Datasheet

©2007 Fairchild Semiconductor Corporation www.fairchildsemi.com
H11AG1M Rev. 1.0.3 6
H11AG1M — Phototransistor Optocoupler
Typical Performance Curves
(Continued)
Figure 7. Collector-Emitter Dark Current vs. Ambient Temperature
T
A
- AMBIENT TEMPERATURE (
o
C)
0102030405060708090100
I
CEO
- DARK CURRENT (nA)
0.1
1
10
100
1000
10000
I
F
= 0mA
V
CE
= 10V
3V ≤ V
CC
≤ 10V
1N4148
C
1
AC
INPUT
VOLTAGE
Figure 8. Telephone Ring Detector/A.C. Line CMOS Input Isolator
R
1
4093 or
74HC14
H11AG1M
47KΩ
4.7MΩ
C
2
0.1
4.7KΩ
DC component of input voltage is ignored due to C1
Input R1 C1 Z
40-90 VRMS
20Hz
75K
1/10W
0.1µF
100V
109K
95-135 VRMS
60Hz
180K
1/10W
12 ηF
200 V
285K
200-280 VRMS
50/60Hz
390K
1/4W
6.80 ηF
400 V
550K
The H11AG1M uses less input power than the neon bulb traditionally used to monitor telephone and line voltages.
Additionally. response time can be tailored to ignore telephone dial tap, switching transients and other undesired
signals by modifying the value of C2. The high impedance to line voltage also can simply board layout spacing
requirements.