5–1
FEATURES
• High Current Transfer Ratio, 800%
• Low Input Current, 0.5mA
• High Output Current, 60mA
• Isolation T est V oltage, 2500 V AC
RMS
• TTL Compatible Output, VOL=0.1 V
• High Common Mode Rejection, 500V/
µ
sec.
• Adjustable Bandwidth–Access to Base
• Standard Molded Dip Plastic Package
• Underwriters Lab File #E52744
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
DESCRIPTION
High common mode transient immunity and very
high current ratio together with 2500 VAC insulation
are achieved by coupling an LED with an integrated
high gain photo detector in an eight pin dual-in-line
package. Separate pins for the photodiode and out-
put stage enable TTL compatible saturation volt-
ages with high speed operation. Photodarlington
operation is achieved by tying the V
CC
and V
O
ter-
minals together. Access to the base terminal allows
adjustment to the gain bandwidth.
The 6N138 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 K
Ω
pull-up
resistor.
The 6N139 is best suited for low power logic appli-
cations involving CMOS and low power TTL. A
400% current 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) precau-
tions. Proper gr ounding would prevent damage further
and/or degradation which may be induced by ESD.
Maximum Ratings
Reverse Input Voltage..........................................................................5 V
Supply and Output Voltage, V
CC
(pin 8-5), V
O
(pin 6-5)
6N138...................................................................................–0.5 to 7 V
6N139.................................................................................–0.5 to 18 V
Emitter-Base Reverse Voltage (pin 5-7)............................................0.5 V
Average Input Current.....................................................................20 mA
Peak Input Current (50% Duty Cycle–1 ms pulse width)................40 mA
Peak Transient Input Current (tp
≤
1
µ
sec, 300 pps ...........................1.0 A
Output Current I
O
(pin 6).................................................................60 mA
Derate linearly above 25
°
C, free air temperature at 0.7 mA/
°
C
Input Power Dissipation .................................................................35 mW
Derate linearly above 50%, free air temperature at 0.7 mW/
°
C
Output Power Dissipation.............................................................100 mW
Derate linearly above 25
°
C, free air temperature at 0.2 mA/
°
C
Isolation Test Voltage...........................................................2500 VAC
RMS
Isolation Resistance
V
IO
=500 V, T
A
=25
°
C
.........................................................................≥
10
12
Ω
V
IO
=500 V, T
A
=100
°
C
.......................................................................≥
10
11
Ω
Storage Temperature......................................................–55
°
C to +125
°
C
Operating Temperature..................................................–55
°
C to +100
°
C
Lead Soldering Temperature (t=10 sec.)........................................260
°
C
Dimensions in inches (mm)
1
2
3
4
8
7
6
5
VCC
VB
V0
GND
NC
Anode
Cathode
NC
.
268 (6.81)
.
255 (6.48)
34
65 .390 (9.91)
.379 (9.63)
.045 (1.14)
.030 (.76)
4°
Typ.
.100 (2.54) Typ.
10°
Typ.
3°–9°
.305 typ.
(7.75) typ.
.022 (.56)
.018 (.46) .012 (.30)
.008 (.20)
.135 (3.43
)
.115 (2.92
)
12
87
Pin
One
I.D.
.150 (3.81)
.130 (3.30)
.040 (1.02)
.030 (.76 )
6N138
6N139
LOW INPUT CURRENT, HIGH GAIN
OPTOCOUPLER
5–2
6N139/139
Electro-Optical Characteristics
(T
A
=0
°
C to 70
°
C, T
A
=25
°
C–Typical, unless otherwise specified)
Switching Specifications
(T
A
=25
°
C)
Notes
1.Derate linearly above 50
°
C free-air temperature at a rate of 0.4 mA/
°
C.
2.Derate linearly above 50
°
C free-air temperature at a rate of 0.7 mW/
°
C.
3.Derate linearly above 25
°
C free-air temperature at a rate of 0.7 mA/
°
C.
