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Renesas Electronics Components Datasheet

HD74LS42P Datasheet

BCD-to-Decimal Decoder

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HD74LS42
BCD-to-Decimal Decoder
REJ03D0409–0300
Rev.3.00
Jul.22.2005
This monolithic decimal decoder 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 NAND gates. Full decoding of valid input logic
ensures that all outputs remain off for all invalid input conditions.
Features
Ordering Information
Part Name
Package Type
Package Code Package
(Previous Code) Abbreviation
HD74LS42P
DILP-16 pin
PRDP0016AE-B P
(DP-16FV)
HD74LS42FPEL SOP-16 pin (JEITA)
PRSP0016DH-B FP
(FP-16DAV)
HD74LS42RPEL
SOP-16 pin (JEDEC)
PRSP0016DG-A
(FP-16DNV)
RP
Note: Please consult the sales office for the above package availability.
Taping Abbreviation
(Quantity)
EL (2,000 pcs/reel)
EL (2,500 pcs/reel)
Pin Arrangement
0Y 1
1Y 2
2Y 3
Outputs 3Y 4
4Y 5
5Y 6
6Y 7
GND 8
0
1A
2
3B
4
5
6C
7
8D
9
16 VCC
15 A
14 B
13 C
Inputs
12 D
11 9Y
10 8Y Outputs
9 7Y
(Top view)
Rev.3.00, Jul.22.2005, page 1 of 6


Renesas Electronics Components Datasheet

HD74LS42P Datasheet

BCD-to-Decimal Decoder

No Preview Available !

HD74LS42
Function Table
BCD input
Decimal output
No.
D
C
B
A
0
1
2
3
4
5
6
7
8
9
0
L
L
L
L
L
H
H
H
H
H
H
H
H
H
1
L
L
L
H
H
L
H
H
H
H
H
H
H
H
2
L
L
H
L
H
H
L
H
H
H
H
H
H
H
3
L
L
H
H
H
H
H
L
H
H
H
H
H
H
4
L
H
L
L
H
H
H
H
L
H
H
H
H
H
5
L
H
L
H
H
H
H
H
H
L
H
H
H
H
6
L
H
H
L
H
H
H
H
H
H
L
H
H
H
7
L
H
H
H
H
H
H
H
H
H
H
L
H
H
8
H
L
L
L
H
H
H
H
H
H
H
H
L
H
9
H
L
L
H
H
H
H
H
H
H
H
H
H
L
H
L
H
L
H
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
L
H
H
H
H
H
H
H
H
H
H
Invalid
H
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H; high level, L; low level
Block Diagram
A
A
A
B
B
Inputs
B
C
C
C
D
D
D
0Y
1Y
2Y
3Y
4Y
Outputs
5Y
6Y
7Y
8Y
9Y
Absolute Maximum Ratings
Item
Symbol
Ratings
Unit
Supply voltage
Input voltage
VCC
7
V
VIN
7
V
Power dissipation
Storage temperature
PT
400
mW
Tstg
–65 to +150
°C
Note: Voltage value, unless otherwise noted, are with respect to network ground terminal.
Rev.3.00, Jul.22.2005, page 2 of 6


Part Number HD74LS42P
Description BCD-to-Decimal Decoder
Maker Renesas
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HD74LS42P Datasheet PDF






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