Data Sheet
February 2001
L7583A/B/C/D Line Card Access Switch
Pin Information
(continued)
Table 1. Pin Descriptions
DIP SOG Symbol
Description
1
1
F
GND
Fault ground.
2
3
4
5
6
7
8
9
10
11
2
3, 4
5
6
7
8
NC
NC
T
TESTin
T
BAT
T
LINE
T
RINGING
No connection.
No connection.
Test (in) access on TIP.
Connect to TIP on SLIC side.
Connect to TIP on line side.
Connect to return ground for ring-
ing generator.
Test (out) access on TIP.
No connection.
DIP
24
23
22
21
20
19
18
17
16
SOG
28
27, 26
25, 21
24
23
22
20
19
18
17
16
Symbol
Description
V
BAT
Battery voltage. Used as a ref-
erence for protection circuit.
NC
No connection.
NC
No connection.
R
TESTin
Test (in) access on RING.
R
BAT
Connect to RING on SLIC
side.
R
LINE
Connect to RING on line side.
R
RINGING
Connect to ringing generator.
R
TESTout
Test (out) access on RING.
LATCH Data input control, active-high,
transparent low.
IN
TESTin
Logic level switch input control.
IN
RING
Logic level switch input control.
10
T
TESTout
9, 11
NC
12
13
V
DD
T
SD
12
14
D
GND
5 V supply.
15
14
Temperature shutdown pin. Can
be used as a logic level input or an
output. See Tables 16 and 17,
Truth Tables, and the Switching
Behavior section of this data sheet
for input pin description. As an
output flag, will read 5 V when the
device is in its operational mode
and 0 V in the thermal shutdown
mode. To disable the thermal shut-
down mechanism, tie this pin to
5 V (not recommended).
Digital ground.
13
15
IN
TESTout
Logic level switch input control.
Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are abso-
lute stress ratings only. Functional operation of the device is not implied at these or any other conditions in excess
of those given in the operational sections of the data sheet. Exposure to absolute maximum ratings for extended
periods can adversely affect device reliability.
Table 2. Absolute Maximum Ratings
Parameter
Operating Temperature Range
Storage Temperature Range
Relative Humidity Range
Pin Soldering Temperature (t = 10 s max)
5 V Power Supply
Battery Supply
Logic Input Voltage
Input-to-output Isolation
Pole-to-pole Isolation
Lucent Technologies Inc.
Min
–40
–40
5
—
—
—
—
—
—
Max
110
150
95
260
7
–85
7
330
330
Unit
°C
°C
%
°C
V
V
V
V
V
3
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