Part Number : SN74HC42DR
Function :4-LINE TO 10-LINE DECODERS (1 OF 10)
Manufacturer : Texas Instruments
Pinout : 
Description
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.
Datasheet PDF Download
Other datasheets in the file : 54HC42FK, 54HC42J, 54HC42W, 5962-86821012A, 5962-8682101EA