FOD050LTV [FAIRCHILD]
LVTTL/LVCMOS 3.3V High Speed Transistor Optocouplers; LVTTL / LVCMOS 3.3V高速晶体管光电耦合器
| 型号： | FOD050LTV |
| 厂家： | 
FAIRCHILD SEMICONDUCTOR |
| 描述： | LVTTL/LVCMOS 3.3V High Speed Transistor Optocouplers |
| 文件： | 总13页 (文件大小：366K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
August 2008
FOD050L, FOD250L: Single Channel
FOD053L: Dual Channel
LVTTL/LVCMOS 3.3V High Speed Transistor Optocouplers
Features
Description
■ Low power consumption
The FOD250L, FOD050L and FOD053L optocouplers
consist of an AlGaAs LED optically coupled to a high
speed photodetector transistor. These devices are speci-
fied for operation at a 3.3V supply voltage.
■ High speed
■ Available in single channel 8-pin DIP (FOD250L),
8-pin SOIC (FOD050L) or dual channel 8-pin SOIC
(FOD053L)
A separate connection for the bias of the photodiode
improves the speed by several orders of magnitude over
conventional
■ Superior CMR – CM = 50kV/µs (typical) and
H
CM = 35kV/µs (typical)
L
phototransistor optocouplers by reducing the base-
collector capacitance of the input transistor.
■ Guaranteed performance over temperature:
0°C to 70°C
■ U.L. recognized (File # E90700)
■ VDE pending
An internal noise shield provides superior common
mode rejection of CM = 50kV/ms (typical) and CM =
35kV/ms (typical).
H
L
Applications
■ Line receivers
■ Pulse transformer replacement
■ High speed logic ground isolation: LVTTL/LVCMOS
■ Wide bandwidth analog coupling
Schematics
Package Outlines
VCC
8
+
VCC
1
N/C
1
8
8
8
1
VF1
_
1
V01
7
VB
2
+
2
3
4
7
6
5
VF
_
_
V02
3
6
5
8
VO
8
VF2
1
1
GND
N/C
GND
+
4
Truth Table
LED
On
V
O
LOW
FOD053L
FOD050L, FOD250L
Off
HIGH
©2003 Fairchild Semiconductor Corporation
FOD050L, FOD250L, FOD053L Rev. 1.0.2
www.fairchildsemi.com
Absolute Maximum Ratings (T = 25°C unless otherwise specified.)
A
Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be
operable above the recommended operating conditions and stressing the parts to these levels is not recommended.
In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability.
The absolute maximum ratings are stress ratings only.
Symbol
Parameter
Value
Units
°C
T
Storage Temperature
Operating Temperature
-40 to +125
-40 to +85
STG
T
°C
OPR
T
Lead Solder Temperature (Wave solder only)
260 for 10 sec
°C
SOL
EMITTER
I (avg)
DC/Average Forward Input Current
Each Channel
Each Channel
25
50
mA
mA
F
I (pk)
Peak Forward Input Current
(50% duty cycle, 1ms P.W.)
F
I (trans) Peak Transient Input Current
Each Channel
1.0
A
F
(≤1 µs P.W., 300pps)
V
P
Reverse Input Voltage
Each Channel
Each Channel
5
V
R
D
Input Power Dissipation
45
mW
(No derating required up to 85°C)
DETECTOR
I
(avg)
(pk)
Average Output Current
Peak Output Current
Emitter-Base Reverse Voltage
Supply Voltage
Each Channel
8
16
mA
mA
V
O
I
Each Channel
O
V
FOD050L, FOD250L only
5
EBR
V
-0.5 to 7
-0.5 to 7
5
V
CC
V
Output Voltage
V
O
I
Base Current
FOD050L, FOD250L only
Each Channel
mA
mW
B
P
Output Power Dissipation
100
D
(No derating required up to 85°C)
©2003 Fairchild Semiconductor Corporation
FOD050L, FOD250L, FOD053L Rev. 1.0.2
www.fairchildsemi.com
2
Electrical Characteristics (T = 0 to 70°C unless otherwise specified.)
