1
PS8752A 11/01/04
Features
R
ON
is 4 typical
Low bit-to-bit skew: 200ps
Low crosstalk: 65dB @ 10MHz
Low Current Consumption: 20A
Near-Zero propagation delay: 250ps
Switching speed: 9ns
Channel On-Capacitance: 6pF (typical)
V
CC
Operating Range: +3.0V to +3.6V
ESD>2000V . . . Human Body Model
High Signal Passing bandwidth (600 MHz)
Packaging (Pb-free & Green available):
24-pin QSOP (Q)
Applications
Projection TV and LCD TV
Video consumer applications
Analog video signal processing
Description
Pericom Semiconductor's PI3V512 is a true bi-directional 5-Port 2:
1 multiplexer/demultiplexer with Hi-Z outputs that is recommended
for both RGB and composite video switching applications. With the
additional 2 ports, vertical and horizontal synchronous signals can
be switched in addition to switching the RGB and composite signals
between different components, such as DVD, VCR, PCs and etc.
The VideoSwitch can be driven from a current output RAMDAC
or voltage output composite video source.
Low On-Resistance, Low Crosstalk, Low OFF Isolation and wide
bandwidth features make it ideal for video and other applications.
Industry leading advantages include a propagation delay of less than
250ps, resulting from its low channel resistance and I/O capacitance.
The switch is bi-directional and offers little or no attenuation of the
high-speed signals at the outputs. The device also has exceptional
high current capability which is far greater than most analog switches
offered today. The PI3V512 offers a high-performance (600 MHz),
low-cost solution to switch between video sources.
Block Diagram
PI3V512
Low On-Resistance, 3.3V Wideband/Video Switch
5-Port, 2:1 Mux/DeMux
SEL
Y
C
Y
D
Y
B
Y
A
I
A
0
I
A
1
I
B
0
I
B
1
Y
E
I
E
0
I
E
1
I
D
0
I
C
0
I
C
1
I
D
1
Pin Description
I
A
0
I
A
1
I
B
0
I
B
1
GND
V
DD
I
C
0
I
D
0
I
C
1
I
D
1
I
E
0
I
E
1
V
DD
Y
A
GND
V
DD
Y
B
Y
C
GND
Y
D
V
DD
GND
Y
E
SEL
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
2
PS8752A 11/01/04
PI3V512
Low On-Resistance, 3.3V Wideband/Video Switch
5-Port 2:1 Mux/DeMux
Storage Temperature....................................65C to +150C
Supply Voltage to Ground Potential...............0.5V to +4.0V
DC Input Voltage............................................0.5V to +5.5V
DC Output Current......................................................120mA
Power Dissipation...........................................................0.5W
Note:
Stresses greater than those listed under MAXIMUM RATINGS may cause
permanent damage to the device. This is a stress rating only and func-
tional operation of the device at these or any other conditions above those
indicated in the operational sections of this specification is not implied.
Exposure to absolute maximum rating conditions for extended periods
may affect reliability.
Maximum Ratings
(Above which useful life may be impaired. For user guidelines,
not tested.)
Truth Table
Function
SEL
Y
N
to
I
N
0
L
Y
N
to
I
N
1
H
DC Electrical Characteristics for 1000 Base-T Ethernet Switching over Operating Range
(T
A
= 40C to +85C, V
CC
= 3.3V 10%)
Paramenter
Description
Test Conditions
Min. Typ.
(2)
Max. Units
V
IH
Input HIGH Voltage
Guaranteed HIGH level
2
-
-
V
V
IL
Input LOW Voltage
Guaranteed LOW level
0.5
-
0.8
V
IK
Clamp Diode Voltage
V
CC
= Max., I
IN
= 18mA
-
0.7
1.2
I
IH
Input HIGH Current
V
CC
= Max., V
IN
= V
CC
-
-
5
A
I
IL
Input LOW Current
V
CC
= Max., V
IN
= GND
-
-
5
I
OFF
Power Down Leakage Current
V
CC
= 0V, V
A
= 0V, V
B
3.6
-
-
-
R
ON
Switch On-Resistance
(3)
V
CC
= Min., 1.5V V
IN
V
CC,
I
IN
= 40mA
-
4
8
R
FLAT(ON)
On-Resistance Flatness
(4)
V
CC
= Min., V
IN
@ 1.5V and V
CC
,
I
IN
= 40mA
-
1
-
R
ON
On-Resistance match from center
ports to any other port
(4)
V
CC
= Min., 1.5V V
IN
V
CC
,
I
IN
= 40mA
-
0.9
2
3
PS8752A 11/01/04
PI3V512
Low On-Resistance, 3.3V Wideband/Video Switch
5-Port 2:1 Mux/DeMux
DC Electrical Characteristics for 10/100 Base-T Ethernet Switching over Operating Range
(T
A
= 40C to +85C, V
CC
= 3.3V 10%)
Paramenter
Description
Test Conditions
Min. Typ.
