MM74C922N

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MM74C922N

IC ENCODER 16-KEY 1 X 8:4 18DIP

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  • Fr. Teil #MM74C922N
  • Paket PDIP-18
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Spezifikationen

Package Tube
Series 74C
ProductStatus Obsolete
Type 16-Key Encoder
Circuit 1 x 8:4
IndependentCircuits 1
Current-OutputHighLow 15mA, 16mA
VoltageSupplySource Single Supply
Voltage-Supply 3V ~ 15V
OperatingTemperature -40°C ~ 85°C
MountingType Through Hole
Package/Case 18-DIP (0.300, 7.62mm)

Übersicht

Description

The MM74C922N is a dual BCD (Binary-Coded Decimal) to 7-segment decoder/driver integrated circuit. Designed primarily for driving 7-segment displays, it converts 4-bit binary inputs into the corresponding 7-segment output, enabling visual representation of decimal digits (0-9). The chip features two independent decoders, allowing it to drive two displays simultaneously.
Key features include:
- Wide operating voltage range (typically 3V to 15V).
- Low power consumption.
- High-speed operation compatible with TTL (Transistor-Transistor Logic) families.
- Ability to handle both common cathode and common anode displays.
The MM74C922N is commonly used in digital clocks, calculators, and various electronic devices requiring numerical displays. Its simplicity and integration make it an effective solution for developers looking to implement numeric output in their designs.

Features

The MM74C922N is a BCD (Binary-Coded Decimal) to 7-segment display decoder/driver. Its key features include:
1. BCD Input: Accepts a 4-bit binary-coded decimal input (0-9).
2. 7-Segment Output: Drives a common cathode 7-segment display, producing the corresponding decimal digit.
3. Decimal Output: Provides outputs for the digits 0-9, with specific output states for invalid BCD inputs.
4. Low Power Consumption: Designed for low power operation, suitable for battery-powered applications.
5. Built-in Blanking: Features a blanking input, allowing the display to be turned off without altering the input.
6. Enable/Disable Function: Includes an active-low enable pin to control the output state.
7. Wide Supply Voltage: Operates with a supply voltage range of 3V to 15V.
8. Temperature Range: Functional over a temperature range of -40°C to +85°C, making it suitable for various environments.
These features make the MM74C922N ideal for digital display applications in consumer electronics and industrial devices.

Package

The MM74C922N is a BCD to decimal decoder/driver IC available in a dual in-line package (DIP) type. It typically features a 16-pin configuration.

Pinout

The MM74C922N is a BCD (Binary-Coded Decimal) to 7-segment latch/decoder/driver IC with a total of 16 pins. Its primary function is to convert a 4-bit BCD input into a format suitable for driving a 7-segment display.
Pin Count and Functions:
1. V_CC: Power supply (typically +5V).
2. GND: Ground.
3. D0-D3: BCD input pins (4 bits).
4. LE: Latch enable. When high, latches the BCD input.
5. BI: Blanking input. When high, disables the output.
6. LT: Lamp test. Activates all segments for testing.
7. R: Reset. Resets the outputs to zero.
8. a-g: 7-segment output pins corresponding to segments of the display.
9. DP: Decimal point output.
The MM74C922N is widely used in digital displays for applications requiring numeric representation.

Manufacturer

The MM74C922N is manufactured by Texas Instruments (TI), a leading global semiconductor company. Founded in 1930, Texas Instruments designs and produces a wide range of analog, digital, and embedded processing chips. The company is known for its innovations in the electronics industry, particularly in the areas of integrated circuits, microcontrollers, and signal processing technologies. Texas Instruments serves various markets, including automotive, industrial, communications, and consumer electronics, providing essential components for a diverse array of electronic devices.

Application

The MM74C922N is a BCD (Binary-Coded Decimal) to 7-segment decoder/driver primarily used in digital displays. Its application areas include electronic scoreboards, digital clocks, and other numeric displays in consumer electronics. It can also be used in appliances that require visual output of numeric data, such as weighing scales and measuring instruments. Additionally, it is suitable for applications in industrial control panels and information displays.

Equivalent

The MM74C922N is a BCD to decimal decoder/driver. Equivalent products include the CD4028, MC14553, and 74HC922. These alternatives may vary in features and specifications, so it's essential to check the datasheets for compatibility with your specific application.

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