FOD270L

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 : 7000 %


Features:

• Low power consumption
• Low input current - 0.5 mA
• Available in single channel 8-pin DIP (FOD270L), 8-pin SOIC (FOD070L) and dual channel 8-pin SOIC
• High CTR-2000%
• High CMR-10 kV/s
• Guaranteed performance over temperature 0°C to 70°C
• U.L. recognized (File # E90700)
• LVTTL/LVCMOS Compatible output


Application

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


Pinout




Specifications

Parameter	Symbol	Value	Units
Storage Temperature	TSTG	-40 to +125	°C
Operating Temperature	TOPR	-40 to +85	°C
Lead Solder Temperature (Wave solder only. See reflow profile for surface mount devices)	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)                                                                     Each Channel	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 (FOD070L, FOD270L)                                                                         Each Channel	VEB	0.5	V
Supply Voltage, Output Voltage                  Each Channel	VO,VCC	-0.5 to 7	V
Output power dissipation                           Each Channel	PD	100	mW

Description

The FOD070L, FOD270L and FOD073L optocouplers consist of an AlGaAs LED optically coupled to a high gain split darlington photodetector. These devices are specified to operate at a 3.3V supply voltage.

The split darlington configuration separating the input photodiode and the first stage gain from the output transistor permits lower output saturation voltage and higher speed operation than possible with conventional darlington phototransistor optocoupler. In the dual channel device FOD073L, 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 particularly useful for input interface
to MOS, CMOS, LSTTL and EIA RS232C, while output compatibility is ensured to LVCMOS as well as high fan-out LVTTL requirements.

An internal noise shield of FOD070L, FOD270L and FOD073L provides exceptional common mode rejection of 10 kV/s.