SN74HC42DR Datasheet PDF – Decimal Decoder

Part Number: SN74HC42DR, HC42

Function: 4-LINE TO 10-LINE DECODERS (1 OF 10)

Package: DIP, SOP 16 Pin

Manufacturer: Texas Instruments


SN74HC42DR Decimal Decoder


1. Wide Operating Voltage Range of 2 V to 6 V
2. Outputs Can Drive Up To 10 LSTTL Loads
3. Low Power Consumption, 80-μA Max ICC
4. Typical tpd = 14 ns
5. ±4-mA Output Drive at 5V
6. Low Input Current of 1 μA Max
7. Full Decoding of Input Logic
8. All Outputs Are High for Invalid BCD Conditions
9. Also for Applications as 3-Line to 8-Line Decoders

SN74HC42DR datasheet


These decimal decoders consist of eight inverters and ten 4-input NAND gates. The inverters are connected in pairs to make BCD input data available for decoding by the NAND gates. Full decoding of valid input logic ensures that all inputs remain off for all invalid input conditions.

Block Diagram :



SN74HC42DR Datasheet PDF Download

SN74HC42DR pdf

Other data sheets are available within the file: 54HC42FK, 54HC42J, 54HC42W, 74HC42, 7442