(2)
Max. Units
V
IH
Input HIGH Voltage
Guaranteed HIGH level
2.0
-
-
V
V
IL
Input LOW Voltage
Guaranteed LOW level
0.5
-
0.8
V
IK
Clamp Diode Voltage
V
CC
= Max., I
IN
= 18mA
-
0.7
1.2
I
IH
Input HIGH Current
V
CC
= Max., V
IN
= V
CC
-
-
5
A
I
IL
Input LOW Current
V
CC
= Max., V
IN
= GND
-
-
5
I
OFF
Power Down Leakage Current
V
CC
= 0V, V
A
= 0V, V
B
3.6
-
-
-
R
ON
Switch On-Resistance
(3)
V
CC
= Min., 1.25V V
IN
V
CC,
I
IN
= 10mA to 30mA
-
-
8
R
FLAT(ON)
On-Resistance Flatness
(4)
V
CC
= Min., V
IN
@ 1.25V and V
CC,
I
IN
= 10mA to 30mA
-
1.0
-
R
ON
On-Resistance match from center ports
to any other port
(4)
V
CC
= Min., 1.25V V
IN
V
CC,
I
IN
= 10mA to 30mA
-
0.9
2.0
Power Supply Characteristics
Notes:
1. For max. or min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at V
CC
= 3.3V, T
A
= 25C ambient and maximum loading.
3. Per TTL driven input (control inputs only); Y and I pins do not contribute to I
CC
.
Parameters
Description
Test Conditions
(1)
Min.
Typ.
(2)
Max.
Units
I
CC
Quiescent Power Supply Current
V
CC
= Max., V
IN
= GND or V
CC
-
-
800
A
Notes:
1. For max. or min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at V
CC
= 3.3V, T
A
= 25C ambient and maximum loading.
3. Measured by the voltage drop between Y and I pins at indicated current through the switch. On-Resistance is determined by the lower of the
voltages on the two (Y & I) pins.
4. This parameter is determined by device characterization but is not production tested.
Capacitance
(T
A
= 25C, f = 1MHz)
Parameters
(5)
Description
Test Conditions
Typ.
Max.
Units
C
IN
Input Capacitance
V
IN
= 0V
2.0
3.0
pF
C
OFF(IN0, IN1)
Port I Capacitance, Switch OFF
4.0
6.0
C
ON(Y/I)
Y/I Capacitance, Switch ON
6.0
10.0
4
PS8752A 11/01/04
PI3V512
Low On-Resistance, 3.3V Wideband/Video Switch
5-Port 2:1 Mux/DeMux
Dynamic Electrical Characteristics Over the Operating Range
(TA=-40 to +85C, VCC=3.3V10%, GND=0V)
Parameter
Description
Test Conditions
Min.
Typ.
(2)
Max.
Units
X
TALK
Crosstalk
See Test Diagram (f = 10 MHz)
-
-65
-
dB
O
IRR
OFF Isolation
-
-70
-
BW
Bandwidth 3dB
See Test Diagram (C
L
= 0 pF)
-
600
-
MHz
Notes:
1. For max. or min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Guaranteed by design.
3. The bus switch contributes no propagational delay other than the RC delay of the On-Resistance of the switch and the load capacitance. The
time constant for the switch alone is of the order of 0.25ns for 10pF load. Since this time constant is much smaller than the rise/fall times of
typical driving signals, it adds very little propagational delay to the system. Propagational delay of the bus switch when used in a system is
determined by the driving circuit on the driving side of the switch and its interactions with the load on the driven side.
Switching Characteristics
Paramenter
Description
Min.
Typ.
(2)
Max. Units
t
PD
Propagation Delay
(2,3)
-
0.25
ns
t
PZH
, t
PZL
Line Enable Time - SEL to Y
N
, I
N
0.5
-
15
t
PHZ
, t
PLZ
Line Disable Time - SEL to Y
N
, I
N
0.5
-
9
t
SK(o)
Output Skew between center port (YC to YD) to any other port
(2)
-
0.1
0.2
t
SK(p)
Skew between opposite transitions of the same output (t
PHL
- t
PLH
)
(2)
-
0.1
0.2
Bandwidth vs. Capacitance
3db Bandwidth
700
600
500
400
300
200
100
0
0 pf
10 pf
20 pf
30 pf
40 pf
50 pf
Capacitance Load
5
PS8752A 11/01/04
PI3V512
Low On-Resistance, 3.3V Wideband/Video Switch
5-Port 2:1 Mux/DeMux
Test Circuit for Electrical Characteristics
(1)
Notes:
1. C
L
= Load capacitance: includes jig and probe capacitance.
2. R
T
= Termination resistance: should be equal to Z
OUT
of the Pulse Generator
3. Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control.
Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control.
4. All input impulses are supplied by generators having the following characteristics: PRR MHz, Z
O
= 50, t
R
2.5ns, t
F
2.5ns.
5. The outputs are measured one at a time with one transition per measurement.
Test Circuit for Dynamic Electrical Characteristics
V
CC
PI3V512
T1
R1
S1
HP11667A
C
L
HP4396
Switch Positions
Test
Switch
t
PLZ
, t
PZL
(output on I side)
6.0V
t
PHZ
, t
PZH
(output on I side)
GND
Prop Delay
Open
R
T
10pF
C
L
V
CC
V
IN
V
OUT
200-ohm
200-ohm
6.0V
Pulse
Generator
D.U.T
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