XE5690SM-1ITR Просмотр технического описания (PDF) - Xecom
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XE5690SM-1ITR Datasheet PDF : 22 Pages
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XE5690SM Pin Configuration
Top View
Ti p 1
Ring 2
/INT 3
/Reset 4
SPKR 5
Gnd 6
15
VCC
14
/DCD
13
/CTS
12
/DSR
11
/RTS
10
/RXD
9
/TXD
8
/DTR
7
/RI
Pin Descriptions
PIN NAME DESCRIPTION
1 Tip
The Ring and Tip signals connect the modem to the telephone line. FCC Part 68
Rules require a 1500 volt isolation barrier between the telephone line and all other
circuits. This isolation must be preserved throughout the system.
The telephone company places a DC “Battery” voltage across Tip and Ring on public
switched telephone lines. The XE5690SM operates regardless of the polarity of this
voltage. The “Battery” voltage drives up to 100 milliampere of DC loop current.
UL60950 requires minimum creepage and clearances distances between the Tip and
Ring and all other circuits. Clearance is the shortest distance between conductive
circuits; creepage is the distance between conductive points along the surface
2 Ring
The Ring and Tip signals connect the modem to the telephone line. FCC Part 68
Rules require a 1500 volt isolation barrier between the telephone line and all other
circuits. This isolation must be preserved throughout the system.
The telephone company places a DC “Battery” voltage across Tip and Ring on public
switched telephone lines. The XE5690SM operates regardless of the polarity of this
voltage. The “Battery” voltage drives up to 100 milliampere of DC loop current.
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XE5690SM
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