Datasheet

NX5DV715 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2011. All rights reserved.
Product data sheet Rev. 3 — 4 November 2011 15 of 20
NXP Semiconductors
NX5DV715
Dual supply 1-of-2 VGA switch
13. Application information
The NX5DV715 provides the level shifting necessary to drive two standard VGA ports
from a graphic controller as low as 2.2 V. Internal buffers drive the H-Sync and V-Sync
signals to VGA standard TTL levels. The DDC multiplexer provides level shifting by
clamping signals to a diode drop less than V
CC(A)
(See Figure 14). Connect V
CC(A)
to 3.3 V
for normal operation, or to V
CC(B)
to disable voltage clamping for DDC signals
Fig 14. Typical operating circuit
3
2
2
3
2
2
001aan187
EN
R0, B0, G0
H0, V0
SDA0, SCL0
R1, B1, G1
SDA1, SCL1
H1, V1
+3.3 V
SEL
GND
GND or V
CC
+3.3 V +5.0 V
V
CC(A)
V
CC(B)
0.1 μF
0.1 μF
GRAPHICS
CONTROLLER
VGA
PORT
3
2
2
R2, B2, G2
SDA2, SCL2
H2, V2
VGA
PORT2