Data Sheet
November 1999
L7581 Ringing Access Switch
Electrical Characteristics
TA = –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
Min
4.5
Typ
5
Max
5.5
Unit
V
VDD
VBAT*
–19
—
–72
V
* VBAT is used only as a reference for internal protection circuitry. If VBAT 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
Test Condition
Measure
Min Typ Max Unit
OFF-state Leakage
Current:
+25 °C
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
+85 °C
–40 °C
ON-resistance
(SW1, SW2):
+25 °C
TLINE = ±10 mA, ±40 mA, TBAT = –2 V
TLINE = ±10 mA, ±40 mA, TBAT = –2 V
TLINE = ±10 mA, ±40 mA, TBAT = –2 V
∆ VON
∆ VON
∆ VON
—
—
—
19.5
—
14.5
—
28
—
Ω
Ω
Ω
+85 °C
–40 °C
ON-resistance Match
Per ON-resistance test
condition of SW1, SW2
Magnitude
RON SW1 – RON SW2
—
0.2 1.0
Ω
ON-state Voltage*
Iswitch = ILIMIT @ 50 Hz/60 Hz
VON
—
—
220
—
V
dc Current Limit:
+85 °C
Vswitch (on) = ±10 V
Vswitch (on) = ±10 V
Iswitch
Iswitch
80
—
—
—
mA
–40 °C
250 mA
Dynamic Current Limit
(t = <0.5 µs)
Break switches in ON state; ringing
access switches off; apply ±1000 V at
10/1000 µs pulse; appropriate second-
ary protection in place
Iswitch
—
2.5
—
A
Isolation:
+25 °C
Vswitch (both poles) = ±320 V,
Logic inputs = Gnd
Vswitch (both poles) = ±330 V,
Logic inputs = Gnd
Vswitch (both poles) = ±310 V,
Logic inputs = Gnd
Iswitch
Iswitch
Iswitch
—
—
—
—
—
—
1
1
1
µA
µA
µA
+85 °C
–40 °C
dV/dt Sensitivity†
—
—
—
200
—
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 ]