A
Individual Component Characteristics
Symbol
EMITTER
Parameter
Test Conditions
Device
Min. Typ.* Max. Unit
V
Input Forward Voltage
I = 16mA, T =25°C
All
All
1.45
1.7
1.8
V
V
F
F
A
I = 16mA
F
B
Input Reverse
I = 10µA
5.0
VR
R
Breakdown Voltage
DETECTOR
I
Logic High Output
Current
I = 0mA, V = V = 3.3V,
All
0.001
1
µA
µA
OH
F
O
CC
T = 25°C
A
I
Logic Low Supply
Current
I = 16mA, V = Open,
FOD050L
FOD250L
200
400
0.3
10
CCL
F
O
V
= 3.3V
CC
I
= I = 16mA,
FOD053L
F1
F2
V = Open, V = 3.3V
O
CC
I
Logic High Supply
Current
I = 0mA, V = Open,
FOD050L
FOD250L
µA
CCH
F
O
V
= 3.3V, T = 25°C
CC
A
I = 0mA, V = Open,
FOD053L
F
O
V
= 3.3V
CC
**All Typicals at T = 25°C
A
Transfer Characteristics
Symbol
Parameter
Test Conditions
Device
Min. Typ.** Max. Unit
COUPLED
(1)
CTR
Current Transfer Ratio
I = 16mA, V = 0.4 V,
All
All
15
50
%
V
F
O
V
= 3.3V, T = 25°C
CC
A
V
Logic Low Output
I = 16mA, I = 3mA,
0.3
OL
F
O
Voltage Output Voltage
V
= 3.3V, T = 25°C
CC A
*All Typicals at T = 25°C
A
Note:
1. Current Transfer Ratio is defined as a ratio of output collector current, I , to the forward LED input current, I , times
O
F
100%.
©2003 Fairchild Semiconductor Corporation
FOD050L, FOD250L, FOD053L Rev. 1.0.2
www.fairchildsemi.com
3
Electrical Characteristics (Continued) (T = 0 to 70°C unless otherwise specified.)
A
Switching Characteristics (V = 3.3V)
CC
Symbol
Parameter
Test Conditions
Device Min.
Typ.** Max. Unit
(2)
T
Propagation Delay
Time to Logic LOW
R = 1.9kΩ, I = 16mA
25°C
25°C
All
1.0
2.0
1.0
2.0
µs
PHL
L
F
(Fig. 10)
(2)
T
Propagation Delay
Time to Logic HIGH
R = 1.9kΩ, I = 16mA
All
µs
PLH
L
F
(Fig. 10)
|CM | Common Mode
I = 0mA, V
= 1,000V
,
All
5,000
5,000
5,000
50,000
50,000
35,000
V/µs
V/µs
V/µs
H
F
CM
P-P
(3,4)
Transient Immunity
at Logic HIGH
R = 4.1kΩ, T = 25°C
(Fig. 11)
L
A
I = 0mA, V
= 1,000V
,
F
CM
P-P
(2,4)
T = 25°C, R = 1.9kΩ
(Fig. 11)
A
L
|CM | Common Mode
I = 16mA, V
= 1,000V
,
All
L
F
CM
P-P
(3,4)
Transient Immunity
at Logic LOW
R = 4.1kΩ. T = 25°C
L
A
(Fig. 11)
I = 16mA, V
= 1,000 V
,
P-P
5,000
35,000
V/µs
F
CM
(2,4)
R = 1.9kΩ
(Fig. 11)
L
Isolation Characteristics
Symbol
Characteristics
Test Conditions
Device
Min. Typ.** Max.
Unit
I
Input-Output
Insulation Leakage
Current
Relative humidity = 45%,
All
1.0
µA
I-O
T = 25°C, t = 5s,
A
(5)
V
= 3000VDC
I-O
V
Withstand Insulation
Test Voltage
f = 60Hz, T = 25°C,
FOD050L
FOD053L
2500
5000
V
RMS
ISO
A
(5)
t = 1 min.
