74LS42 Datasheet PDF – BCD/Decimal Decoder – National

What is 74LS42?

This is a BCD to decimal decoder/driver integrated circuit that is commonly used in digital electronics. It is a Multipurpose Decoder designed to accept four BCD inputs and provide ten mutually exclusive outputs.

Function: BCD/Decimal Decoder

Package: DIP, SOP 16 Pin

Manufacturer: National Semicondcutor ( Texas Instruments )

Pinouts:
74LS42 datasheet

Description

These BCD-to-decimal decoders consist of eight inverters and ten, four-input NAND gates. The inverters are connected in pairs to make BCD input data available for decoding by the NAND gates. Full decoding of input logic ensures that all outputs remain off for all invalid (10± 15) input conditions.

Features

1. Diode clamped inputs

2. Also for applications as 4-line-to-16-line decoders; 3-line-to-8-line decoders

3. All outputs are high for invalid input conditions

Logic Diagram

components

Advantages

1. Can be used with a variety of display types, including LEDs and LCDs

2. Provides a straightforward method of decoding BCD inputs and displaying them on a 7-segment display

National Semiconductor was acquired by Texas Instruments (TI) on September 23, 2011.

Other data sheets are available within the file: 54LS42, 54LS42DMQB, 54LS42FMQB, DM54LS42

74LS42 Datasheet PDF

74LS42 pdf

74LS42 Datasheet – 4-Line BCD to 10-Line Decimal Decoder

This is a BCD to decimal decoder/driver integrated circuit that is commonly used in digital electronics.

Part Number: 74LS42

Function: 4-LINE BCD TO 10-LINE DECIMAL DECODER

Package: DIP 16 Pin, PLCC 18 Pin

Manufacturer: Texas Instruments

Pinouts:

74LS42 datasheet

 

Description

These monolithic BCD-to-decimal decoders consist of eight inverters and ten four-input NAND gates. The inverters are connected in pairs to make BCD input data availible for decoding by the NAND gates. Full decoding of valid input logic ensures that all outputs remain off for all invalid input conditions.

Features

1. Can be used with a variety of display types, including LEDs and LCDs

2. Provides a straightforward method of decoding BCD inputs and displaying them on a 7-segment display

3. All ouputs are high for invalid input conditions

4. Also for application as

(1) 4-Line-to-16-Line Decoders

(2) 3-Line-to-8-Line Decoders

5. Diode-Clamped Inputs

Logic Diagram

components

Other data sheets are available within the file: SN74LS42, 5442A, 54LS42, 7442A, SN5442A

74LS42 Datasheet PDF Download

74LS42 pdf