SN54HC42

Supply voltage range, V_CC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 V to 7 V
Input clamp current, I_IK (V_I < 0 or V_I > V_CC) (see Note 1) . . . . . . . . . . . . . . . . . . .±20 mA
Output clamp current, I_OK (V_O < 0 or V_O > V_CC) (see Note 1) . . . . . . . . . . . . . . . .±20 mA
Continuous output current, I_O (V_O = 0 to V_CC). . . . . . . . . . . . . . . . . . . . . . . . .. . . ±25 mA
Continuous current through V_CC or GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±50 mA
Package thermal impedance, _JA (see Note 2): D package . . . . . . . . . . . . . . . . .113°C/W
                                                                           N package . . . . . . . . . . . . . . . .. . 78°C/W
Storage temperature range, T_stg . . . . . . . . . . . . . . . . . . . . . . . . . .. . .. .65°C to 150°C

These monolithic decimal decoders consist of eight inverters and ten 4-input NAND gates. The SN54HC42 is 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.

The SN54HC42 is characterized for operation over the full military temperature range of 55°C to 125°C. The SN74HC42 is characterized for operation from 40°C to 85°C.