3
Data Sheet
February 2001
L7583A/B/C/D Line Card Access Switch
Pin Information (continued)
Table 1. Pin Descriptions
Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are absolute stress rat-
ings 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
Handling Precautions
DIP SOG Symbol
Description
DIP
SOG
Symbol
Description
11
FGND
Fault ground.
24
28
VBAT
Battery voltage. Used as a refer-
ence for protection circuit.
2
NC
No connection.
23
27, 26
NC
No connection.
3
3, 4
NC
No connection.
22
25, 21
NC
No connection.
45
TTESTin Test (in) access on TIP.
21
24
RTESTin
Test (in) access on RING.
56
TBAT
Connect to TIP on SLIC side.
20
23
RBAT
Connect to RING on SLIC side.
67
TLINE
Connect to TIP on line side.
19
22
RLINE
Connect to RING on line side.
78
TRINGING Connect to return ground for ringing
generator.
18
20
RRINGING Connect to ringing generator.
810
TTESTout Test (out) access on TIP.
17
19
RTESTout Test (out) access on RING.
9
9, 11
NC
No connection.
16
18
LATCH Data input control, active-high,
transparent low.
10
12
VDD
5 V supply.
15
17
INTESTin Logic level switch input control.
11
13
TSD
Temperature shutdown pin. Can be
used as a logic level input or an out-
put. 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 ther-
mal shutdown mode. To disable the
thermal shutdown mechanism, tie this
pin to
5 V (not recommended).
14
16
INRING
Logic level switch input control.
12
14
DGND
Digital ground.
13
15
INTESTout
Logic level switch input control.
Parameter
Min
Max
Unit
Operating Temperature Range
–40
110
°C
Storage Temperature Range
–40
150
°C
Relative Humidity Range
5
95
%
Pin Soldering Temperature (t = 10 s max)
—
260
°C
5 V Power Supply
—
7
V
Battery Supply
—
–85
V
Logic Input Voltage
—
7
V
Input-to-output Isolation
—
330
V
Pole-to-pole Isolation
—
330
V