FOD250L
All
(5)
11
12
R
C
Resistance
(input to output)
V
= 500VDC
I-O
10
10
Ω
I-O
(5)
Capacitance
f = 1MHz
All
0.2
pF
I-O
(input to output)
*All Typicals at T = 25°C
A
Notes:
2. The 1.9kΩ load represents 1 TTL unit load of 1.6mA and 5.6kΩ pull-up resistor.
3. The 4.1kΩ load represents 1 LSTTL unit load of 0.36mA and 6.1kΩ pull-up resistor.
4. Common mode transient immunity in logic high level is the maximum tolerable (positive) dV /dt on the leading
cm
edge of the common mode pulse signal V , to assure that the output will remain in a logic high state
CM
(i.e., V > 2.0V). Common mode transient immunity in logic low level is the maximum tolerable (negative)
O
dV /dt on the trailing edge of the common mode pulse signal, V , to assure that the output will remain in a
cm
CM
logic low state (i.e., V < 0.8V).
O
5. 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.
©2003 Fairchild Semiconductor Corporation
FOD050L, FOD250L, FOD053L Rev. 1.0.2
www.fairchildsemi.com
4
Typical Performance Curves
Fig. 2 Current Transfer Ratio vs. Forward Current
(FOD050L, FOD053L)
Fig. 1 LED Forward Current vs. Forward Voltage
100
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
VO = 0.4V
Normalized to
IF = 16mA, TA = 25°C
VCC = 3.3V
10
TA = 70°C
TA = 85°C
TA = 85°C
T
A = 70°C
T
A = -40°C
1
0.1
TA = 25°C
TA = 25°C
TA = 0°C
TA = 0°C
0.01
0.001
TA = -40°C
0.9
1.0
1.1
1.2
1.3
1.4
1.5
1.6
1.7
0
5
10
15
20
25
V
– FORWARD VOLTAGE (V)
I
– FORWARD CURRENT (mA)
F
F
Fig. 3 Current Transfer Ratio vs. Input Forward Current
(FOD250L)
Fig. 4 Current Transfer Ratio vs. Ambient Temperature
1.4
1.3
1.2
1.1
1.6
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
V
V
= 0.4V
= 3.3V
Normalized to
O
I
V
V
= 16mA
= 0.4V
F
Normalized to T = 25°C
I
= 16mA, T = 25°C
A
CC
F
A
O
1.4
1.2
1.0
0.8
0.6
0.4
0.2
T
= 85°C
= 70°C
= 3.3V
A
CC
T
A
T
= 25°C
A
1.0
0.9
0.8
0.7
T
= 0°C
A
T
= -40°C
A
0.6
0.5
0.0
0.0
0
5
10
15
20
25
-40
-20
0
20
40
60
80
100
I
– FORWARD CURRENT (mA)
F
T
– AMBIENT TEMPERATURE (°C)
A
Fig. 5 Output Current vs. Output Voltage
Fig 6. Logic High Output Current vs. Ambient Temperature
12
10
8
10
T
V
= 25°C
V
I
= V = 3.3V
CC
= 0
A
O
= 3.3V
F
CC
I
= 25mA
F
1
20mA
15mA
10mA
5mA
6
0.1
4
2
0
0.01
-40
-20
0
20
40
60
80
100
0
2
4
6
8
10
12
14
16
T
– AMBIENT TEMPERATURE (°C)
A
V
– OUTPUT VOLTAGE (V)
O
©2003 Fairchild Semiconductor Corporation
FOD050L, FOD250L, FOD053L Rev. 1.0.2
www.fairchildsemi.com
5
Typical Performance Curves (Continued)
Fig. 8 Propagation Delay vs. Ambient Temperature
Fig. 7 Supply Current vs. Input Forward Current
120
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
V
= 3.3V
T
= 25°C
CC
A
I
= 16mA
V
= 3.3V
CC
F
100
80
60
40
20
0
t
, R = 4.1kΩ
L
PLH
t
, R = 1.9kΩ
, R
L
PLH
t
, R = 1.9kΩ & 4.1kΩ
PHL
L
0
2
4
6
8
10
12
14
16
-40
-20
0
20
40
60
80
100
I
– INPUT FORWARD CURRENT (mA)
T
– AMBIENT TEMPERATURE (°C)
F
A
Fig. 9 Propagation Delay vs Load Resistance
10
V
T
= 3.3V
CC
= 25°C
A
t
, I = 16mA
F
PLH
t
, I = 10mA
F
PLH
1
t
, I = 10mA
F
PHL
t
, I = 16mA
PHL
F
0.1
2
3
5
1
10
R
– LOAD RESISTANCE (kΩ)
L
©2003 Fairchild Semiconductor Corporation
FOD050L, FOD250L, FOD053L Rev. 1.0.2
www.fairchildsemi.com
6
Test Circuits
Noise
Shield
Noise
Shield
Pulse
+
VCC
I
F
V
CC
Generator
tr = 5ns
+3.3 V
+3.3 V
1
2
3
4
8
7
6
5
1
2
3
4
8
7
6
5
Pulse
ZO = 50
Ω
R
L
Generator
V
F1
IF
+
VB
tr = 5ns
ZO= 50
10% D.C.
