Data Transceiver. HT45B0003 Datasheet

HT45B0003 Transceiver. Datasheet pdf. Equivalent

HT45B0003 Datasheet
Recommendation HT45B0003 Datasheet
Part HT45B0003
Description Dual Line Power Line Data Transceiver
Feature HT45B0003; HT45B0003/HT45B0005 Dual Line Power Line Data Transceiver Features • Complete Data Transmission on.
Manufacture Holtek Semiconductor
Datasheet
Download HT45B0003 Datasheet





Holtek Semiconductor HT45B0003
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



Holtek Semiconductor HT45B0003
Block Diagram
VCC
5.6V
Zener
CN
R 10M
TRX
IS
HT45B0003/HT45B0005
LDO
3.3V/5.0V
VBG=1.5V
CEB
LVD
5.25V
VDD
CMP
+
EN1
TRX offline detector
EN1B
EN1
EN1B
VDD
RX
VDD
EN1B
RPU
1.5V
EN +
OPA
EN1B
TX
VSS
Current Modulator
Rev. 1.00
2 April 20, 2016



Holtek Semiconductor HT45B0003
HT45B0003/HT45B0005
Pin Assignment
VSS
TRX
CN
VCC
1
2
3
4
8 IS
7 TX
6 RX
5 VDD
HT45B0003/HT45B0005
8 SOP-A
Pin Description
Pin Name
VCC
CN
TRX
VSS
IS
TX
RX
VDD
I/O
I
B
O
O
O
Description
Input voltage
Comparator Negative Input
Transceiver signal detect/modulate
Ground pin – VSS
Source terminal of constant current NMOS driver
Input pin for constant current modulate
Comparator output, transmitter signal detect output
LDO output voltage
Absolute Maximum Ratings
Supply Voltage........................................ VSS-0.3~50V
Operating Temperature............................ -40°C~85°C
Storage Temperature.............................. -50°C~125°C
IOL Total.............................................................. 80mA
IOH Total............................................................ -80mA
Total Power Dissipation................................. 500mW
Note: These are stress ratings only. Stresses exceeding the range specified under “Absolute Maximum Ratings”
may cause substantial damage to the device. Functional operation of this device at other conditions beyond
those listed in the specification is not implied and prolonged exposure to extreme conditions may affect
device reliability.
D.C. Characteristics
Symbol
Parameter
VCC
ICC
IOFF
VOFF
VON
VT
Operating Voltage
Operating Current
Offline Current
TRX Offline Voltage
TRX Online Voltage
Threshold Voltage
IMC Modulate Current
VIL Input low voltage for TX pin
VIH Input high voltage for TX pin
Test Conditions
VDD Conditions
——
— VCC=42V, VDD No Load,
Vcc=42V, VDD No Load,
TRX=0V
——
——
——
— RS=100Ω
— RS=47Ω
5V
3.3V
5V —
3.3V
Ta=25°C
Min.
Typ.
Max. Unit
7 — 42
— 20 40
— 10 20
4
0
0
3.5
0.8VDD
VMARK-5.6
15
32
0.5
1.5
0.2VDD
5
VDD
V
μA
μA
V
V
V
mA
mA
V
V
V
V
Rev. 1.00
3 April 20, 2016





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