NXP Semiconductors
IP4242CZ6
ESD protection for high-speed interfaces
6. Application information
The IP4242CZ6 is designed mainly to provide high-level ESD protection for high-speed
serial data buses such as HDMI, DVI, DisplayPort, USB2.0 and other LVDS data lines.
It is recommended that when designing the printed-circuit board, careful consideration is
given to impedance matching, and signal coupling.
An basic application diagram for the ESD protection of an HDMI interface is shown in
Figure 1 , and a USB interface in Figure 2 .
IP4242CZ6
TMDS_D2+
2
1
TMDS_CH1+
TMDS_CH1 ?
TMDS_GND
TMDS_D2 ?
IP4242CZ6
3
GND
TMDS_D1+
2
1
TMDS_CH1+
TMDS_CH1 ?
TMDS_GND
TMDS_D1 ?
IP4242CZ6
3
GND
TMDS_D0+
IP4242CZ6
2
1
3
2
1
TMDS_CH1+
TMDS_CH1 ?
GND
TMDS_CH1+
TMDS_CH1 ?
TMDS_GND
TMDS_D0 ?
TMDS_CLK+
TMDS_GND
TMDS_CLK ?
HDMI
CONNECTOR
IP4242CZ6
3
GND
CEC
2
1
TMDS_CH1+
TMDS_CH1 ?
n.c.
DDC_CLK
IP4242CZ6
3
GND
DDC_DAT
2
1
3
TMDS_CH1+
TMDS_CH1 ?
GND
GND
+5 V
HOT PLUG DETECTION
001aaj808
Fig 1.
IP4242CZ6_1
Application diagram of HDMI ESD protection using IP4242CZ6
? NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 01 — 12 March 2009
4 of 9
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