M74HC4514B1R Просмотр технического описания (PDF) - STMicroelectronics
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M74HC4514B1R Datasheet PDF : 12 Pages
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M74HC4514
INPUT AND OUTPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION
PIN No
1
2, 3, 21, 22
11, 9, 10, 8,
7, 6, 5, 4, 18,
17, 20, 19,
14, 13, 16,
15
23
12
24
SYMBOL
STROBE
A to D
S0 to S15
NAME AND FUNCTION
Strobe Input
Address Inputs
Multiplexer Outputs
(Active HIGH)
INHIBIT
GND
VCC
Enable Input
Ground (0V)
Positive Supply Voltage
TRUTH TABLE
INHIBIT
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
H
X : Don’t Care
INPUTS
A
B
C
D
STROBE
SELECT OUTPUT
L
L
L
L
STROBE = "H"
S0
H
L
L
L
Refer to truth table
S1
L
H
L
L
S2
H
H
L
L
STROBE = "L"
S3
L
L
H
L Data at the negative going
S4
H
L
H
L
transition of strobe shall
be provided on the each
S5
L
H
H
L output while strobe is held
S6
H
H
H
L
low.
S7
L
L
L
H
S8
H
L
L
H
S9
L
H
L
H
S10
H
H
L
H
S11
L
L
H
H
S12
H
L
H
H
S13
L
H
H
H
S14
H
H
H
H
S15
X
X
X
X
ALL OUTPUTS "L"
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