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ST1394 Fiches technique(PDF) 1 Page - STMicroelectronics

No de pièce ST1394
Description  IEEE1394 ONE PORT CABLE TERMINATION NETWORK WITH ESD PROTECTION DIODES
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST1394 Fiches technique(HTML) 1 Page - STMicroelectronics

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ST1394
IEEE1394 ONE PORT CABLE TERMINATION
NETWORK WITH ESD PROTECTION DIODES
REV. 2
TpBias
TPA-
TPA-
TPB+
TPB-
GND
139
SOT23-6L
(Plastic)
October 2004
MAIN APPLICATIONS
IEEE1394 line termination on:
Desktops
Notebooks
Digital Camcorders
External storage drive
Set Top Box
FEATURES
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
Monolithic device with complete termination for
one IEEE1394 connection
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.
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.
BENEFITS
Resistor matching between TPA / TPB lines.
Resistor matching between TPA+ / TPA-
Single chip devise versus 11 discretes
No need for additional overvoltage protection
device
High level of integration
IPAD™
TPA+
TpBias
GND
TPA-
TPB-
TPB+
R4
R1
C
R3
R2
R5
Lines
TPA+
TPA- TPB+ TPB-
Rpd
GND
Zener
Capacitance
Names
R1
R12
R3
R4
R5
C
Cz
Value
55
55
55
55
55
Ω 250pF
5pF
Tolerance
Typ.
Typ.
Typ.
Typ.
20%
20%
Max.
Matching
Matching between 55
Resistor at
±1% max
Figure 1: Pinout Configuration
Table 1: Order Code
Part Number
Marking
ST1394-01SC6
139
TM: IPAD is a trademark of STMicroelectronics.


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