Rainbow Electronics MAX4885AE - Manual

_______________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
High-Bandwidth, VGA 2:1 Switch
with ±15kV ESD Protection
MAX4885AE
General Description
The MAX4885AE integrates high-bandwidth analog
switches, level-translating buffers, and level-translating
FET switches to implement a complete 2:1 multiplexer
for VGA signals. The device provides three very high-
frequency 900MHz (typ) SPDT switches for RGB signals,
two low-frequency clamping switches for the DDC sig-
nals, a pair of level-translating buffers for the H_ and V_
signals, and integrated extended ESD protection.
Horizontal and vertical synchronization (H_/V_) inputs
feature level-shifting buffers to support low-voltage
controllers and standard 5V-TTL-compatible monitors,
meeting the VESA requirement. Display Data Channel
(DDC), consisting of SDA_ and SCL_, are FET switches
that protect the low-voltage VGA source from potential
damage from high-voltage presence on the monitor
while reducing capacitive load.
All seven output terminals of the MAX4885AE feature
high-ESD protection to Q15kV Human Body Model
(HBM) (see the Pin Description). All other pins are pro-
tected to Q2kV Human Body Model (HBM).
The MAX4885AE is specified over the extended -40NC to
+85NC temperature range, and is available in a space-
saving, 28-pin, 4mm x 4mm TQFN package.
Applications
Notebook Computer—MXM/Switchable Graphics
KVM for Servers
Features
S
Low 5I (typ) On-Resistance (R_, G_, B_ Signals)
S
Low 5.5pF (typ) On-Capacitance (R_, G_, B_
Signals)
S
Independent, Selectable Logic Inputs for
Switching
S
Similar Pin Configuration to MAX4885
S
Ultra-Small, 28-Pin (4mm x 4mm) TQFN Package
S Q
15kV ESD HBM
19-5022; Rev 0; 10/09
Typical Operating Circuit
Ordering Information
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
EVALUATION KIT
AVAILABLE
MAX4885AE
R0, G0, B0
H0, V0
SDA0, SCL0
GND
V
L
V
CC
3
2 3
2
2
R1, G1, B1
H1, V1
SDA1, SCL1
2
MXM
MODULE
VGA
PORT
3
2
R2, G2, B2
H2, V2
SDA2, SCL2
2
INTERNAL
GRAPHICS
SEL1
SEL2
CPU
1 μF 1 μF
+3.3V +5V
PART TEMP RANGE PIN-PACKAGE
MAX4885AEETI+ -40NC to +85NC 28 TQFN-EP*