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参数资料
| 型号： | FOD8012 |
| 厂商： | Fairchild Optoelectronics Group |
| 文件页数： | 1/12页 |
| 文件大小： | 0K |
| 描述： | OPTOCOUPLER BIDIR 3.3V 5V 8SOIC |
| 标准包装： | 3,000 |
| 电压 - 隔离： | 3750Vrms |
| 通道数： | 2，双向 |
| 电流 - 输出 / 通道： | 10mA |
| 数据速率： | 15Mbps |
| 传输延迟高 - 低 @ 如果： | 37ns |
| 电流 - DC 正向(If)： | ±10mA |
| 输入类型： | 逻辑 |
| 输出类型： | 推挽式/图腾柱 |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SO |
| 包装： | 管件 |
November 2010
FOD8012
High CMR, Bi-Directional, Logic Gate Optocoupler
Features
■ Full Duplex, Bi-Directional
■ 20kV/μs Minimum Common Mode Rejection
■ High Speed:
– 15Mbit/sec Data Rate (NRZ)
Description
The FOD8012 is a full duplex, bi-directional, high-speed
logic gate Optocoupler, which supports isolated commu-
nications allowing digital signals to communicate
between systems without conducting ground loops or
hazardous voltages. It utilizes Fairchild’s proprietary co -
– 60ns max. Propagation Delay
pla nar packaging technology, Optoplanar ? ,
and opti -
– 15ns max. Pulse Width Distortion
– 30ns max. Propagation Delay Skew
■ 3.3V and 5V CMOS Compatibility
■ Extended industrial temperate range, -40 to +110?C
temperature range
■ Safety and regulatory approvals
– UL1577, 3750 VAC RMS for 1 min.
– DIN EN/IEC60747-5-2 (approval pending)
Applications
■ Industrial ?eldbus communications
– DeviceNet, CAN, RS485, RS232
■ Microprocessor System Interface
– SPI, I 2 C
■ Programmable Logic Control
■ Isolated Data Acquisition System
■ Voltage Level Translator
Functional Schematic
IC design to achieve minimum 20kV/μs Common Mode
Noise Rejection (CMR) rating.
This high-speed logic gate optocoupler is highly inte-
grated with 2 optically coupled channels arranged in
bi-directional configuration, and housed in a compact
8-pin small outline package. Each optocoupler channel
consists of a high-speed AlGaAs LED driven by a CMOS
buffer IC coupled to a CMOS detector IC. The detector
IC comprises of an integrated photodiode, a high-speed
trans-impedance amplifier and a voltage comparator
with an output driver. The CMOS technology coupled to
the high efficiency of the LED achieves low power con-
sumption as well as very high speed (60ns propagation
delay, 15ns pulse width distortion).
Related Resources
■ FOD8001, High Noise Immunity, 3.3V/5V Logic Gate
Optocoupler Datasheet
■ www.fairchildsemi.com/products/opto/
V DD1
1
8
V DD2
Truth Table
V OA
2
7
V INA
VIN
LED
VO
High
Low
OFF
ON
High
Low
V INB
GND 1
3
4
6
5
V OB
GND 2
0.1μF bypass capacitor required from V DD to GND
?2010 Fairchild Semiconductor Corporation
FOD8012 Rev. 1.0.5
www.fairchildsemi.com
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