MAX3208E Maxim Integrated Products, MAX3208E Datasheet - Page 7

• Manufacturer Part Number: MAX3208E
• Description: (MAX3205E - MAX3208E) Dual / Quad and Hex High-Speed Differential ESD-Protection ICs
• Manufacturer: Maxim Integrated Products

Proper circuit-board layout is critical to suppress ESD-
induced line transients (See Figure 6). The MAX3205E/
MAX3207E/MAX3208E clamp to 100V; however, with
improper layout, the voltage spike at the device can be
much higher. A lead inductance of 10nH with a 45A
current spike results in an additional 450V spike on the
protected line. It is essential that the layout of the PC
board follows these guidelines:
1) Minimize trace length between the connector or
2) Use separate planes for power and ground to reduce
3) Ensure short low-inductance ESD transient return
4) Minimize conductive power and ground loops.
5) Do not place critical signals near the edge of the PC
6) Bypass V
Figure 6. Layout Considerations
input terminal, I/O_, and the protected signal line.
parasitic inductance and to reduce the impedance to
the power rails for shunted ESD current.
paths to GND and V
board.
tor as close to V
NEGATIVE ESD-
CURRENT
PULSE
PATH TO
GROUND
V
PROTECTED LINE
GND
CC
L1
CC
to GND with a low-ESR ceramic capaci-
_______________________________________________________________________________________
CC
D1
D2
Layout Recommendations
as possible.
CC
I/O_
.
L2
L3
Dual, Quad, and Hex High-Speed
V
C
Differential ESD-Protection ICs
PROTECTED
CIRCUIT
7) Bypass the supply of the protected device to GND
For the latest application details on UCSP construction,
dimensions, tape carrier information, printed circuit
board techniques, bump-pad layout, and recommend-
ed reflow temperature profile, as well as the latest infor-
mation on reliability testing results, go to the Maxim
website at www.maxim-ic.com/ucsp for the Application
Note, UCSP—A Wafer-Level Chip-Scale Package.
DIODE COUNT:
MAX3205E: 7
MAX3207E: 3
MAX3208E: 5
PROCESS: BiCMOS
0.1 F
with a low-ESR ceramic capacitor as close to the
supply pin as possible.
V
UCSP Applications Information
CC
I/0 LINE
Typical Operating Circuit
I/0_
MAX3205E
MAX3207E
MAX3208E
Chip Information
0.1 F
V
CC
I/0
PROTECTED
CIRCUIT
7