Low ON Resistance Triple, SP3T, Wide-Bandwidth Video Switch
Features
■ Bi-directional operation
■ 3x3 input/3output channels analog video
switch
■ Wide bandwidth 300MHz
■ Low 4Ω swit ch resistance betw een two ports
■ Excellent R
■ Minimal propagation delay through the switch
■ Low quiescent current consumption
■ V
■ Zero bounce in flow-through mode
■ Control inputs compatible with TTL level
■ Data and control inputs provide the undershoot
Operating Range: 4.0V to 5.5V
CC
clamp diode
■ High ESD rating: > 2kV HBM
■ –40°C to 85°C operating temperature range
■ Suitable for both RGB and Component-Video
Switching
■ Available in a small TSSOP16 package
Applications
■ Advanced TVs
■ Front projectors
■ LCD Monitors
■ Notebook PCs
■ DVD Players
matching between channels
ON
TSSOP16
Description
The STMAV335 is a bi-directional triple (3
channel) Single Pole/Triple Throw (SP3T) highspeed, low-power CMOS TTL-compatible analog
video switch designed for advanced video
applications which demand superior image
quality. The low ON Resistance (R
switch allows inputs to be connected to outputs
without adding propagation delay or generating
additional ground bounce noise.
STMAV335 is designed for very low cross-talk,
low bit-to-bit skew, high channel-to-channel noise
isolation and low I/O capacitance. The switch
offers very little or practi cally no attenuation of the
high-speed signals at the outputs, thus preserving
the signal integrity to pass stringent requiremen ts.
Moreover the device reduces the overall BOM
costs by eliminating the need for more costly multi
input-output controllers.
The STMAV335 is a high bandwidth analog video switch. Its low ON-resistance and low I/O
capacitance result in a very small propagation delay.
The combination of SEL1 and SEL2 is used to either disable or enable the desired video
channel. Refer to the truth table for the selection of the appropriate channels.
Figure 1. Functional Diagr am
3/21
2 Pin ConfigurationSTMAV335
2 Pin Configuration
Figure 2.Pin Config uration (Top View )
SEL1
SEL1
Y1
Y1Y2
Y2
R
R
Pb1
Pb1Pb2
Pb2
G
G
Pr/B
Pr/B
1
12
23
34
45
56
67
78
8
16
1615
1514
1413
1312
1211
1110
10
V
V
CC
CC
SEL2
SEL2Y/R
Y/RPb/G
Pb/GGND
GNDPr1
Pr1Pr2
Pr2B
9
9
B
Table 1.Pin Description
SymbolTypeName and Functions
Bus Switch Enable. Tie to V
SEL1, SEL2IN
Y/R, Pb/G, Pr/BIN/OUTAnalog Video I/Os
Y1, Pb1, Pr1IN/OUTComponent 1; Anal og Video I/Os
Y2, Pb2, Pr2IN/OUTComponent 2; Anal og Video I/Os
R, G, BIN/OUTRGB or Component 3; Analog Video I/Os
minimum value of t he res istor is det ermined by the cu rrent -sink ing
capability of t he driver.
Power supply
through a pull-up resis tor. The
CC
4/21
STMAV3353 Application Diagrams
3 Application Diagrams
Figure 3.STMAV335 used in LCD TV as a 3-to-1 analog video switch
Figure 4.STMAV335 used in PC as a 1-to-3 analog video switch
3.1 Power Supply Sequencing
Proper power-supply sequencing is advised for all CMOS devices. It is recommended to
always apply V
before applying any signals to the input/output or control pins.
CC
5/21
4 Maximum RatingsSTMAV335
4 Maximum Ratings
Stressing the device above the rating listed in the “A bsolu te Max imum Ratings” table may
cause permanent damage to the device. These are stress ratings only and operation of the
device at these or any other conditions above those indicated in the Operating sections of this
specification is not implied. Exposure to Absolute Maximum Rating conditions for extended
periods may affect device reliability. Refer also to the STMicroelectronics SURE Program and
other relevant quality documents.
Table 3.Absolute Maximum Ratings
T
= 25°C, VSS= 0V
A
Symbol Parameter Value Unit
V
I
ICC/I
T
CC
V
V
IN
I
IK
OUT
STG
S
GND
Supply Voltage -0.5 to + 7.0V
DC Switch Vo lt age -0.5 to + 7.0V
DC Input Voltage-0.5 to + 7.0V
DC Input Diode Current-50mA
DC Output Sink Current128mA
DC VCC/GND Current
St orage Temper ature Range-65 to 150 °C
±100mA
Note:Absolute maximum ratings are those values above which damage to the device may occur.
Functional operation under these conditions is not implied. All voltages are referenced to GND.
6/21
STMAV3355 Electrical Char acteristics
5 Electrical Characteristics
Table 4.Recommended Operating Conditions
= -20 to +70°C, V
T
A
SS
= 0V
SymbolParameter (Note 1)T est ConditionsM in.T yp.Max.Unit
V
V
V
V
OUT
t
T
Power Supply Vol tage4.05.5V
CC
Input Voltage05.5V
IN
Output Voltage05.5V
Input Rise and Fall Ti me
r, tf
Free Air Operating Temperature-40+85°C
A
ESD-Human Body Model (HBM) Note 2-2+2kV
ESD
Switch Control Input05ns/V
Switch I/O0DCns/V
Note: 1 Unused control inputs must be held HIGH or LOW. They should not float.
2 In accordance with IEC61000-4-2, level 4
Table 5.DC Electrical Characteristics
= -40°C to +85°C
T
A
V
SymbolParameterTest Conditions
Analog Signal Range502.0V
I
V
V
V
Clamp Diode Voltage
IK
HIGH Level Input Voltage4.0-5.52.0V
IH
LOW Level Input Voltage4.0-5.50.8V
IL
I
Input Leakage Curr ent
I
= -18mA
IN
0 ≤ V
≤ 5.5V
IN
0 ≤ Y/R, Pb/G, Pr/B YX ≤ VCC,
I
R
∆I
OFF
ON
I
CC
OFF-STATE Leakage
Current
Switch ON resist ance (1)
Quiescent Supply Current
Increase in I
CC
per Input
CC
PbX ≤ V
, PrX ≤ V
CC
R ≤ VCC, G ≤ VCC , B ≤ V
VIN = 1.0V, ION = 13mA
= 2.0V, ION = 26mA
V
IN
V
IN = VCC
or GND, I
One input at 3.4V
Other inputs at V
CC
CC
OUT
or GN D
CC
= 0
(V)
CC
Min.Typ.Max.Unit
4.5-1.2V
5.5±10µA
5.5±10µA
4.537Ω
4.5710Ω
5.53µA
5.52.5mA
Note: 1 Measured by the voltage drop between Y/R, Pb/G , Pr/B and YX/R, PbX/G, PrX/B pins at the
indicated current through the switch. ON Resistance is determined by the lower of the voltages
on the two.
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