model is also a high-speed CMOS counter/divider IC but comes in a DIP (Dual Inline Package) package.
2. CD40192BE: This model is a synchronous up/down BCD counter IC with similar functionality to the CD74HC190PW but operates at a higher clock frequency.
3. SN74LS192N: A TTL (Transistor-Transistor Logic) version of a synchronous up/down counter IC, offering compatibility with older logic families.

These alternative models provide similar functionalities to the CD74HC190PW but may differ in package type, operating voltage, or other specifications.

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