54LS42 ,BCD to Decimal Decoderapplications as 4-line-to-16-line decoders; 3-ed in pairs to make BCD input data available for deco ..
54LS42DMQB ,Decimal Decodersapplications as 4-line-to-16-line decoders; 3-ed in pairs to make BCD input data available for deco ..
54LS42DMQB ,Decimal DecodersFeaturesYDiode clamped inputsThese BCD-to-decimal decoders consist of eight invertersYand ten, four ..
54LS51 ,Dual 2-Wide 2-Input, 2-Wide 3-Input AND-OR-INVERT Gate54LS51/DM74LS51Dual2-Wide2-Input,2-Wide3-InputAND-OR-INVERTGatesJune198954LS51/DM74LS51Dual2-Wide2- ..
54LS54 ,4-WIDE, 2-INPUT AND-OR-INVERT GATEElectrical Characteristics"
table am not guaranteed at the absolute maximum ratings.
The "Recomme ..
54LS74 ,Dual Positive-Edge-Triggered D Flip-Flop with Preset, Clear and Complementrary OutputsFeaturesof the rising edge of the clock. The data on the D input mayYAlternate military/aerospace d ..
7016X5 , SMT LEDs 1208 Package Size
70543-0001 , 2.54mm (.100") Pitch SL™ Header, Single Row, Vertical, .120" Pocket, Shrouded, 2Circuits, 0.38μm (15μ") Gold (Au) Selective Plating, Tin (Sn) PC Tail Plating
70553-0106 , 2.54mm (.100") Pitch SL™ Header, Low Profile, Single Row, Right Angle, .120" PocketShrouded, 2 Circuits, 0.76μm (30μ") Gold (Au) Selective Plating, Tin (Sn) PC Tail
70CRU02 ,200V 35A Ultra-Fast Doubler Diode in a TO-218 packageapplications in which the switching energy is designed not to bepredominant portion of the total en ..
70CRU04 ,400V 70A Ultra-Fast Doubler Diode in a TO-218 packageapplications in which the switching energy is designed not to bepredominant portion of the total en ..
70G-IDC5S , Contact Closure DC Input Modules
54LS42
BCD to Decimal Decoder
TL/F/6365
54LS42/DM54LS42/DM74LS42
BCD/Decimal
Decoders
June 1989
54LS42/DM54LS42/DM74LS42 BCD/Decimal Decoders
General Description
These BCD-to-decimal decoders consistof eight inverters
andten, four-input NAND gates. The invertersare connect-in pairsto make BCD input data availablefor decodingthe NAND gates.Full decodingof input logic ensures
thatall outputs remainoffforall invalid (10–15) input condi-
tions.
Features Diode clamped inputs Alsofor applicationsas 4-line-to-16-line decoders;3-
line-to-8-line decodersAll outputsare highfor invalid input conditions Alternate Military/Aerospace device (54LS42)is avail-
able. Contacta National Semiconductor Sales Office/
Distributorfor specifications.
Connection Diagram
Dual-In-Line Package
TL/F/6365–1
Order Number 54LS42DMQB, 54LS42FMQB,
DM54LS42J,DM54LS42W, DM74LS42M orDM74LS42N
See NSPackage Number J16A, M16A, N16Eor W16A
Function Table
No. BCD Inputs Decimal OutputsCBA 0123456789 LLLLL HHHHHHHHH LLL HHLH HHHHHHH LLHLHHL HHHHHHH LL HHHHHLH HHHHH LHLLH HHHL HHHHH LHL HHHHHHLH HHH LH HLHHHHH HLHHH L HHHHHHHHHHLHH HLLLH HHHHHHHLH HLL HHHHHHHHHHL HLHLH HHHHHHHHHN HL HHHHHHHHHHHHV HHLL HHHHHHHHHHA HHLH HHHHHHHHHHL HHHLH HHHHHHHHHI HHHHHHHHHHHHHHDeHigh LeveleLow Level
Logic Diagram
TL/F/6365–2
C1995National SemiconductorCorporation RRD-B30M105/PrintedinU.S.A.
