AC LINE MONITOR LOGIC-OUT DEVICE
MID400
DESCRIPTION
The MID400 is an optically isolated AC line-to-logic interface
device. It is packaged in an 8-lead plastic DIP. The AC line voltage
is monitored by two back-to-back GaAs LED diodes in series with
an external resistor. A high gain detector circuit senses the LED
current and drives the output gate to a logic low condition.
The MID400 has been designed solely for the use as an AC line
monitor.
It is recommended for use in any AC-to-DC control appli-
cation where excellent optical isolation, solid state reliability, TTL
compatibility, small size, low power, and low frequency operations
are required.
Package Dimensions
PIN 1
ID.
4
3
2
1
0.270 (6.86)
0.250 (6.35)
5
6
7
8
0.390 (9.91)
0.370 (9.40)
SEATING PLANE
0.070 (1.78)
0.045 (1.14)
0.200 (5.08)
0.115 (2.92)
0.020 (0.51) MIN
0.154 (3.90)
0.120 (3.05)
0.022 (0.56)
0.016 (0.41)
FEATURES
• Direct operation from any line voltage with the use of an external
resistor.
• Externally adjustable time delay
• Externally adjustable AC voltage sensing level
• High voltage isolation between input and output
• Compact plastic DIP package
• Logic level compatibility
• UL recognized (File #E90700)
15° MAX
0.016 (0.40)
0.008 (0.20)
0.100 (2.54) TYP
0.300 (7.62)
TYP
1
8
V
CC
APPLICATIONS
• Monitoring of the AC / DC “line-down” condition
• “Closed-loop” interface between electromechanical elements such
as solenoids, relay contacts, small motors, and microprocessors
• Time delay isolation switch
8
1
N/C
2
7
AUX
3
6
V
0
N/C
4
5
GND
Equivalent Circuit
ABSOLUTE MAXIMUM RATINGS
Rating
EMITTER
RMS Current
DC Current
LED Power Dissipation @ T
A
= 25°C (P
D
)
Derate above 70°C
DETECTOR
Low Level Output Current (I
OL
)
High Level Output Voltage(V
OH
)
Supply Voltage (V
CC
)
Detector Power Dissipation @ TA = 25°C (P
D
)
Derate above 70°C
TOTAL DEVICE
Storage Temperature
Operating Temperature
Lead Solder Temperature
Total Device Power Dissipation @ TA = 25°C (P
D
)
Derate above 70°C
Surge Isolation
Steady State Isolation
Value
25
±30
45
2.0
20
7.0
7.0
70
2.0
-55 to +125
-40 to +85
260 for 10 sec
115
4.0
3550
2500
3200
2250
Unit
mA
A
mW
mW/°C
mA
V
V
mW
mW/°C
°C
°C
°C
mW
mW/°C
VDC
V RMS
VDC
V RMS
QT [ QT OPTOELECTRONICS ]
