VBUS054B-HS3
Vishay Semiconductors
120
200
150
100
50
acc. IEC 61000-4-2
Pin 1, 3, 4 or 6 to Pin 2
100
80
60
40
20
0
+ 8 kV
contact discharge
acc. IEC 61000-4-2
contact discharge
0
V
C-ESD
Pin 1, 3, 4, 6 to Pin 2
- 50
- 100
- 150
- 200
- 250
Pin 2 to Pin 1, 3, 4 or 6
- 20
- 10 0 10 20 30 40 50 60 70 80 90
0
5
10
15
20
20555
20553
VESD (kV)
t (ns)
Figure 7. Typical Clamping Performance at + 8 kV
Contact Discharge (acc. IEC 61000-4-2)
Figure 9. Typical Peak Clamping Voltage at ESD
Contact Discharge (acc. IEC 61000-4-2)
20
140
Pin 1, 3, 4 or 6 to Pin 2
acc. IEC 61000-4-2
120
0
contact discharge
100
- 20
- 40
- 60
Pin 5 to Pin 2
80
60
40
20
0
VC-ESD
- 80
acc. IEC 61000-4-2
- 100
- 120
- 140
- 160
- 8 kV
contact discharge
- 20
- 40
- 60
- 80
Pin 2 to Pin 5
5
0
10
15
20
- 10
0
10 20 30 40 50 60 70 80 90
20554
20556
VESD (kV)
t (ns)
Figure 8. Typical Clamping Performance at - 8 kV
Contact Discharge (acc. IEC 61000-4-2)
Figure 10. Typical Peak Clamping Voltage at ESD
Contact Discharge (acc. IEC 61000-4-2)
Application Note:
With the VBUS054B-HS3 a double, high speed USB-port or up to 4 other high speed signal or data lines can
be protected against transient voltage signals. Negative transients will be clamped close below the ground level
while positive transients will be clamped close above the 5 V working range. An avalanche diode clamps the
supply line (V
at pin 5) to ground (pin 2). The high speed data lines, D , D , D and D , are connected
BUS
1+ 2+ 1- 2-
to pin 1, 3, 4 and 6. As long as the signal voltage on the data lines is between the ground- and the V
-level,
BUS
the low capacitance PN-diodes offer a very high isolation to V
, ground and to the other data lines. But as
BUS
soon as any transient signal exceeds this working range, one of the PN-diodes starts working in the forward
mode and clamps the transient to ground or to the avalanche breakthrough voltage level of the Z-diode
between pin 5 and pin 2.
t
w
i
R
E
C
E
I
V
E
R
VBUS
D1+
D1-
n
6
1
5
2
4
3
U
S
B
-
P
o
r
D2+
D2-
IC
t
GND
20399
www.vishay.com
4
Document Number 81586
Rev. 1.4, 07-Oct-08
For technical support, please contact: ESD-Protection@vishay.com
VISHAY [ VISHAY ]
