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DS2480B

更新时间： 2024-02-25 05:30:53

品牌	Logo	应用领域
达拉斯 - DALLAS		驱动器接口集成电路光电二极管
页数	文件大小	规格书
30页	410K
描述
Serial 1-Wire Line Driver with Load Sensor

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DS2480B 技术参数

是否Rohs认证：	不符合	生命周期：	Obsolete
零件包装代码：	SOIC	包装说明：	SOP, SOP8,.25
针数：	8	Reach Compliance Code：	not_compliant
风险等级：	5.87	JESD-30 代码：	R-PDSO-G8
JESD-609代码：	e0	湿度敏感等级：	1
端子数量：	8	最高工作温度：	85 °C
最低工作温度：	-40 °C	封装主体材料：	PLASTIC/EPOXY
封装代码：	SOP	封装等效代码：	SOP8,.25
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE
电源：	5 V	认证状态：	Not Qualified
子类别：	Serial IO/Communication Controllers	标称供电电压：	5 V
表面贴装：	YES	技术：	CMOS
温度等级：	INDUSTRIAL	端子面层：	Tin/Lead (Sn/Pb)
端子形式：	GULL WING	端子节距：	1.27 mm
端子位置：	DUAL

DS2480B 数据手册

DS2480B

As data enters the core of the DS2480B’s logic circuitry, it is analyzed to separate data and command

bytes and to calibrate the device’s timing generator. The timing generator controls all speed relations of

the communication interface and the 1–Wire bus as well as the wave forms on the 1–Wire bus.

Command bytes either affect the configuration setting or generate certain wave forms on the 1–Wire bus.

Data bytes are simply translated by the protocol converter into the appropriate 1–Wire activities. Each

data byte generates a return byte from the 1–Wire bus that is communicated back to the host through the

RXD pin as soon as the activity on the 1–Wire bus is completed.

The 1–Wire driver shapes the slopes of the 1–Wire wave forms, applies programming pulses or strong

pullup to 5 volts and reads the 1–Wire bus using a non–TTL threshold to maximize the noise margin for

best performance on large 1–Wire MicroLAN networks.

DS2480B BLOCK DIAGRAM Figure 1

DEVICE OPERATION

The DS2480B can be described as a complex state machine with two static and several dynamic states.

Two device–internal flags as well as functions assigned to certain bit positions in the command codes

determine the behavior of the chip, as shown in the state transition diagram (Figure 2). The DS2480B

requires and generates a communication protocol of 8 data bits per character, 1 stop bit and no parity. It is

permissible to use 2 stop bits on the TXD line. However, the DS2480B will only assert a single stop bit

on RXD.

When powering up, the DS2480B performs a master reset cycle and enters the Command Mode, which

is one of the two static states. The device now expects to receive one 1–Wire reset command on the TXD

line sent by the host at a data rate of 9600 bits per second (see section Communication Commands for

details). This command byte is required solely for calibration of the timing generator the DS2480B and is

not translated into any activity on the 1–Wire bus. After this first command byte the device is ready to

receive and execute any command as described later in this document.

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与DS2480B相关器件

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

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