1
PS8709B 07/22/04
Features
R
ON
is 4 typical
Low bit-to-bit skew: 200ps
Low crosstalk: 27dB @ 250MHz
Low Current Consumption: 20A
Near-Zero propagation delay: 250ps
Switching speed: 9ns
Channel On-Capacitance: 9.5pF (typical)
V
CC
Operating Range: +3.0V to +3.6V
ESD>2000V . . . Human Body Model
>500 MHz bandwidth (or data frequency)
Packaging (Pb-free & Green available):
48-pin, 240-mil wide plastic TSSOP (A)
Applications
Routes physical layer signals for high bandwidth
digital video
Description
Pericom Semiconductor's PI3DBV series of logic circuits are
produced using the Company's advanced sub-micron CMOS
technology, achieving industry leading performance.
The PI3DBV40 is a 8- to 4-channel multiplexer/demultiplexer.
Industry leading advantages include a propagation delay of less
than 250ps, resulting from its low channel resistance and I/O
capacitance. The device multiplexes differential outputs from a
video source to one of two corresponding outputs or switches two
inputs to a common display. The switch is bidirectional and offers
little or no attenuation of the high-speed signals at the outputs. It
is designed for low bit-to-bit skew, high channel-to-channel noise
isolation and is compatible with various standards, such as LVDS
and TMDS.
Block Diagram
Pin Description
PI3DBV40
3.3V, Wide Bandwidth, 4-Channel,
2:1 Mux/DeMux Video Switch with Single Enable
0
I
1
1
I
1
GND
0
I
2
1
I
2
GND
2
I
1
3
I
1
GND
2
I
2
3
I
2
GND
V
DD
4
I
1
5
I
1
GND
4
I
2
5
I
2
GND
6
I
1
7
I
1
GND
6
I
2
7
I
2
V
DD
Y
0
GND
Y
1
GND
V
DD
GND
Y
2
GND
Y
3
GND
V
DD
GND
NC
Y
4
GND
Y
5
GND
V
DD
GND
Y
6
GND
Y
7
SEL
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
SEL
Y
7
Y
6
Y
5
Y
4
Y
3
Y
2
Y
1
Y
0
1
I
1
0
I
1
1
I
2
0
I
2
3
I
1
2
I
1
3
I
2
2
I
2
5
I
1
4
I
1
5
I
2
4
I
2
7
I
1
6
I
1
7
I
2
6
I
2
2
PS8709B 07/22/04
PI3DBV40
3.3V, Wide Bandwidth, 4-Channel,
2:1 Mux/DeMux Video Switch with Single Enable
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
N
I
1
L
Y
N
to
N
I
2
H
DC Electrical Characteristics for Video 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
VCC = 0V, VY = 0V, VI 3.6
-
-
5
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., VIN @ 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
PS8709B 07/22/04
PI3DBV40
3.3V, Wide Bandwidth, 4-Channel,
2:1 Mux/DeMux Video Switch with Single Enable
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.
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
f = 250MHz, See Fig. 2
-
-27
-
dB
O
IRR
OFF Isolation
f = 250MHz, See Fig. 3
-
-32
-
BW
Bandwidth 3dB
See Fig. 1, Fig. 4
-
500
-
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.
Power Supply Characteristics
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 A and B pins at indicated current through the switch. On-Resistance is determined by the lower of the
voltages on the two (A & B) pins.
4. This parameter is determined by device characterization but is not production tested.
5. Measured on worst case corner pin.
Capacitance
(T
A
= 25C, f = 1MHz)
Parameters
(4)
Description
Test Conditions
Typ.
Max.
Units
C
IN
Input Capacitance
V
IN
= 0V
3.1
3.6
pF
C
OFF
Port I Capacitance, Switch OFF
2.8
6.0
C
ON
Switch Capacitance, Switch ON
9.5
(5)
10.9
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 YN, IN
0.5
-
15
t
PHZ
, t
PLZ
Line Disable Time - SEL to YN, IN
0.5
-
9
t
SK(o)
Output Skew between center port (Y4 to Y5) 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
4
PS8709B 07/22/04
PI3DBV40
3.3V, Wide Bandwidth, 4-Channel,
2:1 Mux/DeMux Video Switch with Single Enable
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. All input impulses are supplied by generators having the following characteristics: f = 10 MHz, Z
O
= 50, t
R
2.5ns, t
F
2.5ns.
4. The outputs are measured one at a time with one transition per measurement.
Test Circuit for Dynamic Electrical Characteristics
PI3DBV40
T
R
S
HP11667A
50-ohm
50-ohm
50-ohm
CL = See Graph Fig 4
HP4396B
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
Figure 1. Bandwidth -3dB Testing
R
T
10pF
C
L
V
CC
V
IN
V
OUT
200-ohm
200-ohm
6.0V
Pulse
Generator
D.U.T
5
PS8709B 07/22/04
PI3DBV40
3.3V, Wide Bandwidth, 4-Channel,
2:1 Mux/DeMux Video Switch with Single Enable
Figure 2. Crosstalk Test Setup
Figure 3. Off Isolation Tets Setup
PI3DBV40
T
R
S
HP11667A
50
50
50
HP4396B
100
100
PI3DBV40
T
R
S
HP11667A
50
50
50
HP4396B
100
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