I/f< 100µs
V01
-
10% DUTY CYCLE
I/f < 100µS
VO
RL
Ω
VF
-
C
L
= 1.5 pF
VO
V02
-
VO
I
F
V
F2
0.1 µF
MONITOR
+
0.1 µF
IF Monitor
GND
Rm
Rm
C
L = 1.5 pF
GND
Test Circuit for FOD050L and FOD250L
Test Circuit for FOD053L
IF
0
3.3 V
VO
50%
50%
VOL
TPHL
TPLH
Fig. 10 Switching Time Test Circuit
IF
Noise
Shield
Noise
Shield
VCC
V
CC
+
+3.3 V
+3.3 V
VO
1
2
3
4
8
7
6
5
1
2
3
4
8
7
6
5
IF
R
L
V
F1
+
VB
V01
-
RL
A
VF
-
A
VO
V02
B
-
0.1 µF
VO
0.1 µF
B
VFF
V
F2
VFF
+
GND
GND
-
VCM
+
-
VCM
-
+
Pulse Gen
Pulse Gen
Test Circuit for FOD050L and FOD250L
Test Circuit for FOD053L
VCM 1000 V
0 V
90% 90%
10%
tr
10%
tf
VO
3.3 V
VOL
Switch at A : IF = 0 mA
VO
Switch at A : IF = 16 mA
Fig. 11 Common Mode Immunity Test Circuit
©2003 Fairchild Semiconductor Corporation
FOD050L, FOD250L, FOD053L Rev. 1.0.2
www.fairchildsemi.com
7
Package Dimensions
Through Hole
0.4" Lead Spacing
PIN 1
ID.
PIN 1
ID.
1
0.270 (6.86)
0.250 (6.35)
0.270 (6.86)
0.250 (6.35)
0.390 (9.91)
0.370 (9.40)
0.070 (1.78)
0.045 (1.14)
0.390 (9.91)
0.370 (9.40)
0.020 (0.51) MIN
0.200 (5.08)
0.140 (3.55)
0.070 (1.78)
0.045 (1.14)
0.154 (3.90)
0.120 (3.05)
0.004 (0.10) MIN
0.200 (5.08)
0.140 (3.55)
15° MAX
0.022 (0.56)
0.016 (0.41)
0.016 (0.40)
0.008 (0.20)
0.154 (3.90)
0.120 (3.05)
0.300 (7.62)
TYP
0.100 (2.54) TYP
0.022 (0.56)
0.016 (0.41)
0° to 15°
0.016 (0.40)
0.008 (0.20)
0.400 (10.16)
TYP
0.100 (2.54) TYP
Surface Mount
8-Pin DIP – Land Pattern
0.390 (9.91)
0.370 (9.40)
0.070 (1.78)
PIN 1
ID.
0.060 (1.52)
0.270 (6.86)
0.250 (6.35)
0.100 (2.54)
0.295 (7.49)
0.415 (10.54)
0.030 (0.76)
0.300 (7.62)
TYP
0.070 (1.78)
0.045 (1.14)
0.020 (0.51)
MIN
0.016 (0.41)
0.008 (0.20)
0.045 (1.14)
0.022 (0.56)
0.016 (0.41)
0.315 (8.00)
MIN
0.100 (2.54)
TYP
0.405 (10.30)
MAX.
