VBUS054CD-FHI Datasheet, PDF (2/7 Pages) Vishay Siliconix – 4-Line BUS-Port ESD-Protection - Flow Through Design

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VBUS054CD-FHI
Vishay Semiconductors
ELECTRICAL CHARACTERISTICS (pin 1, 2, 4 or 5 to pin 3)
(T_amb = 25 °C, unless otherwise specified)
PARAMETER
TEST CONDITIONS/REMARKS
SYMBOL
Protection paths
Reverse stand-off voltage
Reverse voltage
Reverse current
Reverse breakdown voltage
Reverse clamping voltage
Forward clamping voltage
Capacitance
Number of lines which can be protected
Max. reverse working voltage
at I_R = 0.1 μA
at V_RWM = 5 V
at I_R = 1 mA
at I_PP = 1 A
at I_PP = I_PPM = 3.5 A
at I_PP = 1 A
at I_PP = 3.5 A
at V_R = 0 V; f = 1 MHz
N_channel
V_RWM
V_R
I_R
V_BR
V_C
V_C
V_F
V_F
C_D
MIN.
-
-
5
-
6.9
-
-
-
-
-
TYP.
-
-
-
< 0.01
7.9
9.1
11.6
1.6
3.5
0.8
MAX.
4
5
-
0.1
8.7
11
13
2.4
5
1
UNIT
lines
V
V
μA
V
V
V
V
V
pF
APPLICATION NOTE
The VBUS054CD-FHI is a four-line ESD-protection device with the characteristic of a Z-diode with a high ESD-immunity and a
very low capacitance which makes it usable for high frequency applications like USB2.0 or HDMI.
With the VBUS054CD-FHI four high speed data lines can be protected against transient voltage signals like ESD (Electro Static
Discharge). Connected to the data line (pin 1, 2 and pin 4, 5) and to ground (pin 3, 8 and 11) negative transients will be clamped
close below the ground level while positive transients will be clamped close above the 5 V working range. The clamping
behaviour of the VBUS054CD-FHI is bidirectional but asymmetrical (BiAs) and so it offers the best protection for applications
running up to 5 V.
Pin configuration:
• Pin 3, 8 and 11 are internally shorted and have to be connected to ground
• Pin 1, 2 and 4, 5 are the inputs for the data lines D₁₊ and D_1- and D₂₊ and D_2-
• Pin 6, 7 and 9, 10 are not connected internally
nc. nc. GND nc. nc.
10 9 8 7 6
USB/HDMI Interface
D1 + D1 -
D2 + D2 -
11
1 2 34 5
21326
D1 + D1 - GND D2 + D2 -
10 9 8 7 6
11
12345
D1 + D1 - GND D2 + D2 -
I/O Port Connector
21328
FLOW THROUGH DESIGN
Modern digital transmission lines can be clocked up to 480 Mbit/s (USB2.0) or 1.65 Gbit/s (HDMI).
At such high data rates the transmission lines like cables or the line traces on the PCBs have to be very homogeneous regarding
their surge impedance. This requires well defined trace dimensions as trace width and distance which have to be calculated
depending on the requested surge impedance (e.g. 50 ) and the PCB material and layer dimensions. Any device connected
to the data lines - like ESD-protection devices - have to be connected with minimal changes in these trace dimensions and
distances.
With the package in the so called “Flow Through Design” this is possible. The lines are running straight along the PCB while the
VBUS054CD-FHI is placed on top without any vias or loops.
Rev. 1.4, 31-May-12
2
Document Number: 81882
For technical questions, contact: [e-mail]
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000