QT MID400 Datasheet
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 application 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
Rating Value Unit
EMITTER
RMS Current 25 mA
DC Current ±30 A
LED Power Dissipation @ TA= 25°C (PD)
45 mW
Derate above 70°C 2.0 mW/°C
DETECTOR
20 mA
Low Level Output Current (I
OL
)
High Level Output Voltage(VOH) 7.0 V
Supply Voltage (VCC) 7.0 V
Detector Power Dissipation @ TA = 25°C (PD)70mW
Derate above 70°C 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 = 25°C (PD)115 mW
Derate above 70°C 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)
241
56 78
0.300 (7.62)
TYP
0.154 (3.90)
0.120 (3.05)
0.016 (0.40)
0.008 (0.20)
15° MAX
SEATING PLANE
1
N/C
2
3
8
N/C
4 5
1
Equivalent Circuit
V
8
CC
AUX
7
V
6
0
GND
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