Lead Coplanarity : 0.004 (0.10) MAX
Note:
All dimensions are in inches (millimeters)
©2003 Fairchild Semiconductor Corporation
FOD050L, FOD250L, FOD053L Rev. 1.0.2
www.fairchildsemi.com
8
Package Dimensions (Continued) (8-Pin SOIC)
Surface Mount
8-Pin Small Outline
PIN 1
ID.
0.024 (0.61)
0.164 (4.16)
0.144 (3.66)
0.060 (1.52)
0.275 (6.99)
0.155 (3.94)
0.202 (5.13)
0.182 (4.63)
0.010 (0.25)
0.006 (0.16)
0.143 (3.63)
0.123 (3.13)
0.244 (6.19)
0.050 (1.27)
0.008 (0.20)
0.224 (5.69)
0.003 (0.08)
0.021 (0.53)
0.011 (0.28)
0.050 (1.27)
TYP
Lead Coplanarity : 0.004 (0.10) MAX
©2003 Fairchild Semiconductor Corporation
FOD050L, FOD250L, FOD053L Rev. 1.0.2
www.fairchildsemi.com
9
Ordering Information
Order Entry
Identifier
Option
Description
No Suffix
FOD250L
FOD050L
Through Hole (DIP package only)
Surface Mount Lead Form (SOIC-8 package only)
Surface Mount Lead Bend (DIP package only)
Surface Mount; Tape and reel (DIP package only)
Surface Mount; VDE0884 (DIP package only)
S
FOD250LS
SD
SV
FOD250LSD
Pending Approval
Pending Approval
SDV
Surface Mount; Tape and reel, VDE0884 (1000 units per reel)
(DIP package only)
T
TV
R1
R1V
R2
R2V
V
FOD250LT
0.4" Lead Spacing (DIP package only)
Pending Approval
FOD050LR1
0.4" Lead Spacing, VDE0884 (DIP package only)
Tape and Reel (500 units per reel) (SOIC-8 package only)
VDE, Tape and Reel (500 units per reel) (SOIC-8 package only)
Tape and Reel (2500 units per reel) (SOIC-8 package only)
VDE, Tape and Reel (2500 units per reel) (SOIC-8 package only)
VDE (SOIC-8 package only)
Pending Approval
FOD050LR2
Pending Approval
Pending Approval
Marking Information
DIP
SOIC
2
1
1
50L
6
2
6
X
V
YY S
250L
V XX YY T1
5
3
4
5
3
4
Definitions
1
2
Fairchild logo
Device number
VDE mark (Note: Only appears on parts ordered with VDE
option – See order entry table)
3
4 (DIP) Two digit year code, e.g., ‘03’
4 (SOIC) One digit year code, e.g., ‘3’
5
6
Two digit work week ranging from ‘01’ to ‘53’
Assembly package code
©2003 Fairchild Semiconductor Corporation
FOD050L, FOD250L, FOD053L Rev. 1.0.2
www.fairchildsemi.com
10
Carrier Tape Specification
8-Pin DIP (FOD250L)
12.0 ±0.1
4.0 ±0.1
Ø1.55 ±0.05
1.75 ±0.10
4.90 ±0.20
0.30 ±0.05
4.0 ±0.1
7.5 ±0.1
10.30 ±0.20
13.2 ±0.2
16.0 ±0.3
Ø1.6 ±0.1
0.1 MAX
10.30 ±0.20
User Direction of Feed
8-Pin SOIC (FOD050L, FOD053L)
8.0 ± 0.10
2.0 ± 0.05
3.50 ± 0.20
Ø1.5 MIN
0.30 MAX
4.0 ± 0.10
1.75 ± 0.10
5.5 ± 0.05
12.0 ± 0.3
8.3 ± 0.10
5.20 ± 0.20
Ø1.5 ± 0.1/-0
6.40 ± 0.20
0.1 MAX
User Direction of Feed
©2003 Fairchild Semiconductor Corporation
FOD050L, FOD250L, FOD053L Rev. 1.0.2
www.fairchildsemi.com
11
Reflow Profile
8-Pin DIP (FOD250L)
• Peak reflow temperature
• Time of temperature higher than 245°C
• Number of reflows
260°C (package surface temperature)
40 seconds or less
Three
10s
300
260°
245°
250
200
150
100
50
40s
50
100
150
200
250
Time (s)
8-Pin SOIC (FOD050L, FOD053L)
300
280
260
240
220
200
180
260°C
>245°C = 42 Sec
Time above
160
°C
183°C = 90 Sec
140
120
100
80
1.822°C/Sec Ramp up rate
60
40
33 Sec
20
0
0
60
120
180
270
360
Time (s)
©2003 Fairchild Semiconductor Corporation
FOD050L, FOD250L, FOD053L Rev. 1.0.2
www.fairchildsemi.com
12
TRADEMARKS
The following includes registered and unregistered trademarks and service marks, owned by Fairchild Semiconductor and/or its global subsidiaries, and is not
intended to be an exhaustive list of all such trademarks.
