HCPL-7721 Avago Technologies US Inc., HCPL-7721 Datasheet - Page 15

• 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

Figure 17. Recommended CC-Link application circuit.
Implementing CC-Link with the HCPL-772X/072X
CC-Link (Control and Communication Link) is developed
to merge control and information in the low-level net-
work (field network) by PCs, thereby making the mul-
tivendor environment a reality. It has data control and
message-exchange function, as well as bit control func-
tion, and operates at the speed up to 10 Mbps.
15
SLD
DA
DB
DG
FG
FIL
SN75ALS181NS
V
V
A
B
Y
Z
CC
CC
GND
GND
RE
DE
R
D
10 K
Power Supplies and Bypassing
The recommended CC-Link circuit is shown in Figure
17. Since the HCPL-772X/072X are fully compatible with
CMOS logic level signals, the optocoupler is connected
directly to the transceiver. Two bypass capacitors (with
values between 0.01 μF and 0.1 μF) 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 capacitor, the total lead length between both ends
of capacitor and the power supply pins should not ex-
ceed
cause of the high speed digital nature of the signals in-
side the optocoupler.
10 K
20 mm. The bypass capacitors are required be-
HC14
HC14
1 K
1 K
0.1 μ
0.1 μ
0.1 μ
0.1 μ
V
GND
(5 V)
DD2
2
HCPL-7720#500
HCPL-7720#500
HCPL-2611#560
HCPL-2611#560
V
V
GND
V
V
GND
V
V
V
GND
V
V
V
GND
DD1
I
DD2
O
OE
DD
O
OE
DD
O
1
V
V
GND
GND
DD2
DD1
NC
NC
NC
NC
V
V
O
+
–
+
–
I
V
(5 V)
390
390
DD1
GND
0.1 μ
0.1 μ
HC14
HC14
10 K
1
SD
MPU
BOARD
OUTPUT
SDGATEON
RD1