ST STMAV335 User Manual

STMAV335

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.

) of the

ON

Order Codes

Part Number T em p erature Range Package Comments

STMAV335 –40°C to +85°C TSSOP16 STMAV335TTR

Rev . 1

January 2006 1/21

www.st.com

21

STMAV335

Contents

1 Summary Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1.1 Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2 Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

3 Application Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

3.1 Power Supply Sequencing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

4 Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

5 Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

6 AC Loading and Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

7 Test Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

8 Package Mechanical D ata . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

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 Diagr am

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2 Pin Configuration STMAV335

2 Pin Configuration

Figure 2. Pin Config uration (Top View )

SEL1

SEL1

Y1

Y1
Y2

Y2

R

R

Pb1

Pb1
Pb2

Pb2

G

G

Pr/B

Pr/B

1

1
2

2
3

3
4

4
5

5
6

6
7

7
8

8

16

16
15

15
14

14
13

13
12

12
11

11
10

10

V

V

CC

CC

SEL2

SEL2
Y/R

Y/R
Pb/G

Pb/G
GND

GND
Pr1

Pr1
Pr2

Pr2
B

9

9

B

Table 1. Pin Description

Symbol Type Name and Functions

Bus Switch Enable. Tie to V

SEL1, SEL2 IN

Y/R, Pb/G, Pr/B IN/OUT Analog Video I/Os

Y1, Pb1, Pr1 IN/OUT Component 1; Anal og Video I/Os
Y2, Pb2, Pr2 IN/OUT Component 2; Anal og Video I/Os

R, G, B IN/OUT RGB or Component 3; Analog Video I/Os

V

CC

GND 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

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

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STMAV335 3 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

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4 Maximum Ratings STMAV335

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 + 7.0 V
DC Switch Vo lt age -0.5 to + 7.0 V
DC Input Voltage -0.5 to + 7.0 V
DC Input Diode Current -50 mA
DC Output Sink Current 128 mA
DC VCC/GND Current
St orage Temper ature Range -65 to 150 °C

±100 mA

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.

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STMAV335 5 Electrical Char acteristics

5 Electrical Characteristics

Table 4. Recommended Operating Conditions

= -20 to +70°C, V

T

A

SS

= 0V

Symbol Parameter (Note 1) T est Conditions M in. T yp. Max. Unit

V

V

V

V

OUT

t

T

Power Supply Vol tage 4.0 5.5 V

CC

Input Voltage 0 5.5 V

IN

Output Voltage 0 5.5 V

Input Rise and Fall Ti me

r, tf

Free Air Operating Temperature -40 +85 °C

A

ESD-Human Body Model (HBM) Note 2 -2 +2 kV

ESD

Switch Control Input 0 5 ns/V
Switch I/O 0 DC ns/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

Symbol Parameter Test Conditions

Analog Signal Range 5 0 2.0 V

I

V
V

V

Clamp Diode Voltage

IK

HIGH Level Input Voltage 4.0-5.5 2.0 V

IH

LOW Level Input Voltage 4.0-5.5 0.8 V

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 -1.2 V

5.5 ±10 µA

5.5 ±10 µA

4.5 3 7 Ω

4.5 7 10 Ω

5.5 3 µA

5.5 2.5 mA

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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