MC74HC390AFELG

Product Overview

• Category: Integrated Circuit (IC)
• Use: Counter/Divider
• Characteristics: High-speed operation, low power consumption
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Dual 4-bit Decade Ripple Counter
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 2V to 6V
• Maximum Clock Frequency: 25 MHz
• Number of Stages: 2
• Output Current: ±5.2 mA
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

1. CP0: Clock Input for Counter 0
2. CP1: Clock Input for Counter 1
3. MR: Master Reset Input
4. Q0: Output for Counter 0
5. Q1: Output for Counter 1
6. Q2: Output for Counter 2
7. Q3: Output for Counter 3
8. VCC: Positive Power Supply
9. GND: Ground

Functional Features

• Dual 4-bit decade ripple counter with asynchronous reset
• High-speed operation allows for efficient counting in various applications
• Low power consumption makes it suitable for battery-powered devices
• Asynchronous master reset enables easy initialization of the counters
• Outputs can be used as clock signals for other devices

Advantages

• Compact SOIC package saves board space
• Wide supply voltage range allows for flexibility in different systems
• High-speed operation enables quick counting in time-critical applications
• Low power consumption extends battery life in portable devices

Disadvantages

• Limited number of stages may not be sufficient for complex counting tasks
• Lack of synchronous reset option may require additional circuitry for specific applications

Working Principles

The MC74HC390AFELG is a dual 4-bit decade ripple counter that counts up to 99 in binary-coded decimal (BCD) format. It operates by incrementing the count on each rising edge of the clock input. The counters can be reset asynchronously using the master reset input, which sets all outputs to zero.

Detailed Application Field Plans

• Frequency division: The MC74HC390AFELG can be used to divide the frequency of an input clock signal by a factor of 100, allowing for precise timing in various applications such as digital clocks and timers.
• Event counting: The counters can be utilized to keep track of events or occurrences, such as the number of pulses received from a sensor or the number of button presses in a user interface.
• Sequential control: By utilizing the outputs as clock signals for other devices, the MC74HC390AFELG can be employed in sequential control systems, where specific actions are triggered based on the count value.

Detailed and Complete Alternative Models

• CD4017BE: Decade Counter/Divider with 10 decoded outputs
• SN74LS93N: 4-bit Binary Ripple Counter
• CD4020BE: 14-stage Binary Counter

These alternative models offer similar functionality and can be considered as substitutes for the MC74HC390AFELG depending on specific requirements.

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