MM74C93N

Product Overview

• Category: Integrated Circuit
• Use: Counter
• Characteristics: 4-bit binary ripple counter, synchronous reset, low power consumption
• Package: DIP (Dual In-line Package)
• Essence: The MM74C93N is a versatile counter IC that can be used in various applications requiring counting functionality.
• Packaging/Quantity: Available in tubes or reels, with a quantity of 25 units per tube/reel.

Specifications

• Supply Voltage: 5V
• Maximum Clock Frequency: 30 MHz
• Number of Counting Stages: 4
• Synchronous Reset: Yes
• Low Power Consumption: Yes

Detailed Pin Configuration

The MM74C93N has a total of 14 pins, each serving a specific purpose. Here is the detailed pin configuration:

1. CP (Clock Input): This pin receives clock pulses to increment the counter.
2. MR (Master Reset): When this pin is set to a logic low, it resets the counter to its initial state.
3. QA-QD (Output Pins): These four pins represent the binary output of the counter, ranging from Q0 to Q3.
4. RC (Ripple Carry Output): This pin provides a carry signal when the counter reaches its maximum count and overflows.

5-14. GND (Ground) and VCC (Power Supply): These pins are connected to the ground and power supply respectively.

Functional Features

• Binary Ripple Counter: The MM74C93N is a 4-bit binary ripple counter, capable of counting up to 15 (1111 in binary).
• Synchronous Reset: The counter can be reset to its initial state synchronously using the Master Reset (MR) pin.
• Low Power Consumption: The IC is designed to operate with low power consumption, making it suitable for battery-powered devices.

Advantages and Disadvantages

Advantages: - Versatile counter IC suitable for various applications. - Synchronous reset allows precise control over the counter's state. - Low power consumption extends battery life in portable devices.

Disadvantages: - Limited counting range (up to 15) due to its 4-bit design. - Not suitable for high-frequency applications due to its maximum clock frequency of 30 MHz.

Working Principles

The MM74C93N operates based on the principle of binary counting. Each clock pulse received at the CP pin increments the counter by one. When the counter reaches its maximum count (15), it overflows and generates a carry signal at the RC pin. The counter can be reset to its initial state using the MR pin.

Detailed Application Field Plans

The MM74C93N can be used in various applications that require counting functionality, such as:

1. Digital Timers: The IC can be used to keep track of time intervals in digital timers.
2. Frequency Dividers: By connecting the output pins to appropriate logic circuits, the IC can divide input frequencies.
3. Event Counters: It can be used to count events or occurrences in industrial automation systems.
4. Traffic Light Control: The IC can be utilized to sequence the timing of traffic lights.

Detailed and Complete Alternative Models

Here are some alternative models that provide similar functionality to the MM74C93N:

1. CD4017: A decade counter with 10 outputs, capable of counting up to 10.
2. SN74LS163: A 4-bit synchronous counter with parallel load capability.
3. CD4020: A 14-stage ripple carry binary counter/divider.

These alternative models offer different features and specifications, allowing users to choose the most suitable option for their specific application.

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