74HC390DB,118

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Counter/Divider
• Characteristics: High-speed operation, low power consumption
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Dual decade ripple counter with reset
• Packaging/Quantity: Tape and reel, 2500 units per reel

Specifications

• Supply Voltage Range: 2V to 6V
• Operating Temperature Range: -40°C to +125°C
• Maximum Clock Frequency: 30 MHz
• Number of Stages: 2
• Reset Function: Yes
• Output Type: CMOS

Detailed Pin Configuration

1. CP1: Clock input for the first decade counter
2. CP0: Clock input for the second decade counter
3. MR: Master reset input
4. Q0: Output for the first decade counter
5. Q1: Output for the second decade counter
6. Q2: Output for the second decade counter
7. Q3: Output for the second decade counter
8. GND: Ground
9. VCC: Positive supply voltage

Functional Features

• Dual Decade Ripple Counter: The 74HC390DB,118 is a dual decade ripple counter that can count up to 99 in binary-coded decimal (BCD) format.
• Reset Function: The master reset input (MR) allows the counter to be reset to zero.
• High-Speed Operation: The IC operates at high clock frequencies, making it suitable for applications requiring fast counting.
• Low Power Consumption: The 74HC390DB,118 is designed to minimize power consumption, making it energy-efficient.

Advantages and Disadvantages

Advantages: - Versatile: Can be used in various applications that require counting or dividing functions. - Compact Size: The small outline package (SOIC) allows for space-saving integration on PCBs. - Low Power Consumption: Ideal for battery-powered devices.

Disadvantages: - Limited Counting Range: The counter can only count up to 99 in BCD format, which may not be sufficient for certain applications. - No Carry Output: The IC does not provide a carry output, limiting its use in cascading multiple counters.

Working Principles

The 74HC390DB,118 operates as a ripple counter, where each stage triggers the next stage. The clock inputs (CP1 and CP0) receive clock pulses, causing the counter to increment by one. When the counter reaches its maximum value (99 in BCD), it resets to zero upon receiving a pulse on the master reset input (MR).

Detailed Application Field Plans

• Frequency Division: The 74HC390DB,118 can be used to divide an input clock frequency by a factor of 100, making it suitable for frequency division applications.
• Digital Counters: It can be utilized in digital counting systems, such as event counters or timers.
• Industrial Control Systems: The IC can be integrated into industrial control systems that require precise counting or timing functions.

Detailed and Complete Alternative Models

• CD4017: Decade counter/divider with 10 decoded outputs
• 74LS90: Decade counter/divider with individual clock inputs for each decade

(Note: The alternative models listed above are just a few examples and not an exhaustive list.)

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