le79r79 Zarlink Semiconductor, le79r79 Datasheet - Page 11

• Manufacturer Part Number: le79r79
• Description: Ringing Subscriber Line Interface Circuit
• Manufacturer: Zarlink Semiconductor

Supply Currents
Logic Inputs
(Applies to C3–C1, D2–D1, E1, and B2EN).
Logic Output
Ring-Trip Detector Input
Ring Signal
Ground-Key Detector Thresholds
(DET)
I
On-hook V
I
On-hook V
I
On-hook V
V
V
I
I
V
V
Ring detect accuracy
V
V
Ground-key resistive threshold
Ground-key current threshold
∆V
CC
NEG
BAT
IH
IL
AB
AB
IH
IL
OL
OH
, Input Low current
, Input High current
, Input Low voltage
, Input High voltage
,
, Output Low voltage
, Ringing
, Ringing offset
AB
, Output High voltage
,
,
⁄
∆V
Description
CC
NEG
BAT
RINGIN
Description
Description
Description
Description
Description
supply current
supply current
supply current
(
RINGIN gain
IRTD
)
Open Circuit state
Standby state
OHT state
Active state-normal
Open Circuit state
Standby state
OHT state
Active state-normal
Open Circuit state
Standby state
OHT state
Active state-normal
I
I
BAT1 = −75 V, Ringload = 1570 Ω
V
B to ground
B to ground
OUT
OUT
Test Conditions (See Note 1)
RINGIN
Test Conditions (See Note 1)
Test Conditions (See Note 1)
Test Conditions (See Note 1)
Test Conditions (See Note 1)
=
= 0.8 mA, 15 kΩ to V
= –0.1 mA, 15 kΩ to V


Zarlink Semiconductor Inc.
--------------------------- -
BAT1
= 2.5 V
RRT1
Test Conditions
–
1
11
+
24 µA
CC
CC


•
335
–400
Min
Min
–75
Min
Min
−10
150
Min
Min
2.0
2.4
66
2
–10
0.45
Typ
Typ
Typ
Typ
180
Typ
Typ
3.0
3.2
6.2
6.5
0.1
0.1
0.7
0.7
0.6
2.0
2.7
69
11
0
5
Max
Max
Max
0.40
Max
Max
Max
210
4.5
5.5
8.0
9.0
0.2
0.2
1.1
1.1
1.0
1.5
4.0
5.0
0.8
40
10
10
+10
Unit
Unit
Unit
Unit
Unit
Unit
Vpk
mA
mA
µA
kΩ
V
V
V
%
Note
Note
Note
Note
Note
Note
7