74LS42 BCD to Decimal Decoder – DIP-16

The 7442 is a TTL logic integrated circuit designed to convert 4-bit Binary-Coded Decimal (BCD) inputs into ten discrete decimal outputs. It performs one-of-ten decoding, where only one output line becomes active for each valid BCD input from 0 to 9. The device features active-low outputs, making it suitable for direct logic decoding, indicator driving, address selection, and control applications. Operating on a standard 5V TTL supply, the 7442 is widely used in digital systems requiring decimal decoding and selection logic.

Features

- Converts 4-bit BCD input into 10 decimal outputs

- One-of-ten output decoding

- Active-low output configuration

- Standard TTL logic compatibility

- Single 5V supply operation

- Fast switching performance

- Suitable for address decoding

- Useful for display and indicator selection

- Reliable digital logic operation

- DIP-16 through-hole package

- Breadboard-friendly design

- Supports logic and control circuits

- Easy PCB integration

- Ideal for educational and industrial digital systems

Specifications

- Model: 7442

- Device Type: 4-Line BCD to 10-Line Decimal Decoder IC

- Logic Family: TTL

- Input Format: 4-Bit BCD

- Number of Outputs: 10

- Output Logic: Active-Low

- Supply Voltage: 5V

- Input Logic Levels: TTL Compatible

- Propagation Delay (Typical): 25ns

- Maximum Output Sink Current: 16mA

- Power Consumption (Typical): 50mW

- Package Type: 16-Pin DIP

- Mounting Type: Through-Hole

- Operating Temperature Range: 0°C to +70°C

- Application Type: Decimal Decoding and Selection Logic

Links

- 3D Model

- Datasheet

Tutorials

bcd to decimal decoder,bcd to decimal decoder using ic 7442.