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NXP Semiconductors
IP4234CZ6
Single USB 2.0 ESD protection to IEC 61000-4-2 level 4
6. Characteristics
Table 5. Characteristics
T amb = 25 ° C unless otherwise speci?ed.
Symbol
Parameter
Conditions
Min
Typ
Max Unit
C (I/O-GND) input/output to ground pins 1, 3, 4, 6; V I = 0 V;
[1]
-
2.5
-
pF
capacitance
f = 1 MHz; V CC = 3.0 V
C (zd-GND)
Zener diode to ground pin 5 to pin 2; V I = 0 V; f = 1 MHz;
[1]
-
40
-
pF
capacitance
V CC = 3.0 V
I LR
reverse leakage
pins 1, 3, 4, 6 to ground;
-
-
100
nA
current
V I = 3.0 V
V BRzd
Zener diode
pin 5 to pin 2; I = 1 mA
6
-
9
V
breakdown voltage
V F
forward voltage
[1]
-
0.7
-
V
R s
series resistance
T case = 25 ° C
[1]
-
0.5
-
?
[1]
Guaranteed by design.
7. Application information
7.1 Universal serial bus 2.0 protection
The IP4234CZ6 is optimized to protect a USB 2.0 port from ESD. The device is capable of
protecting both USB data lines and the V BUS supply. A typical application is shown in
Figure 1 .
V BUS
USB 2.0/
IEEE1394
6
R
5
R
4
D ?
TRANSCEIVER
D+
Fig 1.
1
Typical application of IP4234CZ6
2
3
GND
001aaj951
To avoid a short circuit on the data lines when V BUS is shut down, a back drive protection
diode can be attached to the IP4234CZ6.
IP4234CZ6_1
? NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 01 — 16 April 2009
3 of 9
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