Datasheet > ESDR7534W1T2G

ESDR7534W1T2G

更新时间： 2023-09-03 20:30:25

品牌	Logo	应用领域
安森美 - ONSEMI		/
页数	文件大小	规格书
7页	163K
描述
ESD 保护器，4 线路，采用 SC88 封装

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中文翻译

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ESDR7534W1T2G 数据手册

ESDR7534

APPLICATIONS INFORMATION

Option 2

The new ESDR7534 is a low capacitance surge protection

diode array designed to protect sensitive electronics such as

communications systems, computers, and computer

peripherals against damage due to ESD events or transient

overvoltage conditions. Because of its low capacitance, it

can be used in high speed I/O data lines. The integrated

design of the ESDR7534 offers low capacitance steering

Protection of four data lines with bias and power supply

isolation resistor.

I/O 1

I/O 2

diodes and an internal surge protection diode (V diode)

10 k

integrated in a single package. If a transient condition

occurs, the steering diodes will drive the transient to the

positive rail of the power supply or to ground. The surge

protection device protects the power line against

overvoltage conditions to avoid damage to the power supply

and any downstream components.

I/O 3

I/O 4

ESDR7534 Configuration Options

The ESDR7534 can be isolated from the power supply by

The ESDR7534 is able to protect up to four data lines

against transient overvoltage conditions by driving them to

a fixed reference point for clamping purposes. The steering

diodes will be forward biased whenever the voltage on the

connecting a series resistor between pin 5 and V . A 10 kW

resistor is recommended for this application. This will

maintain a bias on the V and steering diodes, reducing their

capacitance.

protected line exceeds the reference voltage (V or

+ V ). The diodes will force the transient current to

Option 3

bypass the sensitive circuit.

Protection of four data lines using the V diode as

reference.

Data lines are connected at pins 1, 3, 4 and 6. The negative

reference is connected at pin 2. This pin must be connected

directly to ground by using a ground plane to minimize the

PCB’s ground inductance. It is very important to reduce the

PCB trace lengths as much as possible to minimize parasitic

inductances.

I/O 1

I/O 2

Option 1

Protection of four data lines and the power supply using

as reference.

I/O 1

I/O 2

I/O 3

I/O 4

In applications lacking a positive supply reference or

those cases in which a fully isolated power supply is

required, the V can be used as the reference. For these

applications, pin 5 is not connected. In this configuration,

the steering diodes will conduct whenever the voltage on the

protected line exceeds the V of the I/O (CHX) pin.

I/O 3

I/O 4

For this configuration, connect pin 5 directly to the

positive supply rail (V ), the data lines are referenced to

the supply voltage. The V diode prevents overvoltage on

the supply rail. Biasing of the steering diodes reduces their

capacitance.

www.onsemi.com

1 2 345 6 7

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