L7581 Ringing Access Switch
Data Sheet
November 1999
Electrical Characteristics
T
A
= –40 °C to +85 °C, unless otherwise specified.
Minimum and maximum values are testing requirements. Typical values are characteristics of the device and are
the result of engineering evaluations. Typical values are for information purposes only and are not part of the test-
ing requirements.
Table 4. Power Supply Specifications
Supply
V
DD
V
BAT*
Min
4.5
–19
Typ
5
—
Max
5.5
–72
Unit
V
V
* V
BAT
is used only as a reference for internal protection circuitry. If V
BAT
rises above –10 V, the device will enter an all OFF state and remain in
this state until the battery voltage drops below –15 V.
Table 5. Break Switches, 1 and 2
Parameter
OFF-state Leakage
Current:
+25 °C
+85 °C
–40 °C
ON-resistance
(SW1, SW2):
+25 °C
+85 °C
–40 °C
ON-resistance Match
ON-state Voltage*
dc Current Limit:
+85 °C
–40 °C
Dynamic Current Limit
(t = <0.5 µs)
Test Condition
Measure
Min Typ Max
Unit
Vswitch (differential) = –320 V to Gnd
Vswitch (differential) = –60 V to +260 V
Vswitch (differential) = –330 V to Gnd
Vswitch (differential) = –60 V to +270 V
Vswitch (differential) = –310 V to Gnd
Vswitch (differential) = –60 V to +250 V
Iswitch
Iswitch
Iswitch
—
—
—
—
—
—
1
1
1
µA
µA
µA
T
LINE
= ±10 mA, ±40 mA, T
BAT
= –2 V
T
LINE
= ±10 mA, ±40 mA, T
BAT
= –2 V
T
LINE
= ±10 mA, ±40 mA, T
BAT
= –2 V
Per ON-resistance test
condition of SW1, SW2
Iswitch = I
LIMIT
@ 50 Hz/60 Hz
Vswitch (on) = ±10 V
Vswitch (on) = ±10 V
Break switches in ON state; ringing
access switches off; apply ±1000 V at
10/1000 µs pulse; appropriate second-
ary protection in place
Vswitch (both poles) = ±320 V,
Logic inputs = Gnd
Vswitch (both poles) = ±330 V,
Logic inputs = Gnd
Vswitch (both poles) = ±310 V,
Logic inputs = Gnd
—
∆
V
ON
∆
V
ON
∆
V
ON
Magnitude
R
ON
SW1 – R
ON
SW2
V
ON
Iswitch
Iswitch
Iswitch
—
—
—
—
—
80
—
—
19.5
—
14.5
0.2
—
—
—
2.5
—
28
—
1.0
220
—
250
—
Ω
Ω
Ω
Ω
V
mA
mA
A
Isolation:
+25 °C
+85 °C
–40 °C
dV/dt Sensitivity
†
Iswitch
Iswitch
Iswitch
—
—
—
—
—
—
—
—
200
1
1
1
—
µA
µA
µA
V/µs
* This parameter is not tested in production. Choice of secondary protector should ensure this rating is not exceeded.
† Applied voltage is 100 Vp-p square wave at 100 Hz.
4
Lucent Technologies Inc.
AGERE [ AGERE SYSTEMS ]
