Datasheet > ST1394

ST1394

更新时间： 2025-08-07 21:55:43

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		二极管
页数	文件大小	规格书
6页	165K
描述
IEEE1394 ONE PORT CABLE TERMINATION NETWORK WITH ESD PROTECTION DIODES

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ST1394 数据手册

ST1394

IEEE1394 ONE PORT CABLE TERMINATION

NETWORK WITH ESD PROTECTION DIODES

IPAD™

MAIN APPLICATIONS

TPB+

IEEE1394 line termination on:

TPA-

TpBias

■

Desktops

Notebooks

Digital Camcorders

External storage drive

Set Top Box

139

TPB-

GND

TPA-

FEATURES

SOT23-6L

(Plastic)

■

Line termination for 2 twisted pairs TPA and

TPB

■

The device complies with IEEE1394 require-

ment for differential and common more imped-

ance on TPA and TPB line

Table 1: Order Code

Part Number

Marking

■

Monolithic device with complete termination for

one IEEE1394 connection

ST1394-01SC6

139

DESCRIPTION

The ST1394-01SC6 is an integrated termination

network that optimizes board layout of the PHY

layer in IEEE1394 one port cable application.

This monolithic device is tested, according to ESD

requirement described in IEC61000-4-2 standard

level 2. ST1394-01SC6 device ruggedness limits

overvoltage at the 1394 tranceiver inputs and out-

puts below acceptable limits.

Figure 1: Pinout Configuration

TPA+

TpBias

The ST1394-01SC6 implements IEEE1394

recommendation for line termination of TPA and

TPB differential lines. Excellent matching of the

termination resistor will minimize common mode

noise that is needed to improve communication

speed.

GND

TPA-

TPB-

TPB+

BENEFITS

Zener

Capacitance

Lines TPA+ TPA- TPB+ TPB- Rpd GND

■

Resistor matching between TPA / TPB lines.

Resistor matching between TPA+ / TPA-

Single chip devise versus 11 discretes

No need for additional overvoltage protection

device

Names

Value

R12

5pF

Max.

55Ω 55Ω 55Ω 55Ω 55Ω 250pF

Tolerance Typ. Typ. Typ. Typ. 20% 20%

Matching between 55Ω

Matching

Resistor at 1% max

■

High level of integration

TM: IPAD is a trademark of STMicroelectronics.

October 2004

REV. 2

1/6

12 3 4 5 6

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