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Dual, Quad, and Hex High-Speed
Differential ESD-Protection ICs
Layout Recommendations
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
input terminal, I/O_, and the protected signal line.
2) Use separate planes for power and ground to reduce
parasitic inductance and to reduce the impedance to
the power rails for shunted ESD current.
3) Ensure short low-inductance ESD transient return
paths to GND and V CC .
4) Minimize conductive power and ground loops.
5) Do not place critical signals near the edge of the PC
6) Bypass V CC to GND with a low-ESR ceramic capaci-
tor as close to V CC as possible.
7) Bypass the supply of the protected device to GND
with a low-ESR ceramic capacitor as close to the
supply pin as possible.
WLP Applications Information
For the latest application details on WLP 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, refer to Application
Note 1891: Wafer-Level Packaging (WLP) and Its
Applications.
Chip Information
PROCESS: BiCMOS
board.
V CC
L2
Typical Operating Circuit
L1
I/0 LINE
I/0
PROTECTED LINE
V CC
I/0_
V CC
PROTECTED
CIRCUIT
NEGATIVE ESD-
CURRENT
PULSE
PATH TO
0.1 μ F
0.1 μ F
GROUND
D1
I/O_
V C
PROTECTED
D2
CIRCUIT
MAX3205E
MAX3207E
MAX3208E
GND
Figure 6. Layout Considerations
L3
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7
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相关代理商/技术参数
MAX3205EATE+T 功能描述:TVS二极管阵列 6Ch Differential ESD Protection IC RoHS:否 制造商:Littelfuse 极性: 通道:4 Channels 击穿电压: 钳位电压:11.5 V 工作电压:2.5 V 峰值浪涌电流:20 A 安装风格:SMD/SMT 端接类型:SMD/SMT 系列: 最小工作温度:- 40 C 最大工作温度:+ 85 C
MAX3205EATE-T 功能描述:TVS二极管阵列 RoHS:否 制造商:Littelfuse 极性: 通道:4 Channels 击穿电压: 钳位电压:11.5 V 工作电压:2.5 V 峰值浪涌电流:20 A 安装风格:SMD/SMT 端接类型:SMD/SMT 系列: 最小工作温度:- 40 C 最大工作温度:+ 85 C
MAX3205EAWL+T 功能描述:TVS二极管阵列 Dual Quad and Hex High-Speed Differential ESD-Protection ICs RoHS:否 制造商:Littelfuse 极性: 通道:4 Channels 击穿电压: 钳位电压:11.5 V 工作电压:2.5 V 峰值浪涌电流:20 A 安装风格:SMD/SMT 端接类型:SMD/SMT 系列: 最小工作温度:- 40 C 最大工作温度:+ 85 C
MAX3205EETE+ 功能描述:TVS二极管阵列 6Ch Differential ESD Protection IC RoHS:否 制造商:Littelfuse 极性: 通道:4 Channels 击穿电压: 钳位电压:11.5 V 工作电压:2.5 V 峰值浪涌电流:20 A 安装风格:SMD/SMT 端接类型:SMD/SMT 系列: 最小工作温度:- 40 C 最大工作温度:+ 85 C
MAX3205EETE+T 功能描述:TVS二极管阵列 6Ch Differential ESD Protection IC RoHS:否 制造商:Littelfuse 极性: 通道:4 Channels 击穿电压: 钳位电压:11.5 V 工作电压:2.5 V 峰值浪涌电流:20 A 安装风格:SMD/SMT 端接类型:SMD/SMT 系列: 最小工作温度:- 40 C 最大工作温度:+ 85 C
MAX3206EEBL 制造商:Maxim Integrated Products 功能描述:LOW-CAPACITANCE 2/6-CHANNEL +/-15 - Rail/Tube
MAX3206EEBL+T 功能描述:TVS二极管阵列 RoHS:否 制造商:Littelfuse 极性: 通道:4 Channels 击穿电压: 钳位电压:11.5 V 工作电压:2.5 V 峰值浪涌电流:20 A 安装风格:SMD/SMT 端接类型:SMD/SMT 系列: 最小工作温度:- 40 C 最大工作温度:+ 85 C
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