am79r251 Advanced Micro Devices, am79r251 Datasheet - Page 18
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am79r251
Manufacturer Part Number
am79r251
Description
Intelligent Subscriber Line Interface Circuit Islic
Manufacturer
Advanced Micro Devices
Datasheet
1.AM79R251.pdf
(27 pages)
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Relay Driver Specifications
Figure 5.
18
Figure 5A. Ring Relay
Relay Driver Configuration
On Voltage
R2,R3 Off Leakage
Zener Break Over, R1
Zener On Voltage, R1
R2
Item
25 mA/relay sink
1 relay on
3 relays on
40 mA/ relay sink
1 relay on
3 relays on
R2,R3 = BGND
RYE = VBH
Iz = 100 A
Iz = 30 mA
Am79R251
Condition
RYE
Min
6.6
0
BGND
0.225
0.45
Typ
0.4
0.8
7.9
11
Max
100
0.3
0.5
0.7
1.0
R1
Unit
µA
V
V
V
Note
R3
3
3