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PDF FOD270L Data sheet ( Hoja de datos )
| Número de pieza | FOD270L | |
| Descripción | (FOD070L - FOD270L) LVTTL/LVCMOS COMPATIBLE LOW INPUT CURRENT HIGH GAIN SPLIT DARLINGTON OPTOCOUPLERS | |
| Fabricantes | Fairchild Semiconductor | |
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LVTTL/LVCMOS COMPATIBLE LOW INPUT
CURRENT HIGH GAIN SPLIT DARLINGTON
OPTOCOUPLERS
SINGLE CHANNEL:
DUAL CHANNEL:
FOD070L
FOD073L
FOD270L
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 inte-
grated 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 provides exceptional common mode rejection of
10 kV/µs.
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/µs
• Guaranteed performance over temperature 0°C to 70°C
• U.L. recognized (File # E90700)
• LVTTL/LVCMOS Compatible output
APPLICATIONS
• Digital logic ground isolation – LVTTL/LVCMOS
• Telephone ring detector
• EIA-RS-232C line receiver
• High common mode noise line receiver
• µP bus isolation
• Current loop receiver
TRUTH TABLE
LED
ON
OFF
VO
LOW
HIGH
8
1
8
1
8
N/C 1
+2
V
F
_3
N/C 4
8
V
CC
7
V
B
6V
O
5 GND
FOD070L / FOD270L
1
+1
V
F1
_2
_3
V
F2
+4
8
V
CC
7
V
01
6V
02
5 GND
FOD073L
© 2004 Fairchild Semiconductor Corporation
Page 1 of 17
8/10/04
1 page  
SINGLE CHANNEL:
DUAL CHANNEL:
LVTTL/LVCMOS COMPATIBLE LOW INPUT
CURRENT HIGH GAIN SPLIT DARLINGTON
OPTOCOUPLERS
FOD070L
FOD073L
FOD270L
TYPICAL PERFORMANCE CURVES
Fig. 1 Input Forward Current vs Forward Voltage
100
10
TA = 85°C
TA = 70°C
1
TA = 25°C
0.1
TA = -40°C
TA = 0°C
0.01
0.001
0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7
VF - FORWARD VOLTAGE (V)
Fig. 3 Current Transfer Ratio vs. Input Forward Current
(FOD070L only)
4500
4000
3500
TA = 85°C
TA = 70°C
VO = 0.4V
VCC = 3.3V
TA = 25°C
3000
TA = 25°C
2500
2000
TA = 0°C
1500
1000
TA = -40°C
500
0
0.1 1 10
IF - FORWARD CURRENT (mA)
Fig. 5 DC Transfer Charactersitics (FOD070L, FOD270L)
160
TA = 25°C
140 VCC = 3.3V
120
100
80
60
IF = 5mA
IF = 4.5mA
4mA
3.5mA
3mA
2.5mA
2mA
1.5mA
40
1mA
20
0.5mA
0
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
VO - OUTPUT VOLTAGE (V)
Fig. 2 Current Transfer Ratio vs. Input Forward Current
(FOD270L only)
4500
4000
3500
3000
TA = 85°C
TA = 70°C
TA = 25°C
VO = 0.4V
VCC = 3.3V
TA = 25°C
2500
2000
TA = 0°C
1500
1000
TA = -40°C
500
0
0.1 1 10
IF - FORWARD CURRENT (mA)
Fig. 4 Current Transfer Ratio vs. Input Forward Current
(FOD073L only)
3500
3000
TA = 85°C
VO = 0.4V
VCC = 3.3V
TA = 25°C
2500
TA = 70°C
TA = 25°C
2000
TA = 0°C
1500
1000
500
TA = -40°C
0
0.1 1 10
IF - FORWARD CURRENT (mA)
Fig. 6 DC Transfer Characterstics (FOD073L only)
140
TA = 25°C
VCC = 3.3V
120
100
80
60
40
20
IF = 5mA
IF = 4.5mA
4mA
3.5mA
3mA
2.5mA
2mA
1.5mA
1mA
0.5mA
0
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
VO - OUTPUT VOLTAGE (V)
© 2004 Fairchild Semiconductor Corporation
Page 5 of 17
8/10/04
5 Page 
LVTTL/LVCMOS COMPATIBLE LOW INPUT
CURRENT HIGH GAIN SPLIT DARLINGTON
OPTOCOUPLERS
SINGLE CHANNEL:
DUAL CHANNEL:
FOD070L
FOD073L
SOIC 8
Package Dimensions (Surface Mount)
FOD270L
Recommend Pad Layout
0.164 (4.16)
0.144 (3.66)
0.202 (5.13)
0.182 (4.63)
0.143 (3.63)
0.123 (3.13)
0.010 (0.25)
0.006 (0.16)
0.021 (0.53)
0.011 (0.28)
0.008 (0.20)
0.003 (0.08)
0.050 (1.27)
TYP
0.244 (6.19)
0.224 (5.69)
Lead Coplanarity : 0.004 (0.10) MAX
0.275 (6.99)
0.155 (3.94)
0.024 (0.61)
0.060 (1.52)
0.050 (1.27)
© 2004 Fairchild Semiconductor Corporation
Page 11 of 17
8/10/04
11 Page | ||
| Páginas | Total 17 Páginas | |
| PDF Descargar | [ Datasheet FOD270L.PDF ] | |
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