PDP SPM™
The Power Franchise®
Build it Now™
CorePLUS™
CorePOWER™
CROSSVOLT™
CTL™
FPS™
Power-SPM™
PowerTrench®
Programmable Active Droop™
QFET®
F-PFS™
FRFET®
Global Power ResourceSM
Green FPS™
Green FPS™e-Series™
GTO™
TinyBoost™
TinyBuck™
TinyLogic®
TINYOPTO™
TinyPower™
TinyPWM™
TinyWire™
µSerDes™
QS™
Current Transfer Logic™
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Saving our world, 1mW at a time™
SmartMax™
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™
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Fairchild Semiconductor®
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®
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®
* EZSWITCH™ and FlashWriter® are trademarks of System General Corporation, used under license by Fairchild Semiconductor.
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FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE
EXPRESS WRITTEN APPROVAL OF FAIRCHILD SEMICONDUCTOR CORPORATION.
As used herein:
1. Life support devices or systems are devices or systems which, (a) are
intended for surgical implant into the body or (b) support or sustain life,
and (c) whose failure to perform when properly used in accordance
with instructions for use provided in the labeling, can be reasonably
expected to result in a significant injury of the user.
2. A critical component in any component of a life support, device, or
system whose failure to perform can be reasonably expected to
cause the failure of the life support device or system, or to affect its
safety or effectiveness.
ANTI-COUNTERFEITING POLICY
Fairchild Semiconductor Corporation's Anti-Counterfeiting Policy. Fairchild's Anti-Counterfeiting Policy is also stated on our external website, www.fairchildsemi.com,
under Sales Support.
Counterfeiting of semiconductor parts is a growing problem in the industry. All manufacturers of semiconductor products are experiencing counterfeiting of their parts.
Customers who inadvertently purchase counterfeit parts experience many problems such as loss of brand reputation, substandard performance, failed applications,
and increased cost of production and manufacturing delays. Fairchild is taking strong measures to protect ourselves and our customers from the proliferation of
counterfeit parts. Fairchild strongly encourages customers to purchase Fairchild parts either directly from Fairchild or from Authorized Fairchild Distributors who are
listed by country on our web page cited above. Products customers buy either from Fairchild directly or from Authorized Fairchild Distributors are genuine parts, have
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Fairchild and our Authorized Distributors will stand behind all warranties and will appropriately address any warranty issues that may arise. Fairchild will not provide
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PRODUCT STATUS DEFINITIONS
Definition of Terms
Datasheet Identification Product Status
Definition
Datasheet contains the design specifications for product development. Specifications may change in
any manner without notice.
Advance Information
Preliminary
Formative / In Design
Datasheet contains preliminary data; supplementary data will be published at a later date. Fairchild
Semiconductor reserves the right to make changes at any time without notice to improve design.
First Production
Full Production
Not In Production
Datasheet contains final specifications. Fairchild Semiconductor reserves the right to make changes
at any time without notice to improve the design.
No Identification Needed
Obsolete
Datasheet contains specifications on a product that is discontinued by Fairchild Semiconductor. The
datasheet is for reference information only.
Rev. I35
©2003 Fairchild Semiconductor Corporation
FOD050L, FOD250L, FOD053L Rev. 1.0.2
www.fairchildsemi.com
13
相关型号：
FOD050L_09
FOD050L, FOD250L: Single Channel FOD053L: Dual Channel LVTTL/LVCMOS 3.3V High Speed Transistor Optocouplers
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