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L7583A Datasheet(PDF) 9 Page - Agere Systems

Part # L7583A
Description  Line Card Access Switch
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Manufacturer  AGERE [Agere Systems]
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Lucent Technologies Inc.
9
Data Sheet
February 2001
L7583A/B/C/D Line Card Access Switch
Electrical Characteristics (continued)
Table 12. Additional Electrical Characteristics
* Temperature shutdown flag (TSD) will be high during normal operation and low during temperature shutdown state.
Zero Cross Current Turn Off
The ring access switch (SW8) 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 8, once on, will remain
in the ON state (regardless of logic input) until a current zero cross. Therefore, to ensure proper operation of switch
8, 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 8. The ringing test access switch, SW6, also has similar characteristics to
switch 8 and should also only be used to switch signals with zero current crossings. For a detailed explanation of
the operation of switches 6 and 8, please refer to the
An Introduction to L758X Series of Line Card Access
Switches Application Note.
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
Digital Input Characteristics:
Input Low Voltage
1.5
V
Input High Voltage
3.5
V
Input Leakage Current (high)
VDD = 5.5 V, VBAT = –58 V,
Vlogicin = 5 V
llogicin
1
µA
Input Leakage Current (low)
VDD = 5.5 V, VBAT = –58 V,
Vlogicin = 0 V
llogicin
1
µA
Temperature Shutdown Requirements*:
Shutdown Activation Temperature
110
125
150
°C
Shutdown Circuit Hysteresis
10
25
°C


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