MM74C908N
Dual CMOS relay driver ICs for power management applications
Manufacturer： ['fairchild', 'onsemi']
series introduction
# MM74C908N Product Series Introduction
## 1. Overview
The MM74C908N is a remarkable product series that belongs to the category of integrated circuits. These integrated circuits are designed with high - precision engineering to meet a wide range of electronic application requirements. They are part of the 74C series, which is well - known for its reliability and performance in the electronics industry.
## 2. Key Features
### 2.1 Logic Functionality
- **Decoding Capability**: The MM74C908N is primarily a BCD - to - decimal decoder. It takes a 4 - bit binary - coded decimal (BCD) input and converts it into one of ten possible decimal outputs. This decoding function is crucial in applications where digital information needs to be translated from a binary format to a more human - readable decimal format.
- **High - Speed Operation**: It offers relatively high - speed decoding operations. This allows for quick conversion of BCD inputs to decimal outputs, making it suitable for applications that require real - time processing, such as digital displays and counters.
### 2.2 Electrical Characteristics
- **Low Power Consumption**: One of the significant advantages of the MM74C908N is its low power consumption. This makes it an ideal choice for battery - powered devices or applications where energy efficiency is a priority. The low power requirements also contribute to less heat generation, which can enhance the overall reliability and lifespan of the circuit.
- **Wide Operating Voltage Range**: The product can operate within a wide voltage range. This flexibility allows it to be used in various electronic systems with different power supply configurations. For example, it can typically operate within a voltage range of 3V to 18V, providing compatibility with a broad spectrum of power sources.
### 2.3 Package and Physical Design
- **DIP Package**: The MM74C908N is commonly available in a dual in - line package (DIP). The DIP package is well - established in the electronics industry and offers several benefits. It is easy to handle during the assembly process, and it can be easily inserted into printed circuit boards (PCBs) using standard through - hole technology. This makes it accessible for both professional electronics manufacturers and hobbyists.
- **Compact Size**: Despite its functionality, the MM74C908N has a relatively compact size. This is beneficial for applications where space is limited, such as in portable electronic devices or densely packed circuit boards.
## 3. Applications
### 3.1 Digital Displays
- **Seven - Segment Displays**: In digital display systems, especially those using seven - segment displays, the MM74C908N can be used to convert BCD - encoded data into the appropriate signals for driving the segments of the display. For example, in a digital clock or a calculator, the BCD values representing hours, minutes, or numbers need to be decoded and displayed on the seven - segment digits. The MM74C908N simplifies this process by providing the necessary decoding function.
- **LED Matrix Displays**: It can also be used in LED matrix displays. By decoding the BCD inputs, it can control which LEDs in the matrix are illuminated, allowing for the display of numbers, letters, or simple graphics.
### 3.2 Counters and Timers
- **Decimal Counters**: In counter circuits, the MM74C908N can be used in conjunction with other components to create decimal counters. The decoder can take the BCD output of a counter and convert it into a decimal representation, which can then be used for various purposes, such as counting events, measuring time intervals, or keeping track of quantities.
- **Timing Circuits**: In some timing applications, the decoding
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