VGA

Graphics

(3.3V)

VGA

Graphics

(3.3V)

Logic Control

TS5V522C

VGA Connector

R

G

B

H.Sync

V.Sync

SDA

SCL

Docking Station

Connector

R

G

B

H.Sync

V.Sync

SDA

SCL

CBT3257C

VCC = + 5V

VCC = + 3.3V

VCC = + 5V

Design Notes:

N-Channel FET Switch allow to pull up desired Vcc Level not exceeding the

Vcc of FET Switch

2. VGA (H.Sync, V.Sync) are TTL/CMOS Type from the source of V ideo and it may

required pull up to achieve as high as 5V Signal level to meet VGA Specifications too.

SW

SW

SW

SW

TS5V522C

www.ti.com

SCDS317

– MARCH 2011

Figure 1. Typical Design Examples for Dual VGA Source Signal Exchange

Figure 2. Typical Design Example for Level Shifting with N-Channel FET Switch

Copyright

© 2011, Texas Instruments Incorporated

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