6N138

Maximum Reverse Diode Voltage : 5 V
Minimum Operating Temperature : - 40 C
Maximum Baud Rate : 0.1 MBps
Maximum Forward Diode Voltage : 1.7 V
Maximum Input Diode Current : 20 mA
Maximum Power Dissipation : 100 mW
Packaging : Bulk
Maximum Operating Temperature : + 85 C
Package / Case : PDIP-8
Current Transfer Ratio : 1300 %


Features:

Low current - 0.5 mA
Superior CTR-2000%
Superior CMR-10 kV/s
CTR guaranteed 0-70°C
U.L. recognized (File # E90700)
VDE recognized (File # 120915) Ordering option V, e.g., 6N138V
Dual Channel - HCPL-2730
HCPL-2731




Application

Digital logic ground isolation
Telephone ring detector
EIA-RS-232C line receiver
High common mode noise line receiver
P bus isolation
Current loop receiver




Specifications

Parameter		Symbol	Value	Units
Storage Temperature		TSTG	-55 to +125	°C
Operating Temperature		TOPR	-40 to +85	°C
Lead Solder Temperature (Wave solder only. See recommended reflow profile graph for SMD mounting)		TSOL	260 for 10 sec	°C
EMITTER
DC/Average Forward Input Current Each Channel		IF (avg)	20	mA
Peak Forward Input Current (50% duty cycle, 1 ms P.W.) Each Channel		IF (pk)	40	mA
Peak Transient Input Current - (1 s P.W., 300 pps)		IF (trans)	1.0	A
Reverse Input Voltage Each Channel		VR	5	V
Input Power Dissipation Each Channel		PD	35	mW
DETECTOR
Average Output Current Each Channel		IO (avg)	60	mA
Emitter-Base Reverse Voltage (6N138 and 6N139)		VER	0.5	V
Supply Voltage, Output Voltage	(6N138, HCPL-2730)	VCC , VO	-0.5 to 7	V
	(6N139, HCPL-2731)		-0.5 to 18
Output Power Dissipation Each Channel		PO	100	mW

Description

The 6N138/9 and HCPL-2730/HCPL-2731 optocouplers consist of an AlGaAs LED optically coupled to a high gain split darling-ton photodetector.

The split darlington configuration of 6N138 separating the input photo-diode and the first stage gain from the output transistor permits lower output saturation voltage and higher speed operation than possible with conventional darlington phototransistor optocou-pler. In the dual channel devices, HCPL-2730/HCPL2731, an integrated emitter - base resistor provides superior stability over temperature.

The combination of a very low input current of 0.5 mA and a high current transfer ratio of 2000% makes this family particu- larly useful for input interface to MOS, CMOS, LSTTL and EIA RS232C, while output compatibility is ensured to CMOS as well as high fan-out TTL requirements. An internal noise shield pro- vides exceptional common mode rejection of 10 kV/s.

The 6N138 uses a Light Emitting Diode and an integrated high gain photodetector to provide extremely high current transfer ratio between input and output. Separate pins for the photodiode and output stage result in TTL compatible saturation voltages and high speed operation. Where desired VCC and VO terminals may be tied together to achieve convention photodarlington operation.A base access terminal allows a gain bandwidth adjustment to be made.

The 6N138 is designed for use mainly in TTL applications. Current transfer ratio (CTR) is 300% minimum over 0 to 70 degrees C for an LED current of 1.6 mA (1 TTL Unit load). A 300% minimum CTR enables operation with 1 TTL Load using a 2.2 k ohm pull-up resistor.

Selection for lower input current down to 250 mA is available upon request.

Parameters:

Technical/Catalog Information	6N138
Vendor	Lite-On Inc
Category	Isolators
Isolation Voltage	5000Vrms
Input Type	DC
Output Type	Darlington with Vcc
Current - Output/Channel	60mA
Voltage - Output	7V
Vce Saturation (Max)	-
Current Transfer Ratio (Min)	300% @ 1.6mA
Mounting Type	Through Hole
Package / Case	8-DIP
Packaging	Tube
Number of Circuits	1 - Single
Lead Free Status	Lead Free
RoHS Status	RoHS Compliant
Other Names	6N138 6N138 160 1795 ND 1601795ND 160-1795