HCPL-8100 Avago Technologies US Inc., HCPL-8100 Datasheet - Page 10
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HCPL-8100
Manufacturer Part Number
HCPL-8100
Description
OPTOCOUPLER LINE DRIVER 8DIP
Manufacturer
Avago Technologies US Inc.
Datasheet
1.HCPL-0810-500.pdf
(10 pages)
Specifications of HCPL-8100
Function
Current Source
Voltage - Input
4.75 ~ 5.25 V
Current - Output
1A
Operating Temperature
-40°C ~ 85°C
Mounting Type
Through Hole
Package / Case
8-DIP (0.300", 7.62mm)
Maximum Operating Temperature
+ 85 C
Mounting Style
Through Hole
Minimum Operating Temperature
- 40 C
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Accuracy
-
Sensing Method
-
Lead Free Status / Rohs Status
Details
Although the series coupling impedance is minimized to
reduce insertion loss, it has to be sufficiently large to limit
the peak current to the desired level in the worst expected
powerline load condition. The peak output current is ef-
fectively limited by the total series coupling resistance,
which is made up of the series resistance of L, the series
resistance of the fuse and any other resistive element
connected in the coupling network.
To reduce power dissipation when not operating in
transmit mode the line driver stage is shut down to a low
power high impedance state by pulling the Tx-en input
(pin ) to logic low state.
External Transient Voltage Protection
To protect the HCPL-8100 and HCPL-0810 from high
voltage transients caused by power surges and discon-
necting/connecting the modem, it is necessary to add an
external 6.8 V bi-directional transient voltage protector (as
component D1 shown in Figure 17).
Additional protection from powerline voltage surges can
be achieved by adding an appropriate Metal Oxide Varistor
(MOV) across the powerline terminals after the fuse.
Table 2. Status pin logic
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Avago, Avago Technologies, and the A logo are trademarks of Avago Technologies, Limited in the United States and other countries.
Data subject to change. Copyright © 2006 Avago Technologies Limited. All rights reserved. Obsoletes 5989-1316EN
AV02-0414EN - June 7, 2007
Status output
Normal
Low
V
High
CC
< 4 V
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Internal Protection and Sensing
The HCPL-8100 and HCPL-0810 include several sensing
and protection functions to ensure robust operation under
wide ranging environmental conditions.
The first feature is the V
In the event of V
output status pin is switched to a logic high state.
The next feature is the over-temperature shutdown. This
particular feature protects the line driver stage from over-
temperature stress. Should the IC junction temperature
reach a level above 150°C, the line driver circuit will be shut
down and the output of Status (pin 1) is pulled to the logic
high state simultaneously.
The final feature is load detection function. The powerline
impedance is quite unpredictable and varies not just
at different connection points but is also time variant.
The HCPL-8100 and HCPL-0810 include a current sense
feature, which may be utilized to feedback information on
the instantaneous powerline load condition. Should the
peak current reach a level greater than 0.5 A
of status pin is pulled to a logic high state for the entire
period the peak current exceeds -0.5 A as shown in Figure
1. Using the period of the pulse together with the known
coupling impedance, the actual powerline load can be cal-
culated. Table shows the logic output of the Status pin.
Over-Temperature
High
CC
dropping to a voltage less than 4 V, the
CC
Under Voltage Detection (UVD).
I
High (pulsed)
Tx-out
<
-
0.25 A
PP
, the output