Document
STMAV335
Low ON Resistance Triple, SP3T, Wide-Bandwidth Video Switch
Features
■ Bi-directional operation
■ 3x3 input/3output channels analog video
switch
) ■ Wide bandwidth 300MHz t(s ■ Low 4Ω switch resistance between two ports uc ■ Excellent RON matching between channels d ■ Minimal propagation delay through the switch ro ■ Low quiescent current consumption te P ■ VCC Operating Range: 4.0V to 5.5V le ■ Zero bounce in flow-through mode o ■ Control inputs compatible with TTL level bs ■ Data and control inputs provide the undershoot O clamp diode - ■ High ESD rating: > 2kV HBM t(s) ■ –40°C to 85°C operating temperature range c ■ Suitable for both RGB and Component-Video u Switching rod ■ Available in a small TSSOP16 package P Applications lete ■ Advanced TVs o ■ Front projectors bs ■ LCD Monitors O■ Notebook PCs
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 (RON) of the 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 practically no attenuation of the high-speed signals at the outputs, thus preserving the signal integrity to pass stringent requirements.
Moreover the device reduces the overall BOM costs by eliminating the need for more costly multi input-output controllers.
■ DVD Players
Order Codes
Part Number STMAV335
Temperature Range –40°C to +85°C
Package TSSOP16
Comments STMAV335TTR
January 2006
Rev. 1 1/21
www.st.com
21
Contents
STMAV335
1
Summary Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1 Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2
Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3
Application Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.1 Power Supply Sequencing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
ct(s) 4
Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
rodu 5
Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
te P 6
AC Loading and Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
sole 7
Test Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
- Ob 8
Package Mechanical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Obsolete Product(s) 9
Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
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STMAV335
1 Summary Description
1 Summary Description
1.1 Functional Description
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 Diagram
Obsolete Product(s)
-
Obsolete
Product(s)
3/21
2 Pin Configuration
2 Pin Configuration
STMAV335
Figure 2. Pin Configuration (Top View )
SEL1 1 Y1 2
16
VCC
15 SEL2
Y2 3
14 Y/R
R4
t(s) Pb1 5
uc Pb2 6
rod G
7
P Pr/B 8
13 Pb/G 12 GND 11 Pr1 10 Pr2 9B
bsolete Table 1. Pin Description
O Symbol
Type
t(s) - SEL1, SEL2 uc Y/R, Pb/G, Pr/B rod Y1, Pb1, Pr1 P Y2, Pb2, Pr2
te R, G, B leVCC ObsoGND
IN
IN/OUT IN/OUT IN/OUT IN/OUT
Name and Functions
Bus Switch Enable. Tie to VCC through a pull-up resistor. The minimum value of the resistor is determined by the current-sinking capability of the driver. Analog Video I/Os Component 1; Analog Video I/Os Component 2; Analog Video I/Os RGB or Component 3; Analog Video I/Os Power supply
Ground
Table 2. Truth Table
SEL1
SEL2
Selection
0
0
Component = YPbPr1
0
1
Component = YPbPr2
1
0
Component = RGB
1
1
Switch disabled; external pull up resistor recommended
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STMAV335
3 Application Diagrams
Figure 3. STMAV335 used in LCD TV as a 3-to-1 analog video switch
3 Application Diagrams
Obsolete Product(s) - Obsolete Product(s) 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 VCC before applying any signals to the input/output or control pins.
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4 Maximum Ratings
4 Maximum R.