HCPL-7720-000E Avago Technologies US Inc., HCPL-7720-000E Datasheet - Page 14

• Manufacturer Part Number: HCPL-7720-000E
• Description: OPTOCOUPLER CMOS 25MBD 8-DIP
• Manufacturer: Avago Technologies US Inc.

Specifications of HCPL-7720-000E

• Package / Case: 8-DIP (0.300", 7.62mm)
• 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
• Isolation Voltage: 3750 Vrms
• Maximum Continuous Output Current: 10 mA
• Maximum Fall Time: 0.008 us
• Maximum Forward Diode Current: 10 mA
• Output Device: Logic Gate Photo IC
• Configuration: 1 Channel
• Maximum Baud Rate: 25 MBd
• Maximum Power Dissipation: 150 mW
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• No. Of Channels: 1
• Optocoupler Output Type: Gate Drive
• Input Current: 10µA
• Output Voltage: 5V
• Opto Case Style: DIP
• No. Of Pins: 8
• Common Mode Ratio: 10000
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 516-1689-5

Optical Isolation for Field Bus Networks
To recognize the full benefits of these networks, each
recom mends providing galvanic isolation using Avago
optocouplers. Since network communication is bi-direc-
tional (involving receiving data from and transmitting
data onto the network), two Avago optocouplers are
needed. By providing galvanic isolation, data integrity is
retained via noise reduction and the elimination of false
signals. In addition, the network receives maximum pro-
tection from power system faults and ground loops.
Within an isolated node, such as the DeviceNet Node
shown in Figure 16, some of the node’s components are
referenced to a ground other than V- of the network.
14
DRAIN/SHIELD
Figure 16. Typical DeviceNet Node.
SIGNAL
POWER
NETWORK
SUPPLY
POWER
772x/072x
NODE/APP SPECIFIC
HCPL
TRANSCEIVER
uP/CAN
772x/072x
HCPL
5 V REG.
SUPPLY
LOCAL
NODE
AC LINE
V+ (SIGNAL)
V– (SIGNAL)
V+ (POWER)
V– (POWER)
GALVANIC
ISOLATION
BOUNDARY
These components could include such things as devices
with serial ports, parallel ports, RS232 and RS485 type
ports. As shown in Figure 16, power from the network is
used only for the transceiver and input (network) side of
the optocouplers.
Isolation of nodes connected to any of the three types of
digital field bus networks is best achieved by using the
HCPL-772X/072X optocouplers. For each network, the
HCPL-772X/072X satisify the critical propagation delay
and pulse width distortion require ments over the tem-
perature range of 0°C to +85°C, and power supply volt-
age range of 4.5 V to 5.5 V.