
2
PS8756C
06/29/06
PI3V314
Low On-Resistance, 3.3V High-Bandwidth
3-Port, 4:1 Mux/DeMux Video Switch
Truth Table 1(1)
Enable
Select
EN0
S1
S0
YA/YB
Function
H
X
Hi-Z
Disable
L
I0
S1-S0 = 0
L
H
I1
S1-S0 = 1
L
H
L
I2
S1-S0 = 2
L
H
I3
S1-S0 = 3
Block Diagram
IA0
EN0
S0
S1
IA1 IA2 IA3 IB0 IB1 IB2 IB3
YA
YB
IC0
EN1
S2
S3
IC1 IC2 IC3
YC
Truth Table 2(1)
Enable
Select
EN1
S3
S2
YC
Function
H
X
Hi-Z
Disable
L
I0
S3-S2 = 0
L
H
I1
S3-S2 = 1
L
H
L
I2
S3-S2 = 2
L
H
I3
S3-S2 = 3
Notes:
1. H=High Voltage Level; L=Low Voltage Level
Notes:
1. For video applications: In order to control Muxing and DeMuxing
of all the 12 to 3 channels with the same control plane, the follow-
ing connectoins need to be made on the board:
a. EN0 and EN1 need to be tied together
b. S1 and S3 need to be tied together
c. S0 and S2 need to be tied together
06-0114