HCPL-7721-560 Avago Technologies US Inc., HCPL-7721-560 Datasheet - Page 13

• Manufacturer Part Number: HCPL-7721-560
• Manufacturer: Avago Technologies US Inc.

Specifications of HCPL-7721-560

• Number Of Elements: 1
• Output Type: Push-Pull
• Output Current: 10mA
• Isolation Voltage: 3750Vrms
• Package Type: PDIP SMD
• Operating Temp Range: -40C to 85C
• Power Dissipation: 150mW
• Propagation Delay Time: 40ns
• Pin Count: 8
• Mounting: Surface Mount
• Operating Temperature Classification: Industrial
• Lead Free Status / Rohs Status: Not Compliant

CONFIGURATION
TRANSCEIVER
Digital Field Bus Communication Networks
To date, despite its many drawbacks, 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
HCPL-0710 fig 16
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
communication 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