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| CD54HC4351 Datasheet, PDF (3/20 Pages) Texas Instruments – High-Speed CMOS Logic Analog Multiplexers/Demultiplexers with Latch | |||
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CD54HC4351, CD74HC4351, CD74HCT4351, CD74HC4352
Functional Diagram
S0 13
S1 12
S0
S0
LATCHES S1
S1
CD74HC4352
A CHANNELS IN/OUT
VCC
A3 A2 A1 A0
15 19 18 16
20
TG
TG
TG
BINARY
TG
LE 11
LOGIC
LEVEL
CONVERSION
TO
1 OF 4
DECODER
WITH
TG
ENABLE
A COMMON
17 OUT/IN
B COMMON
4 OUT/IN
TG
E1 7
E2 8
10
9
GND
VEE
TG
TG
526 1
B0 B1 B2 B3
B CHANNELS IN/OUT
TRUTH TABLE
CD74HC4352
INPUT STATES
(NOTE 2)
âONâ
SWITCHES
E1
E2
S1
S0
LE = H
L
H
L
L
A0, B0
L
H
L
H
A1, B1
L
H
H
L
A2, B2
L
H
H
H
A3, B3
H
L
X
X
None
H = High Voltage Level, L = Low Voltage Level, X = Donât Care
NOTE:
2. When Latch Enable is âLowâ channel-select data is latched and
switches cannot change state.
FROM
SELECT
LOGIC
An (Bn)
IN/OUT
P
VCC
N
N
N
P
VCC
N
VEE
FIGURE 2. DETAIL OF ONE CD74HC4352 SWITCH
3
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