ATTL7554BP Agere Systems, ATTL7554BP Datasheet - Page 3
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ATTL7554BP
Manufacturer Part Number
ATTL7554BP
Description
L7554 Low-Power SLIC
Manufacturer
Agere Systems
Datasheet
1.ATTL7554BP.pdf
(28 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Data Sheet
March 1997
Lucent Technologies Inc.
Description
(continued)
RTSN
RTSP
LCTH
DCR
ICM
PR
PT
LOOP CLOSURE DETECTOR
RING TRIP DETECTOR
dc RESISTANCE
RING GROUND
DETECTOR
ADJUST
A = –4
Figure 1. Functional Diagram
A = 4
POWER CONDITIONING & REFERENCE
–1 V/24 mA
+
–
+
–
+
–
V
OP AMP
SPARE
TX
STATE CONTROL
BATTERY FEED
C
EXTERNAL
0.1 µF
RECTIFIER
–
+
T
XI
1
–
+
9.6
3
L7554 Low-Power SLIC
DCOUT
VITR
SN
XMT
RCVN
RCVP
B0
B2
NLC
NRDET
RGDET
B1
12-2569 (C)
3