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ATTL7582AAE Datasheet(PDF) 7 Page - Agere Systems

Part # ATTL7582AAE
Description  Tip Ring Access Switch
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Manufacturer  AGERE [Agere Systems]
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ATTL7582AAE Datasheet(HTML) 7 Page - Agere Systems

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Lucent Technologies Inc.
7
Data Sheet
November 1999
L7582 Tip Ring Access Switch
Electrical Characteristics (continued)
Table 9. Additional Electrical Characteristics
* Temperature shutdown flag (TSD) will be high during normal operation and low during temperature shutdown state.
Parameter
Test Condition
Measure
Min
Typ
Max Unit
Digital Input Characteristics:
Input Low Voltage
1.5
V
Input High Voltage
3.5
V
Input Leakage Current (high)
VDD = 5.5 V, VBAT = –75 V,
Vlogicin = 5 V
llogicin
1
µA
Input Leakage Current (low)
VDD = 5.5 V, VBAT = –75 V,
Vlogicin = 0 V
llogicin
1
µA
Power Requirements:
Power Dissipation
VDD = 5 V, VBAT = –48 V,
idle/talk state or all OFF state,
ringing state or access state
IDD, IBAT
IDD
3
6
5
10
mW
mW
VDD Current
VDD = 5 V,
idle/talk state or all OFF state,
ringing state or access state
IDD
IDD
560
0.750
900
1.9
µA
mA
VBAT Current
VBAT = –48 V,
idle/talk state or all OFF state,
ringing state or access state
IBAT
IBAT
4
4
10
10
µA
µA
Temperature Shutdown Requirements*:
Shutdown Activation Temperature
110
125
150
°C
Shutdown Circuit Hysteresis
10
25
°C
Zero Cross Current Turn Off
The ring access switch (SW4) is designed to turn off on
the next zero current crossing after application of the
appropriate logic input control. This switch requires a
current zero cross to turn off. Switch 4, once on, will
remain in the ON state (regardless of logic input) until a
current zero cross. Therefore, to ensure proper opera-
tion of switch 4, this switch should be connected, via
proper impedance, to the ringing generator or some
other ac source. Do not attempt to switch pure dc with
switch 4.
For a detailed explanation of the operation of switch 4,
please refer to the
An Introduction to L758X Series of
Line Card Access Switches Application Note.
Switching Behavior
When switching from the power ringing state to the
idle/talk state via simple logic level input control, the
L7582 is able to provide control with respect to the tim-
ing when the ringing access contacts are released rela-
tive to the state of the line break contacts.
Make-before-break operation occurs when the line
break switch contacts are closed (or made) before the
ringing access switch contact is opened (or broken).
Break-before-make operation occurs when the ringing
access contact is opened (broken) before the line
break switch contacts are closed (made).
Using the logic level input pins INring and INaccess,
either make-before-break or break-before-make opera-
tion of the L7582 is easily achieved. The logic
sequences for either mode of operation are given in
Table 10 and Table 11. See the Truth Table (Table 13)
for an explanation of the logic states.


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