4.Derate linearly above 25
°
C free-air temperature at a rate of 2.0 mW/
°
C.
5.DC current transfer ratio is defined as the ratio of outpput collector current, IO, to the forward LED input current, IF times 100%.
6.Pin 7 open.
7.Device considered a two-terminal device: pins 1, 2, 3 and 4 shorted together and pins 5, 6, 7 and 8 shorted together.
8.Using a resistor between pin 5 and 7 will decrease gain and delay time.
9.Common mode transient immunity in logic high level is the maximum tolerable (positive) dVcm/dt on the leading edge of the common 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) dVcm/dt on the trailing edge of the common mode pulse signal, V
CM
, to assure that the output will remain in a
logic low state (i.e. V
O
<
0.8 V).
10.In applications where dv/dt may exceed 50,000 V/
µ
s (such as state discharge) a series resistor, R
CC
should be included to protect I
C
from
destructively high surge currents. The recommended value is
Parameter Symbol Device Min
.Typ. Max. Units Test Conditions
Note
Current Transfer Ratio CTR 6N138 300 1600 % I
F
=1.6 mA, V
O
=0.4 V, V
CC
=4.5 V 5.6
6N139 400
500 1600
2000 %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 5.6
Logic Low 6N138 0.1 0.4 V I
F
=1.6 mA, I
O
=4.8 mA, V
CC
=4.5 V 6
Output Voltage V
OL
6N139
6N139
6N139
0.1
0.15
0.25
0.4
0.4
0.4
VI
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
6
Logic High 6N138 0.1 250
µ
AI
F
=0 mA, V
O
=V
CC
=7 V 6
Output Current I
OH
6N139 0.05 100
µ
AI
F
=0 mA, V
O
=V
CC
=18 V 6
Logic Low Supply Current I
CCL
0.2 1.5 mA I
F
=1.6 mA, V
O
=OPEN, V
CC
=18 V 6
Logic High Supply Current I
CCH
0.001 10
µ
AI
F
=0 mA, V
O
=OPEN, V
CC
=18 V 6
Input Forward Voltage V
F
1.4 1.7 V I
F
=1.6 mA, T
A
=25
°
C
Input Reverse Breakdown
Voltage BV
R
5VI
R
=10
µ
A
Temperature Coefficient of
Forward Voltage -1.8 mV/
°
CI
F
=1.6 mA
Input Capacitance C
IN
25 pF f=1 MHz, V
F
=0
Input-Output Insulation
Leakage Current I-0 1.0
µ
A 45% Relative Humidity, T
A
=25
°
C
t=5
S
, V
1-0
=3000 VDC 7
Resistance (Input-Output) R
I-O
10
12
Ω
V
IO
=500 VDC 7
Capacitance (Input-Output) C
I-O
0.6 pF f=1 MHz 7
Parameter Symbol Device Min
.Typ. Max. Units Test Conditions
Note
Propagation Delay Time 6N138 2 10
µ
SI
F
=1.6 mA, R
L
=2.2 K
Ω
To Logic Low at Output t
PHL
6N139 6
0.6 25
1µSI
F
=0.5 mA, RL=4.7 KΩ
IF=12 mA, RL=270 Ω6,8
Propagation Delay Time 6N138 2 35 µSI
F
=1.6 mA, RL=2.2 KΩ
To Logic High at Output tPLH 6N139 4
1.5 60
7µSIF=0.5 mA, RL=4.7 KΩ
IF=12 mA, RL=270 Ω6,8
Common Mode Transient Immunity at Logic
High Level Output CMH500 V/µSI
F
=0 mA, RL=2.2 KΩ
RCC=0/VCM/=10 Vp-p 9,10
Common Mode Transient Immunity at Logic
Low Level Ouput CML–500 V/µSI
F
=1.6 mA, RL=2.2 KΩ
RCC=0/VCM/=10 Vp-p 9,10
R
CC
IV
0.15IFmA()
--------------------------------- kΩ≅
