DS2480

更新时间： 2024-11-08 22:50:51

品牌	Logo	应用领域
达拉斯 - DALLAS		驱动器
页数	文件大小	规格书
26页	189K
描述
Serial 1.Wire Line Driver

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中文翻译

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数据手册

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DS2480 数据手册

DS2480

Serial 1–Wire^TMLine Driver

FEATURES

• Universal, common–ground serial port to 1–Wire

line driver for MicroLAN applications

PIN ASSIGNMENT

GND

1–W

RXD

TXD

POL

• Works with all iButtons and MicroLAN–compatible

1–Wire slave devices

• Communicates at regular and Overdrive 1–Wire

speed and serial port data rates of 9600 (default),

19200, 57600 and 115200 bps

8–PIN SOIC

(150 MIL)

• Supports 12V EPROM programming and stiff 5V

PIN DESCRIPTION

pull–up for Crypto iButton, sensors and EEPROM

GND

1–W

Ground

1–Wire Input/Output

No Connection

• Self–calibrating time base with ±5% tolerance for

serial and 1–Wire communication

4.5 to 5.5 Volts

Optional EPROM

• Slew rate controlled 1–Wire pull–down and active

pull–up to accommodate long lines and reduce radi-

ation

Programming Voltage

RXD/TXD Polarity Select

Serial Data from UART

Serial Data to UART

POL

TXD

RXD

• User–selectable RXD/TXD polarity minimizes com-

ponent count when interfacing to 5V based RS232

systems or directly to UARTs

ORDERING INFORMATION

• Programmable 1–Wire timing and driver characteris-

tics accommodate a wide range of MicroLAN configu-

rations at regular speed

DS2480S

8–pin SOIC

• Smartprotocolcombinesdataandcontrolinformation

without requiring extra pins

• Compatibleto optical, IR and RF to RS232 converters

• Low cost 8–pin SOIC surface mount package

• Operates over 4.5V to 5.5V from –40°C to +85°C

DESCRIPTION

The DS2480 is a serial port to 1–Wire interface chip that

supports standard and Overdrive speeds. It connects

directlytoUARTsand5VRS232systems. Interfacingto

RS232C (± 12V levels) requires a passive clamping cir-

cuit and one 5V to ± 12V level translator. Internal timers

relieve the host of the burden of generating the time–

critical 1–Wire communication waveforms. In contrast

to the DS9097(E) where a full character must be sent by

the host for each 1–Wire time slot, the DS2480 can

translate each character into eight 1–Wire time slots

thereby increasing the data throughput significantly. In

addition, the DS2480 can be set to communicate at four

different data rates including 115.2 kbps, 57.6 kbps and

19.2 kbps with 9.6 kbps being the power–on default.

Command codes received from the host’s crystal con-

trolled UART serve as a reference to continuously cali-

bratetheon–chiptiminggenerator. The DS2480 uses a

unique protocol that merges data and control informa-

tion without requiring control pins. This approach main-

tains compatibility to off–the–shelf serial to wireless

converters allowing easy realization of 1–Wire media

jumpers. The various control functions of the DS2480

are optimized for MicroLAN 1–Wire networks and sup-

port the special needs of all current 1–Wire devices

includingthe Crypto iButton, EPROM–basedAdd–Only

Memories, EEPROM devices and 1–Wire Thermome-

ters.

042498 1/26

12 3 4 5 6 7...26

中文翻译

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与DS2480相关器件

型号	品牌	获取价格	描述	数据表
DS2480B	MAXIM	获取价格	Serial to 1-Wire Line Driver
DS2480B	DALLAS	获取价格	Serial 1-Wire Line Driver with Load Sensor
DS2480B	ADI	获取价格	串行、1-Wire线驱动器
DS2480B/T&R	MAXIM	获取价格	Line Driver, 1 Func, 1 Driver, PDSO8, 0.150 INCH, SOP-8
DS2480B+	MAXIM	获取价格	Serial to 1-Wire Line Driver
DS2480B+R	MAXIM	获取价格	Serial to 1-Wire Line Driver
DS2480B+T	MAXIM	获取价格	Serial to 1-Wire Line Driver
DS2480B+T&R	MAXIM	获取价格	Line Driver, 1 Func, 1 Driver, PDSO8, 0.150 INCH, ROHS COMPLIANT, SOP-8
DS2480BS	DALLAS	获取价格	Serial 1-Wire Line Driver with Load Sensor
DS2480S	DALLAS	获取价格	Serial 1.Wire Line Driver

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