ISOCOM COMPONENTS LTD
Unit 25B, Park View Road West,
Park View Industrial Estate, Brenda Road
Hartlepool, Cleveland, TS25 1YD
Tel: (01429) 863609 Fax :(01429) 863581
7/12/00
DB91037-AAS/A2
6N138, 6N139
HIGH SPEED OPTICALLY
COUPLED ISOLATOR
PHOTODARLINGTON OUTPUT
ABSOLUTE MAXIMUM RATINGS
(25°C unless otherwise specified)
Storage Temperature -55°C to + 125°C
Operating Temperature -40°C to + 85°C
Lead Soldering Temperature
(1/16 inch (1.6mm) from case for 10 secs) 260°C
INPUT DIODE
Average Forward Current 20mA ( 1 )
Peak Forward Current 40mA
( 50% duty cycle, 1ms pulse width )
Peak Transient Current 1.0A
(equal to or less than 1µs P.W., 300 pps)
Reverse Voltage 5V
Power Dissipation 35mW( 2 )
DETECTOR
Output Current 60mA( 3 )
Emitter-base Reverse Voltage 5V
Supply and Output Voltage
6N138 -0.5 to +7V
6N139 -0.5 to +18V
Power Dissipation 100mW (4 )
APPROVALS
lUL recognised, File No. E91231
DESCRIPTION
These diode-darlington optocouplers use a light
emitting diode and an integrated high gain photon
detector to provide 2500Volts RMS electrical isolation
between input and output. Seperate connection for
the photodiode bias and output darlington collector
improve the speed up to a hundred times that of a
conventional photo-darlington coupler by reducing
the base-collector capacitance.
FEATURES
lHigh speed - DC to 300kBits/s operation
lHigh Common Mode Transient
Immunity 10kV/µs typical
lTTL Compatible - 0.1V VOL typical
lBase access allows Gain Bandwidth
Adjustment
lLow Input Current Requirement - 0.5mA
lHigh Current Transfer Ratio - 2000% typ.
lOpen Collector Output
l2500V RMS Withstand Test Voltage, 1 min
l6N139 has improved noise shield which
gives superior common mode rejection
lOptions :-
10mm lead spread - add G after part no.
Surface mount - add SM after part no.
Tape&reel - add SMT&R after part no.
lAll electrical parameters 100% tested
lCustom electrical selections available
APPLICATIONS
lLine receivers
lDigital logic ground isolation
lTelephone ring detector
lCurrent loop receiver
0.3
0.5
Dimensions in mm
6.9
6.3
1.3
15°
Max
3.3
4.0
3.6
2.54
9.7
9.1
0.5 1.3
* 6N139 NOISE SHIELD
7.62
4
3
2
18
7
6
5
*
OPTION GOPTION SM
10.16
10.2
9.5
0.3
1.2
0.6 1.4
0.9
7.62
SURFACE MOUNT
ISOCOM INC
1024 S. Greenville Ave, Suite 240,
Allen, TX 75002 USA
Tel: (214) 495-0755 Fax: (214) 495-0901
e-mail info@isocom.com
http://www.isocom.com
DB91037-AAS/A2
7/12/00
ELECTRICAL CHARACTERISTICS ( TA= 0°C to 70°C Unless otherwise noted )
PARAMETER SYM DEVICE MIN TYP* MAX UNITS TEST CONDITION
6N139 400 2000 %IF = 0.5mA,VO = 0.4V
VCC = 4.5V
6N139 500 2000 %IF = 1.6mA, VO = 0.4V
Current Transfer Ratio CTR VCC = 4.5V
(note 5, 6) 6N138 300 2000 %IF = 1.6mA, VO = 0.4V
VCC = 4.5V
6N139 0.1 0.4 VIF = 1.6mA, IO= 6.4mA
VCC = 4.5V
6N139 0.1 0.4 VIF = 5mA, IO = 15mA
Logic Low Output Voltage VOL VCC = 4.5V
(note 6)
6N139 0.1 0.4 VIF = 12mA, IO = 24mA
VCC = 4.5V
6N138 0.1 0.4 VIF = 1.6mA, IO= 4.8mA
VCC = 4.5V
6N139 0.1 100 µAIF = 0mA
Logic High Output Current IOH VO = VCC = 18V
(note 6) 6N138 0.001 250 µAIF = 0mA
VO = VCC = 7V
Logic Low Supply Current ICCL 0.2 mA IF = 1.6mA,VO= open
