LS43

The LS43 consists 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 valid input logic ensures that all outputs remain off for all invalid input conditions.

Features of the LS43 are:(1)all output are high for invalid input conditions;(2)also for application as 4-line to 16-line decoders,3-line to 8-line decoders.

The recommended operating conditions of the LS43 can be summarized as:(1):the parameter is supply voltage,the symbol is VCC,the 9LS/54LS min is 4.5,the 9LS/54LS nom is 5,the 9LS/54LS max is 5.5,the 9LS/74LS min is 4.75,the 9LS/74LS nom is 5,the 9LS/74LS max is 5.25,the unit is V ;(2):the parameter is high level output current,the symbol is IOH,the 9LS/54LS max is -400,the 9LS/74LS max is -400,the unit is A;(3):the parameter is low level output current,the symbol is IOL,the 9LS/54LS max is 4,the 9LS/74LS max is 8,the unit is mA;(4):the parameter is operating free-air temperature,the symbol is TA,the 9LS/54LS rating is -55 to 125,the 9LS/74LS rating is 0 to 70,the unit is .