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PDF HT71D02 Data sheet ( Hoja de datos )
| Número de pieza | HT71D02 | |
| Descripción | (HT71D02 / HT71D04) Power Line Data Transceiver | |
| Fabricantes | Holtek Semiconductor | |
| Logotipo |  |
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DataSheet.in
HT71D02/HT71D04
Power Line Data Transceiver
Features
· Complete Data Transmission on Power Line functions
· High Maximum Input Voltage: 30V
· Integrated Low Dropout Voltage Regulator
· Integrated Voltage Detector for Power Supply Monitoring
· Open drain NMOS drivers for flexible interfacing
· Power and Reset Protection Features
· 8-pin SOP package type
· Minimal external component requirements
General Description
In systems where a master controller controls a number of individual interconnected subsystems such
as found in smoke detector systems, water metering systems, solar energy system etc., the cost of the
lengthy interconnecting cabling can be a major factor. By sending data along the power supply lines,
the interconnecting cables can be reduced to a simple two line type, thus greatly reducing both cable
and installation costs.
With a the addition of a few external components, this power line data transceiver device contains all
the internal components required to provide users with a system for power line data transmission and
reception. Data is modulated onto the power line by the simple reduction of the power line voltage for
a specific period of time. Power supply voltage changes can be initiated by the master controller for
data reception or initiated by the HT71D0x devices for data transmission. An internal voltage
regulator within the device ensures that a constant voltage power supply is provided to the
interconnected subsystem units while an internal voltage detector monitors the power line voltage
level.
Selection Guide
Part No.
HT71D02
HT71D04
LDO
Voltage
3.3V
5.0V
Detect
Voltage
9.0V
9.0V
Package
8SOP
8SOP
Rev. 1.00
1 June 30, 2010
1 page  
DataSheet.in
HT71D02/HT71D04
Power Line Data Transceiver
Functional Description
These devices provide a way to transmit and receive data on the common power lines of an
interconnected array of microcontroller based subsystems. By having one of these devices inside each
subsystem, the shared power and data cabling can be reduced to a simple two line type, offering major
installation cost reductions.
M a s te r
C o n tr o lle r
P o s itiv e P o w e r S y p p ly L in e
G r o u n d L in e
H T71D 0x
H T71D 0x
H T71D 0x
M CU M CU
M CU
S u b s y s te m
#1
S u b s y s te m
#2
System Block Diagram
S u b s y s te m
#n
Shared Power Line
All microcontroller based subsystems are connected together via the same two line power connection.
The ground line is hardwired to each subsystem while the positive power line is connected to the VIN
pin on each of the HT71D0x devices. An internal Low Dropout Voltage Regulator within the
HT71D0x devices, converts this input power supply voltage to a fixed voltage level which is supplied
to the subsystem microcontroller and other circuit components. In this way when the power line
voltage is changed due to the transmission or reception of data the subsystem circuits still continue to
receive a regulated power supply.
Rev. 1.00
5 June 30, 2010
5 Page 
DataSheet.in
HT71D02/HT71D04
Power Line Data Transceiver
Holtek Semiconductor Inc. (Headquarters)
No.3, Creation Rd. II, Science Park, Hsinchu, Taiwan
Tel: 886-3-563-1999
Fax: 886-3-563-1189
http://www.holtek.com.tw
Holtek Semiconductor Inc. (Taipei Sales Office)
4F-2, No. 3-2, YuanQu St., Nankang Software Park, Taipei 115, Taiwan
Tel: 886-2-2655-7070
Fax: 886-2-2655-7373
Fax: 886-2-2655-7383 (International sales hotline)
Holtek Semiconductor Inc. (Shenzhen Sales Office)
5F, Unit A, Productivity Building, No.5 Gaoxin M 2nd Road, Nanshan District, Shenzhen, China 518057
Tel: 86-755-8616-9908, 86-755-8616-9308
Fax: 86-755-8616-9722
Holtek Semiconductor (USA), Inc. (North America Sales Office)
46729 Fremont Blvd., Fremont, CA 94538, USA
Tel: 1-510-252-9880
Fax: 1-510-252-9885
http://www.holtek.com
Copyright Ó 2010 by HOLTEK SEMICONDUCTOR INC.
The information appearing in this Data Sheet is believed to be accurate at the time of publication. However, Holtek as-
sumes no responsibility arising from the use of the specifications described. The applications mentioned herein are used
solely for the purpose of illustration and Holtek makes no warranty or representation that such applications will be suitable
without further modification, nor recommends the use of its products for application that may present a risk to human life
due to malfunction or otherwise. Holtek¢s products are not authorized for use as critical components in life support devices
or systems. Holtek reserves the right to alter its products without prior notification. For the most up-to-date information,
please visit our web site at http://www.holtek.com.tw.
Rev. 1.00
11 June 30, 2010
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet HT71D02.PDF ] | |
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