
Document Number: 83684
www.vishay.com
Revision 17-August-01
2–303
FEATURES
Data Rate 5.0 Mb/s (2.5 Mb/s over Temperature)
Buffer
Isolation Test Voltage, 3000 VRMS for 1.0 s
TTL, LSTTL and CMOS Compatible
Internal Shield for Very High Common Mode
Transient Immunity
Wide Supply Voltage Range (4.5 to 15 V)
Low Input Current (1.6 mA to 5.0 mA)
Specied from 0
°C to 85°C
VDE 0884 Available with Option 1
APPLICATIONS
Industrial Control
Replace Pulse Transformers
Routine Logic Interfacing
Motion/Power Control
High Speed Line Receiver
Microprocessor System Interfaces
Computer Peripheral Interfaces
DESCRIPTION
The single channel 5.0 Mb/s SFH6720T and
SFH6721T high speed optocoupler consists of a
GaAlAs infrared emitting diode, optically coupled with
an integrated photodetector. The detector incorpo-
rates a Schmitt-Trigger stage for improved noise
immunity. A Faraday shield provides a common mode
transient immunity of 1000 V/
s at VCM=50 V for
SFH6720T and 2500 V/
s at VCM = 400 V for
SFH6721T.
The SFH6720T and SFH6721T uses an industry stan-
dard SOIC-8A package.
Truth Table SFH6720T and SFH6721T
(Positive Logic)
IR Diode
Output
on
H
off
L
V
DE
Maximum Ratings
Parameter
Sym.
Min.
Max.
Units
Emitter
Reverse Voltage
VR
—
3.0
V
DC Forward Current
IF
—
10
mA
Surge Forward Current
(tp
≤1.0 s, 300 pulses/s)
IFSM
—
1.0
A
Total Power Dissipation
Ptot
—
20
mW
Detector
Supply Voltage
VCC
–0.5
15
V
Output Voltage
VO
–0.5
15
V
Average Output Current
IO
—
25
mA
Total Power Dissipation
Ptot
—
100
mW
Package
Storage Temperature Range
Tstg
–55
125
°C
Ambient Temperature Range
TA
–40
100
°C
Lead Soldering Temperature
(t=10 s)
TS
—
260
°C
Isolation Test Voltage (t=1.0 s)
VISO
3000
—
VRMS
Pollution Degree
——
2
—
Creepage Distance and Clearance
—
4.0
—
mm
Comparative Tracking Index per
DIN IEC112/VDE 0303, part 1
—
175
400
—
Isolation
Resistance
VIO=500 V, TA=25°C
RISO
1012
—
VIO=500 V, TA=100°C10
11
—
VCC
VO
NC
GND
Anode
Cathode
40
°
.240
(6.10)
.154
±.005
(3.91
±.13)
.050 (1.27)
typ.
.016 (.41)
.192
±.005
(4.88
±.13)
.004 (.10)
.008 (.20)
Lead
Coplanarity
±.0015 (.04)
max.
.015
±.002
(.38
±.05)
.008 (.20)
7
°
.058
±.005
(1.49
±.13)
.125
±.005
(3.18
±.13)
Pin One ID
.120
±.005
(3.05
±.13)
CL
.021 (.53)
5
° max.
R.010
(.25) max.
.020
±.004
(.51
±.10)
2 plcs.
1
2
3
4
8
7
6
5
Dimensions in Inches (mm)
SFH6720T/6721T
High-Speed 5.0 Mb/s Optocoupler
Small Outline Surface Mount