IP4786CZ32 NXP Semiconductors, IP4786CZ32 Datasheet - Page 23

• Manufacturer Part Number: IP4786CZ32
• Description: DIODE, ESD, HDMI INTERFACE, SOT617
• Manufacturer: NXP Semiconductors

Specifications of IP4786CZ32

• Diode Type: HDMI ESD Interface
• Power Dissipation Pd: 50mW
• Clamping Voltage Vc Max: 8V
• Operating Voltage: 5V
• Diode Case Style: HVQFN
• No. Of Pins: 32
• External Depth: 5.1mm
• External Length /: RoHS Compliant

NXP Semiconductors
IP4786CZ32
Product data sheet
11.6 Backdrive protection
The HDMI connector contains various signals which can partly supply current into an
HDMI device that is powered down.
Typically, the DDC lines and the CEC signals can force significant current back into the
powered-down rails as shown in
system, and possible damage. The IP4786CZ32 prevents this backdrive condition
whenever the I/O voltage is greater than the local supply.
Fig 25. CEC module
Fig 26. Generalized backdrive protection
All information provided in this document is subject to legal disclaimers.
HDMI source
HDMI ASIC
CEC_CON
Rev. 1 — 15 April 2011
ESD_BYPASS
DVI and HDMI interface ESD and overcurrent protection
supply off
Figure
backdrive current
26 kΩ
26, causing power-on reset problems with the
V
CC(5V0)
3V3
V
CC(SYS)
5 V
10 kΩ
I
2
CEC_SYS
018aaa108
C-bus ASIC
HDMI sink
018aaa109
IP4786CZ32
© NXP B.V. 2011. All rights reserved.
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