EW
SFH6318T
SFH6319T
LOW CURRENT, HIGH GAIN
OPTOCOUPLER
Package Dimensions in Inches (mm)
.120±.002
(3.05±.05)
NC
1
8
V
CC
7
V
B
6
V
0
5
GND
N
FEATURES
• Industry Standard SOIC-8 Surface Mountable
Package
• High Current Transfer Ratio, 800%
• Low Input Current, 0.5mA
• High Output Current, 60mA
• Isolation Test Voltage, 2500 VAC
RMS
• TTL Compatible Output, V
OL
=0.1 V
• Adjustable Bandwidth-Access to Base
• Underwriters Lab File #E52744
• Available in Tape and Reel (suffix T)
APPLICATIONS
• Logic Ground Isolation-TTL/TTL, TTL/CMOS,
CMOS/CMOS, CMOS/TTL
• EIA RS 232C Line Receiver
• Low Input Current Line Receiver-Long Lines,
Party Lines
• Telephone Ring Detector
• 117 VAC Line Voltage Status Indication-Low
Input Power Dissipation
• Low Power Systems-Ground Isolation
.240
(6.10)
C
.154±.002
L
(.391±.05)
.016
(.41)
.192±.005
(4.88±.13)
Anode
2
Cathode
3
NC
4
40°
Pin 1
.015±.002
(.38±.05)
7°
.058±.005
(1.49±.13)
.125±.005
(3.18±.13)
Lead
Coplanarity
±.0015
(.04
max.
.004 (.10)
.008 (.20)
.008 (.20)
5° max.
R.010
(.25)
max.
.021
(.53)
.050
(1.27)
typ.
.020±.004
(.15±.10)
2 plcs.
TOLERANCE:
±
.005 (unless otherwise noted)
DESCRIPTION
Very high current ratio together with 2500 VAC isolation
are achieved by coupling an LED with an integrated high
gain photodetector in a SOIC-8 package. Separate pins
for the photodiode and output stage enable TTL compat-
ible saturation voltages with high speed operation. Pho-
todarlington operation is achieved by tying the VCC and
VO terminals together. Access to the base terminal
allows adjustment to the gain bandwidth.
The SFH6318T is ideal for TTL applications since the
300% minimum current transfer ratio with an LED current
of 1.6 mA enables operation with one unit load-in and
one unit load-out with a 2.2 KΩ pull-up resistor.
The SFH6319T is best suited for low power logic applica-
tions involving CMOS and low power TTL. A 400% cur-
rent transfer ratio with only 0.5 mA of LED current is
guaranteed from 0°C to 70°C.
Caution:
Due to the small geometries of this device, it should be
handled with Electrostatic Discharge (ESD) precautions.
Proper grounding would prevent damage further and/or
degradation which may be induced by ESD.
Maximum Ratings (25°)
Emitter
Reverse Input Voltage.............................................................. 3 V
Supply and Output Voltage, V
CC
(pin 8-5), V
O
(pin 6-5)
SFH6318T ..................................................................–0.5 to 7 V
SFH6319T ................................................................–0.5 to 18 V
Input Power Dissipation ..................................................... 35 mW
Derate Linearly above 50°C
Free Air Temperature................................................ 0.7 mW/°C
Average Input Current......................................................... 20 mA
Peak Input Current .............................................................. 40 mA
(50% Duty Cycle-1 ms pulse width)
Peak Transient Input Current
(tp≤1
µsec,
300 pps) ......................................................... 1.0 A
Detector (Si Photodiode + Photodarlington)
Output Current I
O
(pin 6)..................................................... 60 mA
Emitter-Base Reverse Voltage (pin 5-7)................................ 0.5 V
Output Power Dissipation................................................. 150 mW
Derate Linearly from 25°C ........................................... 2 mW/°C
Package
Storage Temperature ......................................... –55°C to +125°C
Operating Temperature........................................ –40°C to +85°C
Lead Soldering Temperature (t=10 sec.).............................260°C
Junction Temperature ..........................................................100°C
Ambient Temperature Range............................. –55°C to +100°C
IsolationTest Voltage between
