HT45B0003 Datasheet, PDF (1/10 Pages) Holtek Semiconductor Inc – Dual Line Power Line Data Transceiver

HT45B0003/HT45B0005
Dual Line Power Line Data Transceiver
Features
• Complete Data Transmission on Power Line
functions
• High Maximum Input Voltage: 42V
• Integrated Low Dropout Voltage Regulator
• Integrated Voltage Detector for Power Supply
Monitoring
• Integrated Comparator
• Open drain NMOS driver 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 the addition of a few external components, this
power line data transceiver devices contain 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 HT45B000x devices for data
transmission. An internal voltage regulator within the
devices 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. An internal comparator is used to
translate the differential signal into a logic signal for
the MCU.
Selection Guide
Part No.
HT45B0003
HT45B0005
LDO Voltage
3.3V
5.0V
Detect Voltage
5.25V
5.25V
Package
8SOP
8SOP
Rev. 1.00
1
April 20, 2016