(note 6) VCC = 5V
Logic High Supply Current ICCH 10 µAIF = 0mA,VO= open
(note 6) VCC = 5V
Input Forward Voltage VF1.45 1.7 VIF = 1.6mA, TA= 25°C
Temperature Coefficient ∆VF-1.8 mV/°C IF = 1.6mA
of Forward Voltage ∆TA
Input Reverse Voltage VR5VIR = 10µA,TA= 25°C
`
Input Capacitance CIN 60 pF f = 1MHz, VF = 0
Input-output Isolation Voltage VISO 2500 5000 VRMS R.H.equal to or less than
50%, t = 1min. TA= 25°C
Resistance (Input to Output) RI-O 1012 ΩVI-O = 500V dc
(note 7)
Capacitance (Input to Output) CI-O 0.6 pF f = 1MHz
(note 7)
* All typicals at TA= 25°C
SWITCHING SPECIFICATIONS AT TA = 25°C ( VCC = 5V Unless otherwise noted )
PARAMETER SYM DEVICE MIN TYP MAX UNITS TESTCONDITION
Propagation Delay Time 6N139 5.0 25 µsIF = 0.5mA,RL = 4.7kΩ
to Logic Low at Output tPHL 6N139 0.2 1µsIF = 12mA,RL = 270Ω
( fig 1 )( note6,8 ) 6N138 1.0 10 µsIF = 1.6mA,RL = 2.2kΩ
Propagation Delay Time 6N139 1.0 60 µsIF = 0.5mA,RL = 4.7kΩ
to Logic High at Output tPLH 6N139 1.0 7µsIF = 12mA,RL = 270Ω
( fig 1 )( note6,8 ) 6N138 4.0 35 µsIF = 1.6mA,RL = 2.2kΩ
Common Mode Transient
Immunity at Logic High CMH 1000 10000 V/µsIF = 0mA, VCM = 10VPP
Level Output ( fig 2 )( note9 ) RL = 2.2kΩ
Common Mode Transient
Immunity at Logic Low CML -1000 -10000 V/µsIF= 1.6mA,VCM= 10VPP
Level Output ( fig 2 )( note9 ) RL = 2.2kΩ
NOTES:-
1. Derate linearly above 50oC free air temperature at a rate of 0.4 mA/°C.
2. Derate linearly above 50oC free air temperature at a rate of 0.7 mW/°C.
3. Derate linearly above 25oC free air temperature at a rate of 0.7 mA/°C.
4. Derate linearly above 25oC free air temperature at a rate of 2.0 mW/°C.
5. CURRENT TRANSFER RATIO is defined as the ratio of output 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. Use of 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 VCM to assure that the output will remain in a Logic High
state (i.e. VO > 2.0V). 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, VCM to assure that the output
will remain in Logic Low state (i.e. VO< 0.8V).
FIG.1 SWITCHING TEST CIRCUIT
2
IF Monitor
0
IF
VO1.5V
100Ω
1.5V
5V
tPHL tPLH VOL
RL
VO
CL = 15pF
8
7
6
5
PULSE
GENERATOR
ZO = 50Ω
tr = 5ns
IF
1
4
3
10% Duty Cycle
1/f < 100µs5V
DB91037-AAS/A2
7/12/00
DB91037-AAS/A2
7/12/00
FIG. 2 TEST CIRCUIT FOR TRANSIENT IMMUNITY AND TYPICAL WAVEFORMS
1
3
4
+-
A
PULSE GEN.
VCM
0V
VCM
IF
VFF
5V
5V
VOL
VO
VO
SWITCH AT A: IF = 0mA
SWITCH AT B: IF = 1.6mA
10V
10%
90% 10%
90%
trtf
B
8
7
6
5
2RL
VO
Output current I O (mA)
Output Current vs.
Output Voltage
1.0 1.2 1.4 1.6
Forward current I F (mA)
Forward Current vs. Forward
Voltage
Forward voltage VF (V)
Current Transfer Ratio vs.
Forward Current
Current transfer ratio CTR (%)
Forward current IF (mA)
0.1 1.0 10 100
Supply current I CCL (mA)
VO = 0.4V
VCC = 5V
0 1.0 2.0
Output voltage VO (V)
Supply Current vs.
Forward Current
0.01
0.1
0.02
0.04
0.2
0.4
1
2
4
10
TA = 25°C
TA= 0°C
TA= -40°C
TA = 85°C
400
200
100
1000
2000
4000
10000 6N139 VCC = 18V
6N138 VCC = 7V
VCC = 18V
VCC = 7V
Forward current IF (mA)
0.1 1.0 10 100
0.1
0.2
0.4
1
2
4
10
20
40
100
VCC = 5V
TA = 25°C
IF = 0.5mA / step
0
10
20
30
40
50
60
70
80
90
100
