參數(shù)資料
型號(hào)： FOD8012R2
廠商： FAIRCHILD SEMICONDUCTOR CORP
元件分類： 模擬信號(hào)調(diào)理
英文描述： SPECIALTY ANALOG CIRCUIT, PDSO8
封裝： LEAD FREE, SOP-8
文件頁(yè)數(shù)： 1/12頁(yè)
文件大?。?/td> 207K
代理商： FOD8012R2
FOD8012
—
High
CMR,
Bi-Directional,
Logic
Gate
Optocoupler
2010 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FOD8012 Rev. 1.0.5
November 2010
FOD8012
High CMR, Bi-Directional, Logic Gate Optocoupler
Features
■ Full Duplex, Bi-Directional
■ 20kV/s Minimum Common Mode Rejection
■ High Speed:
– 15Mbit/sec Data Rate (NRZ)
– 60ns max. Propagation Delay
– 15ns max. Pulse Width Distortion
– 30ns max. Propagation Delay Skew
■ 3.3V and 5V CMOS Compatibility
■ Extended industrial temperate range, -40 to +110C
temperature range
■ Safety and regulatory approvals
– UL1577, 3750 VACRMS for 1 min.
– DIN EN/IEC60747-5-2 (approval pending)
Applications
■ Industrial eldbus communications
– DeviceNet, CAN, RS485, RS232
■ Microprocessor System Interface
– SPI, I2C
■ Programmable Logic Control
■ Isolated Data Acquisition System
■ Voltage Level Translator
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 patented copla-
nar packaging technology, Optoplanar, and optimized
IC design to achieve minimum 20kV/s 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/
Functional Schematic
1
2
3
45
0.1F bypass capacitor required from VDD to GND
6
7
8
VDD1
VOA
VDD2
VINA
VINB
GND1
VOB
GND2
Truth Table
VIN
LED
VO
High
OFF
High
Low
ON
Low
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