Emitter and Detector............................................ 2500 VAC
RMS
(refer to climate DIN 40046, part 2, Nov. 74)
Pollution Degree (DIN VDE 0110) ................................................2
Creepage Distance .............................................................≥4 mm
Clearance............................................................................≥4 mm
Comparative Tracking Index
per DIN IEC 112/VDE 0303, part 1 .......................................175
Isolation Resistance
V
IO
=500 V, T
A
=25°C R
ISOL
.............................................≥10
12
Ω
V
IO
=500 V, T
A
=100°C R
ISOL
...........................................≥10
11
Ω
Semiconductor Goup
4–48
10.95
This document was created with FrameMaker 4.0.3
Electro-Optical Characteristics
(T
A
=0°C to 70°C, T
A
=25°C-Typical, unless otherwise specified)
Parameter
Current Transfer Ratio
Symbol
CTR
Device
SFH6318T
SFH6319T
Min
300
400
500
Typ
1600
1600
2000
0.1
0.1
0.15
0.25
0.1
0.05
0.2
0.01
1.4
–1.8
Max
2600
2600
3500
0.4
0.4
0.4
0.4
250
100
1.5
10
1.7
Units
%
%
Test Conditions
I
F
=1.6 mA, V
O
=0.4 V, V
CC
=4.5 V
I
F
=0.5 mA, V
O
=0.4 V, V
CC
=4.5 V
I
F
=1.6 mA, V
O
=0.4 V, V
CC
=4.5 V
I
F
=1.6 mA, I
O
=4.8 mA, V
CC
=4.5 V
I
F
=1.6 mA, I
O
=8 mA, V
CC
=4.5 V
I
F
=5 mA, I
O
=15 mA, V
CC
=4.5 V
I
F
=12 mA, I
O
=24 mA, V
CC
=4.5 V
I
F
=0 mA, V
O
=V
CC
=7 V
I
F
=0 mA, V
O
=V
CC
=18 V
I
F
=1.6 mA, V
O
=OPEN, V
CC
=18 V
I
F
=0 mA, V
O
=OPEN, V
CC
=18 V
I
F
=1.6 mA, T
A
=25°C
I
F
=1.6 mA
f=1 MHz, V
F
=0
V
IO
=500 VDC, T
A
=25°C
V
IO
=500 VDC, T
A
=100°C
f=1 MHz
3
Note
1,2
1,2
Logic Low
Output Voltage
V
OL
SFH6318T
SFH6319T
V
V
2
2
Logic High
Output Current
Logic Low Supply Current
Logic High Supply Current
Input Forward Voltage
Temperature Coefficient,
Forward Voltage
Input Capacitance
Resistance (Input-Output)
I
OH
SFH6318T
SFH6319T
µA
µA
mA
µA
V
mV/
°C
pF
Ω
Ω
pF
2
2
2
2
I
CCL
I
CCH
V
F
∆V
F
/∆T
A
C
IN
R
I-O
C
I-O
25
10
12
10
11
0.6
Capacitance (Input-Output)
3
Switching Specifications
(T
A
=25°C)
Parameter
Propagation Delay Time
To Logic Low at Output
Symbol
t
PHL
Device
SFH6318T
SFH6319T
Min
Typ
2
6
0.6
2
4
1.5
1K
Max
10
25
1
35
60
7
Units
µs
µs
µs
µs
V/µs
Test Conditions
I
F
=1.6 mA, R
L
=2.2 KΩ
I
F
=0.5 mA, R
L
=4.7 KΩ
I
F
=12 mA, R
L
=270
Ω
I
F
=1.6 mA, R
L
=2.2 KΩ
I
F
=0.5 mA, R
L
=4.7 KΩ
I
F
=12 mA, R
L
=270
Ω
I
F
=0 mA, R
L
=2.2 KΩ
V
CM
=10 V
p-p
I
F
=1.6 mA, R
L
=2.2 KΩ
V
CM
=10 V
p-p
2,4
2,4
Note
Propagation Delay Time
To Logic High at Output
t
PLH
SFH6318T
SFH6319T
Common Mode Transient Im-
munity at Logic High Level
Output
Common Mode Transient Im-
munity at Logic Low Level Out-
put
| CM
H
|
5,6
| CM
L
|
1K
V/µs
5,6
Notes
1. DC current transfer ratio is defined as the ratio of outpput collector current, I
O
, to the forward LED input current, I
F
times 100%.
2. Pin 7 open.
3. Device considered a two-terminal device: pins 1, 2, 3 and 4 shorted together and pins 5, 6, 7 and 8 shorted together.
4. Using a resistor between pin 5 and 7 will decrease gain and delay time.
5. Common mode transient immunity in logic high level is the maximum tolerable (positive) dV
cm
/dt on the leading edge of the commo-
mode pulse, V
CM
, to assure that the output will remain in a logic high state (i.e. V
O
>2.0 V) common mode transient immunity in logic
low level is the maximum tolerable (negative) dV
cm
/dt on the trailing edge of the common mode puse signal, V
CM
, to assure that the
output will remain in a logic low state (i.e. V
O
<0.8 V).
6. In applications where dv/dt may exceed 50,000 V/µs (such as state discharge) a series resistor, R
CC
should be included to protect IC
from destructively high surge currents. The recommended value is
R
CC
≅
kΩ.
Refer to Figure 2.
IV
0.15 I
F
(mA)
SFH6318T/6319T
Semiconductor Group
4–49
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