8
1
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.
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)
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
AC LINE MONITOR LOGIC-OUT DEVICE
MID400
1
2
3
4
5
6
7
8
V
CC
AUX
V
0
GND
Equivalent Circuit
N/C
N/C
Rating
Value
Unit
EMITTER
RMS Current
25
mA
DC Current
30
A
LED Power Dissipation @ T
A
= 25C (P
D
)
45
mW
Derate above 70C
2.0
mW/C
DETECTOR
20
mA
Low Level Output Current (I
OL
)
High Level Output Voltage(V
OH
)
7.0
V
Supply Voltage (V
CC
)
7.0
V
Detector Power Dissipation @ TA = 25C (P
D
)
70
mW
Derate above 70C
2.0
mW/C
TOTAL DEVICE
-55 to +125
C
Storage Temperature
Operating Temperature
-40 to +85
C
Lead Solder Temperature
260 for 10 sec
C
Total Device Power Dissipation @ TA = 25C (P
D
)
115
mW
Derate above 70C
4.0
mW/C
Surge Isolation
3550 VDC
2500
V RMS
Steady State Isolation
3200
VDC
2250
V RMS
ABSOLUTE MAXIMUM RATINGS
Package Dimensions
0.200 (5.08)
0.115 (2.92)
0.100 (2.54) TYP
0.022 (0.56)
0.016 (0.41)
0.020 (0.51) MIN
0.390 (9.91)
0.370 (9.40)
0.270 (6.86)
0.250 (6.35)
PIN 1
ID.
3
0.070 (1.78)
0.045 (1.14)
2
4
1
5
6
7
8
0.300 (7.62)
TYP
0.154 (3.90)
0.120 (3.05)
0.016 (0.40)
0.008 (0.20)
15 MAX
SEAT
ING PL
ANE
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