MC74HC390ANG

Product Overview

• Category: Integrated Circuit (IC)
• Use: Digital Counter
• Characteristics: High-Speed, CMOS Logic, Dual 4-Bit Decade Counter
• Package: PDIP-16 (Plastic Dual In-Line Package)
• Essence: The MC74HC390ANG is a dual 4-bit decade counter that can count up to 99. It is commonly used in digital circuits for counting applications.
• Packaging/Quantity: The MC74HC390ANG is typically sold in reels or tubes containing multiple units.

Specifications

• Supply Voltage: 2V to 6V
• Logic Family: HC (High-Speed CMOS)
• Number of Pins: 16
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay: 15 ns (typical)
• Maximum Clock Frequency: 29 MHz

Pin Configuration

The MC74HC390ANG has 16 pins arranged as follows:

__ __ Q0 |1 \__/ 16| Vcc Q1 |2 15| Q3 Q2 |3 14| Q4 Q3 |4 13| Q5 Q4 |5 MC 12| Q6 Q5 |6 74 11| Q7 Q6 |7 HC 10| MR (Master Reset) Q7 |8 9| CLK (Clock Input) GND |__________|

Functional Features

• Dual 4-bit decade counter with separate clock inputs and outputs
• Can count up to 99 in binary-coded decimal (BCD) format
• Outputs can be cascaded to create larger counters
• Master Reset (MR) input for resetting the counter to zero
• High-speed operation suitable for time-critical applications
• CMOS logic provides low power consumption and high noise immunity

Advantages and Disadvantages

Advantages: - High-speed operation allows for quick counting - CMOS technology offers low power consumption - Can be easily cascaded for larger counting applications

Disadvantages: - Limited to counting up to 99 in BCD format - Requires an external clock signal for operation

Working Principles

The MC74HC390ANG operates by incrementing its count on each rising edge of the clock input. The outputs represent the current count in binary-coded decimal format. The counter can be reset to zero using the Master Reset (MR) input. The IC uses CMOS technology, which provides high speed and low power consumption.

Detailed Application Field Plans

The MC74HC390ANG is commonly used in various digital applications that require counting functionality. Some specific application fields include:

1. Digital Timers: The IC can be used to implement timers in devices such as kitchen appliances, electronic gadgets, and industrial equipment.
2. Frequency Dividers: By cascading multiple MC74HC390ANG counters, frequency division can be achieved for applications like clock generation and frequency synthesis.
3. Event Counters: The IC can be used to count events or pulses in systems such as traffic monitoring, production line control, and scientific experiments.

Detailed and Complete Alternative Models

1. CD4017BE: Decade Counter/Divider with 10 outputs, suitable for a wide range of counting applications.
2. SN74LS90N: Decade Counter with asynchronous clear and ripple carry output, ideal for synchronous counting applications.
3. CD4029BE: Presettable Up/Down Counter with parallel load capability, useful for applications requiring preset values.

These alternative models offer similar functionality to the MC74HC390ANG and can be used as replacements depending on specific requirements.

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