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부품번호 | FOD073L 기능 |
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기능 | (FOD070L - FOD270L) LVTTL/LVCMOS COMPATIBLE LOW INPUT CURRENT HIGH GAIN SPLIT DARLINGTON OPTOCOUPLERS | ||
제조업체 | Fairchild Semiconductor | ||
로고 | |||
전체 17 페이지수
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
SINGLE CHANNEL:
DUAL CHANNEL:
LVTTL/LVCMOS COMPATIBLE LOW INPUT
CURRENT HIGH GAIN SPLIT DARLINGTON
OPTOCOUPLERS
FOD070L
FOD073L
FOD270L
ISOLATION CHARACTERISTICS (TA = 0 to 70°C Unless otherwise specified)
Characteristics
Test Conditions Symbol Device Min Typ** Max Unit
Input-output
insulation leakage current
(Relative humidity = 45%)
(TA = 25°C, t = 5 s)
(VI-O = 3000 VDC)
(Note 4)
II-O
Withstand insulation
test voltage
(RH ≤ 50%, TA = 25°C)
(Note 4) ( t = 1 min.)
VISO
Resistance (input to output)
Capacitance (input to output)
Input-Input
Insulation leakage current
Input-Input Resistance
Input-Input Capacitance
(Note 4) (VI-O = 500 VDC)
(Note 4,5) (f = 1 MHz)
(RH ≤ 45%, VI-I = 500 VDC (Note 6)
(VI-I = 500 VDC) (Note 6)
(f = 1 MHz) (Note 6)
RI-O
CI-O
II-I
RI-I
CI-I
ALL
FOD070L
FOD073L
FOD270L
ALL
ALL
2500
5000
FOD073L 0.005
FOD073L
FOD073L
1012
0.7
1011
0.03
1.0 µA
VRMS
Ω
pF
µA
Ω
pF
** All typicals at TA = 25°C
NOTES
1. Current Transfer Ratio is defined as a ratio of output collector current, IO, to the forward LED input current, IF, times 100%.
2. Pin 7 open. (FOD070L and FOD270L only)
3. Common mode transient immunity in logic high level is the maximum tolerable (positive) dVCM/dt on the leading edge of the
common mode pulse signal, VCM, to assure that the output will remain in a logic high state (i.e., VO>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, VCM, to assure that the output will remain in a logic low state (i.e., VO<0.8 V).
4. Device is considered a two terminal device: Pins 1, 2, 3 and 4 are shorted together and Pins 5, 6, 7 and 8 are shorted together.
5. For dual channel devices, CI-O is measured by shorting pins 1 and 2 or pins 3 and 4 together and pins 5 through 8 shorted
together.
6. Measured between pins 1 and 2 shorted together, and pins 3 and 4 shorted together.
© 2004 Fairchild Semiconductor Corporation
Page 4 of 17
8/10/04
4페이지 SINGLE CHANNEL:
DUAL CHANNEL:
LVTTL/LVCMOS COMPATIBLE LOW INPUT
CURRENT HIGH GAIN SPLIT DARLINGTON
OPTOCOUPLERS
FOD070L
FOD073L
FOD270L
TYPICAL PERFORMANCE CURVES
Fig. 13 Propagation Delay vs.
Ambient Temperature (FOD070L, FOD270L)
14
VCC = 3.3V
IF = 0.5mA
12 RL = 4.7kΩ
1/f = 200µs
Duty Cycle = 10%
10
140
120
100
8 80
tPLH
6 60
4 40
tPHL
2 20
0
-40
-20
0
0 20 40 60 80 100
TA - Ambient Temperature (°C)
Fig. 14 Propagation Delay To Logic Low vs Pulse Period
(FOD073L, FOD070L, FOD270L)
100
TA = 25°C
VCC = 3.3V
I = 0.5mA
RL = 4.7kΩ
Duty Cycle = 50µs
FOD073L
10
FOD070L,
FOD270L
1
0.01 0.1
1
T - Pulse Period (ms)
10
Fig. 15 Propagation Delay vs.
Input Forward Current (FOD270L only)
5
TA = 25°C
VCC = 3.3V
4
RL = 4.7kΩ
1/f = 100µs
Duty Cycle = 10%
tPLH
3
52
50
48
2 46
1 44
tPHL
0 42
0 1 2 3 4 5 6 7 8 9 10
I F - Input Forward Current (mA)
Fig. 16 Propagation Delay vs.
Input Forward Current (FOD073L only)
12
TA = 25°C
VCC = 3.3V
10 RL = 4.7kΩ
1/f = 100µs
Duty Cycle = 10%
8
tPLH
28
26
24
6 22
4 20
2 18
tPHL
0 16
0 1 2 3 4 5 6 7 8 9 10
I F - Input Forward Current (mA)
© 2004 Fairchild Semiconductor Corporation
Page 7 of 17
8/10/04
7페이지 | |||
구 성 | 총 17 페이지수 | ||
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부품번호 | 상세설명 및 기능 | 제조사 |
FOD0738 | (FOD0708 / FOD0738) Optocouplers consist of an AlGaAs LED optically coupled to a high speed trans-impedance amplifier and voltage comparator | Fairchild Semiconductor |
FOD073L | (FOD070L - FOD270L) LVTTL/LVCMOS COMPATIBLE LOW INPUT CURRENT HIGH GAIN SPLIT DARLINGTON OPTOCOUPLERS | Fairchild Semiconductor |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |