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參數(shù)資料
| 型號： | STLC5445 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | QUAD LINE FEED CONTROLLER |
| 中文描述： | 四線飼料控制器 |
| 文件頁數(shù)： | 1/23頁 |
| 文件大?。?/td> | 214K |
| 代理商： | STLC5445 |
1/23
STLC5445
October 2002
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BATTERY VOLTAGE UP TO 120V
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SUPPLIES POWER FOR UP TO FOUR
DIGITAL TELEPHONE LINES
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PROGRAMMABLE CURRENT LIMITING
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LONGITUDINAL CURRENT CANCELLATION
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ETSI ETR80 COMPLIANT
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OUTPUT CURRENT UP TO 140 mA
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STATUS CONDITION DETECTION FOR
EACH LINE
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AUTOMATIC THERMAL PROTECTION
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AUTO POWER ON SEQUENCE
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OUTPUT STAGE OPTIMIZED FOR MINIMAL
OUTPUT OVERVOLTAGE PROTECTION
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TWO EXTERNAL RELAY DRIVERS PER LINE
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PARALLEL OR MPI CONTROL INTERFACE
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HI-QUAD PACKAGE 64 PIN
DESCRIPTION
The QUAD LINE FEED CONTROLLER provides a
power source for up to four U line interfaces. The
power source to the device is a local battery or a cen-
tralized regulated power supply. Each powered line is
individually controlled and monitored by the device
interface.
A MPI or a simple parallel interface can be selected
by a pin strap.
Each line can be individually powered and monitored:
therefore overload and faults can easily be detected
and localized even in a large system. The status con-
ditions detected by the device are: Current Overload,
Thermal Overload, Open Loop. If activated (by
means of a dedicated pin strap), a self generated
power on sequence avoids the thermal over stress
when a simultaneous power on has been requested
for more than one channel. The current limiting value
can globally be programmed for the four channels by
means of an external resistor. The device has two in-
tegrated relay drivers per line to drive the test relays
of the ISDN system.
HiQUAD-64
ORDERING NUMBER: STLC5445
QUAD LINE FEED CONTROLLER
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