Datasheet > A75240

A75240

更新时间： 2024-11-23 03:17:03

品牌	Logo	应用领域
德州仪器 - TI		瞬态抑制器
页数	文件大小	规格书
9页	224K
描述
USB PORT TRANSIENT SUPPRESSORS

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中文翻译

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A75240 数据手册

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www.ti.com

SLLS266F − FEBRUARY 1997 − REVISED JULY 2004

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FEATURES

APPLICATIONS

Design to Protect Submicron 3-V or 5-V

Circuits from Noise Transients

Port ESD Protection Capability Exceeds:

− 15-kV Human Body Model

− 2-kV Machine Model

Available in a WCSP Chip-Scale Package

Stand-Off Voltage . . . 6.0 V Min

Low Current Leakage . . . 1 µA Max at 6 V

Low Capacitance . . . 35 pF Typ

USB 1.1 Host, Hub, or Peripheral Ports

SN65220YZB

(Size: 925 mm x 925 mm + 6 mm)

(TOP VIEW)

SN65220DBV

(TOP VIEW)

†

GND

DESCRIPTION

NC − No internal connection

†

When read horizontally, Pin 1 is the bottom left pin.

The SN65220 is a single transient voltage suppressor and

the SN65240 and SN75240 are dual transient voltage

suppressors designed to provide electrical noise transient

protection to Universal Serial Bus (USB) 1.1 ports. Note

that the input capacitance of the device makes it

unsuitable for high-speed USB 2.0 applications.

SN65240P, SN65240PW

SN75240P, SN75240PW

(TOP VIEW)

GND

Any cabled I/O can be subjected to electrical noise

transients from various sources. These noise transients

can cause damage to the USB transceiver and/or the USB

ASIC if they are of sufficient magnitude and duration.

GND

USB ports are typically implemented in 3-V or 5-V digital

CMOS with very limited ESD protection. The SN65220,

SN65240, and SN75240 can significantly increase the

port ESD protection level and reduce the risk of damage

to the circuits of the USB port.

CURRENT vs VOLTAGE

7.5

The IEC1000-4-2 ESD performance of the SN65220,

SN65240, and SN75240 is measured at the system level.

Therefore, system design impacts the results of these

tests. A high compliance level may be attained with proper

board design and layout.

2.5

EQUIVALENT SCHEMATIC DIAGRAM

A or C

−2.5

−5

−7.5

−10

GND

−10

−5

Voltage − V

B or D

NOTE A: Typical current versus voltage curve was derived

using the IEC 1.2/50-µs surge waveform.

(One Suppressor Shown)

NOTE All GND terminals should be connected to ground.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments

semiconductor products and disclaimers thereto appears at the end of this data sheet.

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中文翻译

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