HT0740
High Voltage, Isolated MOSFET Driver
Features
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±400V input to output isolation
Low input logic current, 500µA max
No external voltage supply required
Floating isolated output drivers
5.0V logic compatible
General Description
The Supertex HT0740 is a single channel, high voltage, low
input current, isolated driver utilizing Supertex’s proprietary
HVCMOS
®
technology. It is designed to drive discrete
MOSFETs, configured as high side switches, up to 400V.
The HT0740 generates an independent DC isolated voltage
across the pair of outputs when the logic input is at a logic
high. The HT0740 does not require any external power
supplies. The internal supply voltage is supplied from the
logic input when it is in the high state.
Applications
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Telecommunications
Modems
Solid state relays
High side switches
High end audio switches
Avionics
ATE
Block Diagram
Isolation
Barrier
VIN
1
Logic &
Internal
Clock
R
4
+
VOUT
–
3
Driver
10R
R
GND
7
V
ISO
HT0740
Ordering Information
Device
HT0740
Package Options
8-Lead SOIC (Narrow Body)
HT0740LG
HT0740LG-G
-G indicates package is RoHS compliant (‘Green’)
Absolute Maximum Ratings
Parameter
Input to output isolation voltage, V
ISO
Logic input voltage, V
IN
Operating temperature
Storage temperature
Soldering temperature
1
Value
±400V
-0.5 to +7.0V
-40°C to +85°C
-55°C to +150°C
300°C
Pin Configuration
VIN
1
NC
2
8
NC
GND
HT0740
7
–VOUT
3
+VOUT
4
6
NC
5
NC
HT0740
(Top View)
Absolute Maximum Ratings are those values beyond which damage to the device may
occur. Functional operation under these conditions is not implied. Continuous operation
of the device at the absolute rating level may affect device reliability. All voltages are
referenced to device ground.
Note 1.
Distance of 1.6mm from case for 10 seconds.
DC Electrical Characteristics
(T = -40°C
J
to +85°C unless otherwise specified)
Symbol
Parameter
Min
Typ
Max
Units
Conditions
I
H
I
L
V
OUT
V
IN
V
ISO
Logic high input current
Logic low input current (quiescent)
Output voltage across output terminals
Input voltage for zero output
Input to output isolation voltage
-
-
4.5
8.5
-
±400
-
-
-
-
-
-
500
10
-
-
0.8
-
µA
µA
V
V
V
V
V
IN
= 5.0V
V
IN
= 0.5V
V
IN
= 3.15V, no load
V
IN
= 4.5V, no load
No load
---
AC Electrical Characteristics
Symbol
t
d(ON)
t
r
t
d(OFF)
t
f
Parameter
Turn-on delay time
Rise time
Turn-off delay time
Fall time
Min
-
-
-
-
Typ
-
-
-
-
Max
50
650
150
3.0
Units
µs
µs
µs
ms
See timing diagram and test
circuit
C
L
= 600pF, T
A
= 25°C
Conditions
Recommended Operating Conditions
Symbol
V
IH
V
IL
T
A
Parameter
Logic input high voltage
Logic input low voltage
Operating temperature
Min
3.15
0
-40
Typ
-
-
-
Max
5.5
0.5
+85
Units
V
V
O
Conditions
---
---
---
C
2
HT0740
Timing Diagram
4.5V
50%
V
IN
0V
50%
90%
10%
90%
10%
V
OUT
t
d(ON)
t
r
t
d(OFF)
t
f
Test Circuit
4.5V
0V
VOUT
C
L
=
600pF
1
VIN
+
4
V
OUT
7
GND
-
3
HT0740
3
HT0740
8-Lead SOIC (Narrow Body) LG Package Outline
4.90 ± 0.10
8
6.00 ± 0.20
3.90 ± 0.10
Note 2
Notes:
1. All dimensions in millimeters. Angles in degrees.
2. If the corner is not chamfered, then a Pin 1 identifier
must be located within the area indicated.
1
Top
View
0.17 - 0.25
1.75 MAX
1.25 MIN
5° - 15°
(4 PLCS)
45°
0.25 - 0.50
Note 2
0° - 8°
0.10 - 0.25
1.27BSC
0.40 - 1.27
0.31 - 0.51
Side
View
End
View
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline
information go to
http://www.supertex.com/packaging.html.)
Doc.# DSFP-HT0740
A040207
4
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