Data Sheet
February 2001
L7583A/B/C/D Line Card Access Switch
Pin Information (continued)
Table 1. Pin Descriptions
DIP SOG Symbol
Description
Fault ground.
DIP SOG Symbol
Description
1
1
FGND
24
28
VBAT
Battery voltage. Used as a ref-
erence for protection circuit.
2
3
4
5
2
3, 4
5
NC
NC
No connection.
No connection.
23 27, 26
22 25, 21
NC
NC
No connection.
No connection.
TTESTin Test (in) access on TIP.
21
20
24
23
RTESTin Test (in) access on RING.
6
TBAT
Connect to TIP on SLIC side.
RBAT
Connect to RING on SLIC
side.
6
7
7
8
TLINE
Connect to TIP on line side.
19
22
20
RLINE
Connect to RING on line side.
TRINGING Connect to return ground for ring- 18
ing generator.
RRINGING Connect to ringing generator.
8
9
10
TTESTout Test (out) access on TIP.
17
16
19
18
RTESTout Test (out) access on RING.
9, 11
NC
No connection.
LATCH Data input control, active-high,
transparent low.
10
11
12
13
VDD
TSD
5 V supply.
15
14
17
16
INTESTin Logic level switch input control.
INRING Logic level switch input control.
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).
12
14
DGND Digital ground.
13
15
INTESTout 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
Min
Max
Unit
Operating Temperature Range
Storage Temperature Range
Relative Humidity Range
Pin Soldering Temperature (t = 10 s max)
5 V Power Supply
–40
–40
5
110
150
95
°C
°C
%
°C
V
—
260
7
—
Battery Supply
—
–85
7
V
Logic Input Voltage
—
V
Input-to-output Isolation
Pole-to-pole Isolation
—
330
330
V
—
V
Lucent Technologies Inc.
3
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