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参数资料
| 型号： | HCPL-7721#500 |
| 厂商： | AGILENT TECHNOLOGIES INC |
| 元件分类： | 光电耦合器 |
| 英文描述： | 1 CHANNEL LOGIC OUTPUT OPTOCOUPLER, 25 Mbps |
| 封装： | 0.300 INCH, SURFACE MOUNT, DIP-8 |
| 文件页数： | 8/18页 |
| 文件大小： | 437K |
| 代理商： | HCPL-7721#500 |
16
Power Supplies and Bypassing
The recommended DeviceNet
application circuit is shown in
Figure 21. Since the HCPL-772X/
072X are fully compatible with
CMOS logic level signals, the
optocoupler is connected directly
Figure 21. Recommended DeviceNet application circuit.
Implementing PROFIBUS with the
HCPL-772X/072X
An acronym for Process Fieldbus,
PROFIBUS is essentially a twisted-
pair serial link very similar to RS-
485 capable of achieving high-speed
communication up to 12 MBd. As
shown in Figure 22, a PROFIBUS
Controller (PBC) establishes the
connection of a field automation
unit (control or central processing
station) or a field device to the
transmission medium. The PBC
consists of the line transceiver,
optical isolation, frame character
transmitter/receiver (UART), and
the FDL/APP processor with the
interface to the PROFIBUS user.
to the CAN transceiver. Two
bypass capacitors (with values
between 0.01 and 0.1
F) are
required and should be located as
close as possible to the input and
output power-supply pins of the
HCPL-772X/072X. For each
PROFIBUS USER:
CONTROL STATION
(CENTRAL PROCESSING)
OR FIELD DEVICE
USER INTERFACE
FDL/APP
PROCESSOR
TRANSCEIVER
OPTICAL ISOLATION
UART
PBC
MEDIUM
capacitor, the total lead length
between both ends of the
capacitor and the power supply
pins should not exceed 20 mm.
The bypass capacitors are
required because of the high-
speed digital nature of the signals
inside the optocoupler.
8
7
6
1
3
5
2
4
VDD1
VIN
GND1
VDD2
VO
GND2
HCPL-772x
HCPL-072x
4
3
2
5
7
1
6
8
GND2
VO
VDD2
GND1
VIN
VDD1
HCPL-772x
HCPL-072x
GND
ISO 5 V
0.01 F
RX0
0.01 F
TX0
0.01
F
0.01
F
TxD
CANH
REF
RXD
82C250
VCC
GND
Rs
CANL
C4
0.01 F
+
VREF
LINEAR OR
SWITCHING
REGULATOR
5 V
++
R1
1 M
C1
0.01 F
500 V
D1
30 V
5 V+
4 CAN+
3 SHIELD
2 CAN–
1 V–
GALVANIC
ISOLATION
BOUNDARY
Figure 22. PROFIBUS Controller (PBC).
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相关代理商/技术参数 |
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| HCPL-7721-500E | 功能描述:高速光耦合器 1Ch 10mA 600mW RoHS:否 制造商:Avago Technologies 电流传递比: 最大波特率: 最大正向二极管电压:1.75 V 最大反向二极管电压:5 V 最大功率耗散:40 mW 最大工作温度:+125 C 最小工作温度:- 40 C 封装 / 箱体:SOIC-5 封装:Tube |
| HCPL-7721-520 | 功能描述:高速光耦合器 1Ch 10mA 600mW RoHS:否 制造商:Avago Technologies 电流传递比: 最大波特率: 最大正向二极管电压:1.75 V 最大反向二极管电压:5 V 最大功率耗散:40 mW 最大工作温度:+125 C 最小工作温度:- 40 C 封装 / 箱体:SOIC-5 封装:Tube |
| HCPL-7721-520E | 功能描述:高速光耦合器 1Ch 10mA 600mW RoHS:否 制造商:Avago Technologies 电流传递比: 最大波特率: 最大正向二极管电压:1.75 V 最大反向二极管电压:5 V 最大功率耗散:40 mW 最大工作温度:+125 C 最小工作温度:- 40 C 封装 / 箱体:SOIC-5 封装:Tube |
| HCPL-7721-560E | 功能描述:高速光耦合器 1Ch 10mA 600mW RoHS:否 制造商:Avago Technologies 电流传递比: 最大波特率: 最大正向二极管电压:1.75 V 最大反向二极管电压:5 V 最大功率耗散:40 mW 最大工作温度:+125 C 最小工作温度:- 40 C 封装 / 箱体:SOIC-5 封装:Tube |
| HCPL-7723 | 功能描述:高速光耦合器 50Mbd 2ns PWD RoHS:否 制造商:Avago Technologies 电流传递比: 最大波特率: 最大正向二极管电压:1.75 V 最大反向二极管电压:5 V 最大功率耗散:40 mW 最大工作温度:+125 C 最小工作温度:- 40 C 封装 / 箱体:SOIC-5 封装:Tube |
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