- 您现在的位置：买卖IC网 > Sheet目录253 > SRDA05-4.TBT (Semtech)IC TVS ARRAY 4-LINE 5V 8SOIC
SRDA05-4 and SRDA12-4
PROTECTION PRODUCTS
Applications Information
For negative events, the bottom diode will be biased
Device Connection Options for Protection of Four
High-Speed Lines
The SRDA TVS is designed to protect four data lines
from transient overvoltages by clamping them to a
fixed reference. When the voltage on the protected
line exceeds the reference voltage (plus diode V F ) the
steering diodes are forward biased, conducting the
transient current away from the sensitive circuitry.
Data lines are connected at pins 1, 4, 6 and 7. The
negative reference is connected at pins 5 and 8.
These pins should be connected directly to a ground
plane on the board for best results. The path length is
kept as short as possible to minimize parasitic induc-
tance.
The positive reference is connected at pins 2 and 3.
The options for connecting the positive reference are
as follows:
1. To protect data lines and the power line, connect
pins 2 & 3 directly to the positive supply rail (V CC ).
In this configuration the data lines are referenced
to the supply voltage. The internal TVS diode
prevents over-voltage on the supply rail.
2. The SRDA can be isolated from the power supply by
adding a series resistor between pins 2 and 3 and
V CC . A value of 10k Ω is recommended. The
internal TVS and steering diodes remain biased,
providing the advantage of lower capacitance.
3. In applications where no positive supply reference
is available, or complete supply isolation is desired,
the internal TVS may be used as the reference. In
this case, pins 2 and 3 are not connected. The
steering diodes will begin to conduct when the
voltage on the protected line exceeds the working
voltage of the TVS (plus one diode drop).
ESD Protection With RailClamps
RailClamps are optimized for ESD protection using the
rail-to-rail topology. Along with good board layout,
these devices virtually eliminate the disadvantages of
using discrete components to implement this topology.
Consider the situation shown in Figure 1 where dis-
crete diodes or diode arrays are configured for rail-to-
rail protection on a high speed line. During positive
duration ESD events, the top diode will be forward
biased when the voltage on the protected line exceeds
the reference voltage plus the V drop of the diode.
F
Data Line and Power Supply Protection Using Vcc as
reference
Data Line Protection with Bias and Power Supply
Isolation Resistor
Data Line Protection Using Internal TVS Diode as
Reference
? 2007 Semtech Corp.
5
www.semtech.com
发布紧急采购，3分钟左右您将得到回复。
相关PDF资料
SRDA05-4R2G
TVS ARRAY LO CAP 500W 8-SOIC
SRDA3.3-4.TBT
IC TVS ARRAY 4-LINE 3.3V 8SOIC
SRDA3.3-4DR2G
IC TVS ARRAY 4-LINE 3.3V SO-8
SRL91-22UGG3-BB99
SWITCH ROCKER DPST 15A 125V
SRN91-27BB
SWITCH ROCKER DPDT 15A 125V
SRV05-4.TCT
TVS DIODE 5V 4CH BI SOT23-6
SRV05-4A.TCT
TVS DIODE 5V 4CH BI SOT23-6
SRV05-4HTG
TVS DIODE ARRAY 4CH 5V SOT23-6
相关代理商/技术参数
SRDA05-4.TBT
制造商:Semtech Corporation 功能描述:TVS DIODE
SRDA05-4.TBT-CUT TAPE
制造商:SEMTECH 功能描述:SRDA Series 20 V 8 pF SMT RailClamp?Low Capacitance TVS Diode Array - SOIC-8
SRDA05-4.TE
制造商:Semtech Corporation 功能描述:
SRDA05-4BTG
功能描述:TVS二极管阵列 4CH 30A 5V 8pF Lightning Protection
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
SRDA05-4R2
功能描述:TVS二极管阵列 6V 500W 8pF 4 Line 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
SRDA05-4R2/D
制造商:未知厂家 制造商全称:未知厂家 功能描述:Low Capacitance Surface Mount TVS for High-Speed Data Interfaces
SRDA05-4R2G
功能描述:TVS二极管阵列 LO CAPACITANCE SURF MNT TVS 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
SRDA05-4T
制造商:Semtech Corporation 功能描述:ESD Suppressor Diode Arrays 制造商:Semtech Corporation 功能描述:TVS Diode