Fairchild DS500802 service manual

FSAV331
Dual Channel 4:1 Video Switch

FSAV331 Dual Channel 4:1 Video Switch

April 2004
Revised August 2005

General Description

The Fairchild video switch FSAV331 is a dual 4:1 high speed
video switch which can be configured as either multiplexer or
demultiplexer. Low On Resistance allows inputs to be con­nected to outputs without adding propagation delay or generat­ing additional ground bounce noise.

When the OE Pin is LOW, S
selected B Port output. When the OE Pin is HIGH, the switch is
OPEN and a HIGH-Impedance state exists between the two
ports.

and S1 connect the A Port to th e

0

Features

O

Wide bandwidth: 300 MHz

O



73 dB non adjacent channel crosstalk at 10MHz

O



56 dB Off Isolation at 10MHz

O3:

typical On Resistance (RON)

O

Low power consumption (3uA maximum)

O

Control input: TTL compatible

Applications

O

Y/C video or CVBS video switch in LCD, plasma,
and projector displays

Ordering Code:

Order Number Package Number Package Description

FSAV331QSC MQA16A 16-Lead Quarter Size Small Outline Package (QSOP), JEDEC MO-137, 0.150" Wide
FSAV331MTC MTC16 16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide

Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code.

Logic Diagram

Connection Diagram

Truth Table

Pin Descriptions

Pin Name Description

OE1, OE

B

1

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2

S

, S

0

1

ABus A

, B2, B3, B

4

Bus Switch Enables

Select Inputs

Bus B

S1S0OE1OE

X X H X Disconnect 1A
X X X H Disconnect 2A
LLLL A = B
LHLL A = B
HLLL A = B
HH L L A = B

2

Function

1
2
3
4

Absolute Maximum Ratings(Note 1)

FSAV331

Supply Voltage (VCC)
DC Switch Voltage (Note 2)
DC Input Voltage (V

) (Note 2)

IN

DC Input Diode Current
DC Output Current 128 mA
Storage Te mperature Range (T

STG

ESD (Human Body Model) 2000V



0.5V to +7.0V



0.5V to VCC + 0.5V



0.5V to +7.0V



50 mA

)65qC to +150 qC

Recommended Operating Conditions

(Note 3)

Supply Voltage (V
Control Input Voltage 0V to V
Switch Input Voltage 0V to V
Operating Temperature
Thermal Resistance

(TSSOP) 100
(QSOP) 127

Note 1: The Absolute Maximum Ratings are those values beyond which the safety of
the device cannot be guaranteed. The device should not be operated at these limits.
The parametric values defined in the Electrical Characteristics tables are not guaran­teed at the absolute maximum rating. The Recommended Operating Conditions
tables will define the conditions for actual device operation.

Note 2: The input and output negative voltage ratings may be exceeded if the input
and output diode current ratings are observed.

Note 3: Unused control inputs must be held HIGH or LOW. They may not float.

) 4.75V to 5.25V

CC

40q

C to +85qC

q

C/W

q

C/W

CC
CC

DC Electrical Characteristics All typical value are for V

V

Symbol Parameter

V

ANALOG

V

IK

V

IH

V

IL

I

IN

I

OZ

R

ON

I

CC

Note 4: Measured by the voltage drop between A and B Pins at the indicated current through the switch. On Resistance is determined by the lower of the voltages on the two
(A or B Ports).

Analog Signal Range 4.75 - 5.25 0 2.0 V
Clamp Diode Voltage 4.75
Input Voltage HIGH 4.75 - 5.25 2.0 V
Input Voltage LOW 4.75 - 5.25 0.8 V
Control Input Leakage 5.25
OFF-STATE Leakage Current 5.25
Switch On Resistance 4.75 3.3 7.0
(Note 4) 4.75 5.0 10.0
Quiescent Supply Current 5.25 3.0

CC

(V) Min Typ Max

TA = 40 qC to +85 qC

= 5V @ 25qC unless otherwise specified.

CC

Units Conditions



1.2 V IIN = 18 mA

r

1.0

r

1.0

P

AVIN = 0V to V

P

A0 d A, B d V

:

VIN = 1V, RL = 75:, ION = 13 mA

:

VIN = 2V, RL = 75:, ION = 26 mA

P

AVIN = 0V or VCC, I

CC

CC

OUT

= 0V

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AC Electrical Characteristics

FSAV331

Symbol Parameter

t

ON

t

OFF

t

PLH

t

PHL

DG Differential Gain 4.75 to 5.25 0.26 % RL = 150:, f = 3.58MHz
DP Differential Phase 4.75 to 5.25 0.23 Degree RL = 150:, f = 3.58MHz
O

IRR

X

TALK

BW

Note 5: This specification is guaranteed by design.

Turn ON Time S-to-Bus B 4.75 to 5.25 1.0 5.3
Output Enable Time OE-to-A or B 4.75 to 5.25 1.0 5.3
Turn OFF Time S-to-Bus B 4.75 to 5.25 1.0 5.8
Output Disable Time OE-to-A or B 4.75 to 5.25 1.0 5.5

, Propagation Delay (Note 5) 4.75 to 5.25 0.1

Select-to-Bus A Delay 4.75 to 5.25 5.0

Non Adjacent OFF-Isolation 4.75 to 5.25
Non Adjacent Channel Crosstalk 4.75 to 5.25



3dB Bandwidth 4.75 to 5.25 300 MHz RL = 150

V

(V) Min Typ Max Number

CC

TA = 40 qC to +85 qC



56.0 dB f = 10MHz, RL = 150



73.0 dB RL = 150:, f = 10MHz Figure 4

Units Conditions

ns VI = 7V for t

ns VI = 7V for t

ns VI OPEN

and VI = OPEN for t

PZL

and VI = OPEN for t

PLZ

:

Capacitance

= 40 qC to +85 qC

T

Symbol Parameter

C

IN

C

ON

C

OFF

Control Pin Input Capacitance 3.0 pF VCC = 5.0V
A/B On Ca pacitance 39.0 pF VCC = 5.0, OE = 0V
Port B OFF Capacitance 5.0 pF
Port A OFF Capacitan ce 13.0 pF

A

Typ

Units Conditions

VCC and OE = 5.0V

Figure

PZH

PHZ

:

Figures

1, 2

Figures

1, 2

Figures

1, 2

Figure 3

Figure 5

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