HCPL-7721 Avago Technologies US Inc., HCPL-7721 Datasheet - Page 13

• Manufacturer Part Number: HCPL-7721
• Description: OPTOCOUPLER CMOS 25MBD 8-DIP
• Manufacturer: Avago Technologies US Inc.

Specifications of HCPL-7721

• Voltage - Isolation: 3750Vrms
• Number Of Channels: 1, Unidirectional
• Current - Output / Channel: 10mA
• Data Rate: 25MBd
• Propagation Delay High - Low @ If: 20ns
• Input Type: Logic
• Output Type: Push-Pull, Totem-Pole
• Mounting Type: Through Hole
• Package / Case: 8-DIP (0.300", 7.62mm)
• No. Of Channels: 1
• Isolation Voltage: 3.75kV
• Optocoupler Output Type: Gate Drive
• Input Current: 10µA
• Output Voltage: 5V
• Opto Case Style: DIP
• No. Of Pins: 8
• Propagation Delay Low-high: 40ns
• Common Mode Voltage Vcm: 1000V
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 516-1110-5

CONFIGURATION
TRANSCEIVER
Digital Field Bus Communication Networks
To date, despite its many draw backs, the 4 - 20 mA ana-
log current loop has been the most widely accepted
standard for implementing process control systems. In
today’s manufacturing environment, however, automat-
ed systems are expected to help manage the process,
not merely monitor it. With the advent of digital field bus
communication networks such as CC-Link, DeviceNet,
PROFIBUS, and Smart Distributed Systems (SDS), gone
are the days of constrained information. Controllers can
13
Figure 15. Typical field bus communication physical model.
INTERFACE
ISOLATION
OPTICAL
DEVICE
BUS
TRANSCEIVER
CONTROLLER
INTERFACE
ISOLATION
OPTICAL
BUS
TRANSCEIVER
INTERFACE
ISOLATION
STARTER
OPTICAL
MOTOR
BUS
FIELD BUS
TRANSCEIVER
CONTROLLER
INTERFACE
ISOLATION
OPTICAL
XXXXXX
YYY
MOTOR
BUS
TRANSCEIVER
INTERFACE
ISOLATION
OPTICAL
now receive multiple readings from field devices (sen-
sors, actuators, etc.) in addition to diagnostic informa-
tion.
The physical model for each of these digital field bus
communica tion networks is very similar as shown in
Figure 15. Each includes one or more buses, an interface
unit, optical isolation, transceiver, and sensing and/or ac-
tuating devices.
BUS
SENSOR