Datasheet > 驱动程序和接口 > 线路驱动器或接收器> DS2480B+T&R

DS2480B+T&R

更新时间： 2024-02-16 08:58:20

品牌	Logo	应用领域
美信 - MAXIM		线路驱动器或接收器驱动程序和接口接口集成电路光电二极管
页数	文件大小	规格书
32页	702K
描述
Line Driver, 1 Func, 1 Driver, PDSO8, 0.150 INCH, ROHS COMPLIANT, SOP-8

阅读下载

获取价格

技术参数
数据手册

如果您发现信息不准确，欢迎纠错

DS2480B+T&R 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+T&R 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 waveforms on the 1-Wire bus.

Command bytes either affect the configuration setting or generate certain waveforms 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 waveforms, applies programming pulses or strong

pullup to 5V and reads the 1-Wire bus using a non-TTL threshold to maximize the noise margin for best

performance on large 1-Wire networks.

Figure 1. DS2480B BLOCK DIAGRAM

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 only asserts 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

9600bps (see Communication Commands section for details). This command byte is required solely for calibration of the baud

rate 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. NOTE: Baud rate calibration is valid

only for the V_DDoperating voltage at which calibration is performed. Post-calibration changes in V_DDby more than 5% may

cause calibration error to exceed 5%. The DS2480B requires a 1-Wire reset command sent by the host at a data rate of

9600bps for calibration. Data rates of 115200bps or higher during calibration may put the DS2480B in an undefined state,

requiring a power-down reset to restore normal operation.

3 of 32

1 234 5 6 7...32

下载PDF

与DS2480B+T&R相关器件

型号	品牌	描述	获取价格	数据表
DS2480BS	DALLAS	Serial 1-Wire Line Driver with Load Sensor	获取价格
DS2480S	DALLAS	Serial 1.Wire Line Driver	获取价格
DS2482-100	DALLAS	Single-Channel 1-Wire Master	获取价格
DS2482-100	MAXIM	Single-Channel 1-Wire Master	获取价格
DS2482-100	ADI	单通道1-Wire主控制器	获取价格
DS2482-100_12	MAXIM	Single-Channel 1-Wire Master	获取价格

与DS2480B+T&R相关文章

PCF8574资料解读：主要参数分析、引脚说明
2024-05-21

3
AD637数据手册解读：主要特性、引脚及其功能解读、电气参数
2024-05-21

4
ADUM1201资料手册解读：参数分析、引脚说明、应用分析
2024-05-21

7
一文带你了解压敏电阻器在直流电路中的过压保护作用
2024-05-21

3

产品中心

服务支持

精选活动

关于我们

帮助中心

DS2480B+T&R

DS2480B+T&R 技术参数

DS2480B+T&R 数据手册

与DS2480B+T&R相关器件

与DS2480B+T&R相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

DS2480B+T&R

DS2480B+T&R 技术参数

DS2480B+T&R 数据手册

与DS2480B+T&R相关器件

与DS2480B+T&R相关文章

您还可以找

您在本页遇到什么问题？