SN54HC42, SN74HC42
4 LINE TO 10 LINE DECODERS (1 of 10)
SCLS091D − DECEMBER 1982 − REVISED SEPTEMBER 2003
D
D
D
D
D
Wide Operating Voltage Range of 2 V to 6 V
Outputs Can Drive Up To 10 LSTTL Loads
Low Power Consumption, 80-µA Max I
CC
Typical t
pd
= 14 ns
±4-mA
Output Drive at 5 V
SN54HC42 . . . J OR W PACKAGE
SN74HC42 . . . D, N, OR NS PACKAGE
(TOP VIEW)
D
Low Input Current of 1
µA
Max
D
Full Decoding of Input Logic
D
All Outputs Are High for Invalid BCD
D
Conditions
Also for Applications as 3-Line to 8-Line
Decoders
SN54HC42 . . . FK PACKAGE
(TOP VIEW)
NC − No internal connection
description/ordering information
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.
ORDERING INFORMATION
TA
PDIP − N
PACKAGE†
Tube of 25
Tube of 40
−40°C to 85 C
−40 C 85°C
SOIC − D
SOP − NS
CDIP − J
−55 C 125°C
−55°C to 125 C
CFP − W
LCCC − FK
Reel of 2500
Reel of 250
Reel of 2000
Tube of 25
Tube of 150
Tube of 55
ORDERABLE
PART NUMBER
SN74HC42N
SN74HC42D
SN74HC42DR
SN74HC42DT
SN74HC42NSR
SNJ54HC42J
SNJ54HC42W
SNJ54HC42FK
HC42
SNJ54HC42J
SNJ54HC42W
SNJ54HC42FK
HC42
TOP-SIDE
MARKING
SN74HC42N
† Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are
available at www.ti.com/sc/package.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
6
GND
NC
7
8
On products compliant to MIL PRF 38535, all parameters are tested
unless otherwise noted. On all other products, production
processing does not necessarily include testing of all parameters.
0
1
2
3
4
5
6
GND
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
V
CC
A
B
C
D
9
8
7
1
0
NC
V
CC
A
2
3
NC
4
5
4
5
6
7
8
3 2 1 20 19
18
17
16
15
14
9 10 11 12 13
B
C
NC
D
9
Copyright
2003, Texas Instruments Incorporated
1
TI [ TEXAS INSTRUMENTS ]
