MM74C926N

Product Overview

• Category: Integrated Circuit (IC)
• Use: Counter/Decoder/Driver
• Characteristics: High-speed, low-power consumption
• Package: DIP (Dual In-line Package)
• Essence: 4-digit counter with multiplexed 7-segment LED display driver
• Packaging/Quantity: Tube packaging, 25 pieces per tube

Specifications

• Supply Voltage: 2.0V to 6.0V
• Operating Temperature: -40°C to +85°C
• Maximum Clock Frequency: 10MHz
• Number of Outputs: 16
• Display Type: Common Cathode
• Digit Selection: Multiplexed

Detailed Pin Configuration

The MM74C926N IC has a total of 16 pins. The pin configuration is as follows:

1. VCC - Supply Voltage
2. GND - Ground
3. CLK - Clock Input
4. RST - Reset Input
5. INH - Inhibit Input
6. A - Digit A Output
7. B - Digit B Output
8. C - Digit C Output
9. D - Digit D Output
10. E - Segment E Output
11. F - Segment F Output
12. G - Segment G Output
13. DP - Decimal Point Output
14. LT - Lamp Test Input
15. BI/RBO - Blanking Input/ Ripple Blanking Output
16. CO - Carry Output

Functional Features

The MM74C926N is a versatile integrated circuit that combines a 4-digit counter with a multiplexed 7-segment LED display driver. It offers the following functional features:

• Counting: The IC can count from 0 to 9999 using the clock input.
• Display: It can drive a 4-digit 7-segment LED display, allowing the user to visually represent the count.
• Multiplexing: The digit selection is multiplexed, enabling the use of fewer pins for driving multiple digits.
• Blanking: The IC supports blanking input, which allows the user to turn off the display when needed.
• Reset and Inhibit: The IC provides reset and inhibit inputs for controlling the counting operation.

Advantages and Disadvantages

Advantages: - High-speed operation enables real-time counting and display updates. - Low-power consumption makes it suitable for battery-powered applications. - Compact DIP package allows easy integration into various electronic systems. - Versatile functionality eliminates the need for separate counter and display driver components.

Disadvantages: - Limited to 4-digit counting, may not be suitable for applications requiring higher counts. - Common cathode display type restricts compatibility with common anode displays. - Lack of built-in decoding limits direct use with non-7-segment displays.

Working Principles

The MM74C926N operates by incrementing the count on each rising edge of the clock input. The count is displayed on the 7-segment LED display by multiplexing the four digits. The digit selection is controlled by the internal circuitry, which cycles through the four digits at a high speed. The count value is stored internally and updated based on the clock input.

Detailed Application Field Plans

The MM74C926N finds applications in various fields, including:

1. Digital Counters: It can be used in digital counters for industrial automation, event counting, and timekeeping applications.
2. Scoreboards: The IC can drive 4-digit scoreboards in sports arenas or game consoles.
3. Timers: It can be utilized as a countdown timer in kitchen appliances, fitness equipment, or laboratory instruments.
4. Measurement Devices: The IC can display measured values in digital multimeters, temperature controllers, or process control systems.

Detailed and Complete Alternative Models

1. CD4518: 4-bit Up/Down Counter with Parallel Load
2. CD4029: Presettable Up/Down Counter
3. SN74LS192: Synchronous 4-Bit Up/Down Decade Counter

These alternative models offer similar functionality to the MM74C926N and can be considered as alternatives based on specific requirements.

In conclusion, the MM74C926N is a versatile integrated circuit that combines a 4-digit counter with a multiplexed 7-segment LED display driver. With its high-speed operation, low-power consumption, and compact package, it finds applications in various fields such as digital counters, scoreboards, timers, and measurement devices.