MAX14895E Datasheet, PDF (1/11 Pages) Maxim Integrated Products – Enhanced VGA Port Protector DDC Outputs have Internal Pullups

19-5819; Rev 0; 3/11
EVALUATION KIT AVAILABLE
MAX14895E
Enhanced VGA Port Protector
General Description
The MAX14895E integrates level-translating buffers and
features RED, GRN, and BLU (RGB) port protection for
VGA signals.
The device has horizontal sync (SYNCH_) and vertical
sync (SYNCV_) translating buffers that convert low-level
CMOS inputs from a graphics controller to meet full 5V,
TTL-compatible outputs. Each output can drive Q10mA
and meets the VESA^SM specification. In addition, the
device translates the direct digital control (DDC) signals
to a lower level that is safe for the graphics controller.
The device features both EN and EN inputs, accepting
active-high or active-low enable inputs. The device also
switches and current limits the 5V supply to a VGA con-
nector or monitor.
The RED, GRN, and BLU terminals protect graphics con-
troller outputs against electrostatic discharge (ESD) events.
All eight outputs and EN have high-level ESD protection.
The MAX14895E is specified over the extended -40NC to
+85NC temperature range and is available in a 16-pin,
3mm x 3mm TQFN package with exposed pad.
Applications
Notebook Computers
Desktops
Servers
Graphics Cards
Benefits and Features
S Saves Power in Portable Applications
 Low Quiescent Supply Current: 430µA (typ)
S Eliminates Need for Costly External Components
 High-ESD Protection on SDA1, SCL1, SYNCH1,
SYNCV1, RED, GRN, BLU, EN, V_S
 ±15kV Human Body Model (HBM)
 ±8kV IEC 61000-4-2 Contact Discharge
S Innovative Design Enables a High Level of
Integration for Performance
 Output Current-Limit Switch with Power-Off
Protection
 Low Capacitance on RGB Ports (2.2pF typ)
 ±10mA Drive on SYNCH1, SYNCV1
S Fully Integrated Solutions Saves Space in Portable
Applications
 DDC Outputs have Internal Pullups
 3mm x 3mm, 16-Pin TQFN Package
Ordering Information appears at end of data sheet.
For related parts and recommended products to use with this part,
refer to www.maxim-ic.com/MAX14895E.related.
Typical Operating Circuit
2
2
VGA
OUTPUTS
+5V
1µF
EN
VCC
VS
1µF
EN
SYNCH0, SYNCV0 SYNCH1, SYNCV1
2
SDA0, SCL0
SDA1, SCL1
2
RED
GRN
MAX14895E
BLU
GND
VGA
PORT
VESA is a service mark of the Video Electronics Standards Association Corporation.
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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.