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HT672B, HT6740, HT6751A

Table of contents:
Info of HT672B
Info of HT6740
Info of HT6751A

HT672B, HT6740, HT6751A Selling Leads, Datasheet

MFG:HOLTEK Package Cooled:CRC-8 D/C:08+

HT672B, HT6740, HT6751A Datasheet download

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Part Number: HT672B

MFG: HOLTEK

Package Cooled: CRC-8

D/C: 08+

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HT672B General Description

The HT672B is a RF transponder IC operating with 13.56MHz RF carrier, which provides a low cost batteryless transponder solution with the addition of merely an external inductor. The inductor and internal capacitor form a LC tank which inducing voltage from the radiated 13.56MHz carrier signal generated from the reader antenna. HT672B has a built-in low power RC oscillator which is activated if the induced carrier field strength is high enough to supply the operating current and the response signal(pre-programmed in the OTP memory) is serial transmitted out. The response data is transmitted using PWM/ASK modulation. Modulation of 13.56MHz is accomplished by damping the LC tank with a fixed baud rate.

The transmission information is stored in 40 bits. One Time Programmable memory (OTP) (up to 32 bits reserved for customer) in the chip, with a 8-bits checksum code. The effective detection range for a small sized antenna is 2cm~10cm which is dependent on antenna format & reader design. The larger the antenna loop used the longer the detection range. It is advisable to use larger antenna to attain a 15cm detection range. Implementing Holteks advanced OTP and low power technology, HT672B offers a very cost effective solution for RF contactless detection system. A code area of 32-bits(max.) wide is provided so customers can program the device using the specified programmer supplied by Holtek. The pre-programmed Ics are also available upon customers request.

HT672B Maximum Ratings

Supply Voltage (VDD) ............................................5.5V
Storage Temperature ...........................-50 to 125
Supply Voltage (VPA) ..........................................12.5V
Operating Temperature ..............................0 to 70
Input Voltage .............................V_SS-0.3V to V_DD+0.3V
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.

HT672B Features

•Wide range operating voltage
•Batteryless RF transponder
•Data transmission in read-only operation
•6-bits sync + 32-bits data + 8-bits CRC
•OTP data memory
•13.56MHz carrier frequency
•Output data baud rate: 10kbps at V_DD=3V
•PWM/ASK modulation
•Built-in voltage limiter
•8-pin DIP package

HT672B Typical Application

•Interactive leisure products
•Security system
•Access control
•Anti-counterfeit devices
•Material management
•Animal management
•Personnel working time record
•Car park monitoring system

HT672B Connection Diagram

HT6740 General Description

The HT6740 is an RF transponder IC with 13.56MHz RF carrier, which provides a low cost batteryless transponder solution when combined with an external inductor.

The inductor and internal capacitor form an LC tank which induce voltage from the radiated 13.56MHz carrier signal generated from the reader antenna.

HT6740 has a built-in low power RC oscillator which is activated if the induced carrier field strength is high enough to supply the operating current and the response signal (pre-programmed in the OTP memory) is serially transmitted out. The response data is transmitted using PWM/ASK modulation. Modulation of 13.56MHz is accomplished by damping the LC tank with a fixed baud rate.
T
he transmission information is stored in a 17 bits one time programmable memory OTP, with a 6-bit check sum (up to 11 bits reserved for customer). The effective detection range for a small sized antenna is 2cm~10cm which is dependent on antenna format & reader design.
The larger the antenna loop used the longer the detection range. It is advisable to use larger antenna to attain a 15 cm detection range.

Implementing Holteks advanced OTP and low power technology, HT6740 offers a very cost effective solution for RF contactless detection system.

A code area of 11 bits (max.) wide is provided so customers can program the device using the specified programmer supplied by Holtek. The pre-programmed ICs are also available upon customer's request.

The HT6740 has a built-in anti-collision function. Customers can choose with anti-collision or with non anti-collision function in the program software tool supplied by Holtek.

HT6740 Maximum Ratings

Supply Voltage (V_DD) ...............................................6V
Operating Temperature ..............................0 to 70
Input Voltage .............................V_SS-0.3V to V_DD+0.3V
Storage Temperature ...........................-50 to 125
Supply Voltage (V_PA) ..........................................12.5V

HT6740 Features

Very low operating current (15A at V_DD=2V)
Wide range operating voltage
Batteryless RF transponder
Data transmission in read-only operation
Max. of 6 bits customer programmable data
6 bits checksum for error rejection
OTP data memory
13.56MHz carrier frequency
Output data baud rate: 10kbps (Typ.) at V_DD=3V
PWM/ASK modulation
Built-in voltage limiter
Non anti-collision function (Default)
8-pin DIP package available for e

HT6740 Typical Application

Interactive leisure products
Security system
Access control
Anti-counterfeit devices
Material management
Animal management
Personnel working time record
Car park monitoring system

HT6740 Connection Diagram

HT6751A General Description

The IC can control H Bridge circuit for motor driving. It provides Spark Killer Diode/Thermal Shutdown function/Forward function/Reverse function/Brake function/Stop function for motor driver application. It is designed by LSI high technology with low power process.

HT6751A Maximum Ratings

Supply Voltage......................V_DD-0.3V to 7.0V
Voltage to Input Terminal .....-0.3V to V_DD+0.3
Storage Temperature................-40 to 125
Operating Temperature ..............-20 to 85
Junction Temperature ........................... 150

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.

HT6751A Features

` Operating voltage: 2.0V~6.0V
` Operating current < 2mA at 3.0V, No load
` Standby current IVDD< 2A, no load
` Separate logic power supply and motor power supply
` Built-in thermal shutdown circuit
` Built-in H bridge control circuit
` Built-in spark killer diode
` Provides strong ESD (min. of 4KV) per pin
` 8-pin SOP package

HT6751A Typical Application

· Camera motor driver
· Toy motor driver

HT6751A Connection Diagram

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