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STMicroelectronics Electronic Components Datasheet

M74HC42 Datasheet

BCD TO DECIMAL DECODER

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M74HC42 pdf
M74HC42
BCD TO DECIMAL DECODER
s HIGH SPEED :
tPD = 14ns (TYP.) at VCC = 6V
s LOW POWER DISSIPATION:
ICC =4µA(MAX.) at TA=25°C
s HIGH NOISE IMMUNITY:
VNIH = VNIL = 28 % VCC (MIN.)
s SYMMETRICAL OUTPUT IMPEDANCE:
|IOH| = IOL = 4mA (MIN)
s BALANCED PROPAGATION DELAYS:
tPLH tPHL
s WIDE OPERATING VOLTAGE RANGE:
VCC (OPR) = 2V to 6V
s PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 42
DESCRIPTION
The M74HC42 is an high speed CMOS BCD TO
DECIMAL DECODER fabricated with silicon gate
C2MOS technology.
A BCD code applied to the four inputs A-D selects
one of ten decimal outputs Y0 - Y9, which goes
low to fifteen gives a high level at all outputs. This
device also can be used as a 3 to LINE
DIP
SOP
TSSOP
ORDER CODES
PACKAGE
TUBE
DIP
SOP
TSSOP
M74HC42B1R
M74HC42M1R
T&R
M74HC42RM13TR
M74HC42TTR
DECODER, when the D input is assigned as a
disable input. This device is useful for code
conversion, address decoding, memory selection,
demultiplexing, or readout decoding.
All inputs are equipped with protection circuits
against static discharge and transient excess
voltage.
PIN CONNECTION AND IEC LOGIC SYMBOLS
July 2001
1/9


STMicroelectronics Electronic Components Datasheet

M74HC42 Datasheet

BCD TO DECIMAL DECODER

No Preview Available !

M74HC42 pdf
M74HC42
INPUT AND OUTPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION
PIN No
15, 14, 13,
12
1, 2, 3, 4, 5,
6, 7, 8, 9, 10,
11
8
16
SYMBOL
A, B, C, D
Y0 TO Y9
GND
Vcc
NAME AND FUNCTION
Data Inputs
Multiplexer Outputs
Ground (0V)
Positive Supply Voltage
FUNCTIONAL TABLE
CODE No
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
BCD INPUTS
DCBA
LLLL
L L LH
L LHL
L LHH
LHL L
LHLH
L HH L
L HHH
HL L L
HL LH
HLHL
H L HH
HHL L
HH L H
HHH L
HHHH
Y0 Y1
LH
HL
HH
HH
HH
HH
HH
HH
HH
HH
HH
HH
HH
HH
HH
HH
DECIMAL OUTPUTS
Y2 Y3 Y4 Y5 Y6 Y7 Y8 Y9
HHHHHHHH
HHHHHHHH
L HHHHHHH
H L HHHHHH
HH L HHHHH
HHHL HHHH
HHHH LHHH
HHHHH L HH
HHHHHH L H
HHHHHHH L
HHHHHHHH
HHHHHHHH
HHHHHHHH
HHHHHHHH
HHHHHHHH
HHHHHHHH
2/9


Part Number M74HC42
Description BCD TO DECIMAL DECODER
Maker ST Microelectronics
Total Page 9 Pages
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