DS1821S+TR

更新时间： 2024-02-25 07:49:09

品牌	Logo	应用领域
达拉斯 - DALLAS		监控
页数	文件大小	规格书
18页	455K
描述
Programmable Digital Thermostat and Thermometer

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中文翻译

获取价格

技术参数
数据手册

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DS1821S+TR 技术参数

是否Rohs认证：	不符合	生命周期：	Obsolete
包装说明：	TO-220, 3 PIN	Reach Compliance Code：	unknown
风险等级：	5.78	Is Samacsys：	N
外壳：	PLASTIC	JESD-609代码：	e0
安装特点：	THROUGH HOLE MOUNT	位数：	8
端子数量：	3	最大工作电流：	1 mA
最高工作温度：	125 °C	最低工作温度：	-55 °C
输出接口类型：	1-WIRE INTERFACE	封装主体材料：	PLASTIC/EPOXY
封装等效代码：	SIP3,.1TB	封装形状/形式：	RECTANGULAR
电源：	3/5 V	传感器/换能器类型：	TEMPERATURE SENSOR,SWITCH/DIGITAL OUTPUT,SERIAL
子类别：	Other Sensors	最大供电电压：	5.5 V
最小供电电压：	2.7 V	表面贴装：	NO
端子面层：	Tin/Lead (Sn/Pb)	端接类型：	SOLDER
Base Number Matches：	1

DS1821S+TR 数据手册

DS1821

Figure 9 illustrates that the sum of T_INIT, T_RC, and T_SAMPLEmust be less than 15 μs for a read time slot.

Figure 10 shows that system timing margin is maximized by keeping T_INITand T_RCas short as possible

and by locating the master sample time during read time slots towards the end of the 15 μs period.

READ/WRITE TIME SLOT TIMING DIAGRAM Figure 8

LINE TYPE LEGEND (Figure 8, Figure 9 and Figure 10)

Bus master pulling low

DS1821 pulling low

Resistor pullup

START

OF SLOT

START

OF SLOT

MASTER WRITE “0” SLOT

60 μs < T_X“0” < 120

MASTER WRITE “1” SLOT

1 μs < T_REC< ∞

> 1 μs

V_DD

1-WIRE BUS

GND

DS1821 samples

TYP

DS1821 samples

MIN

15 μs

MAX

MIN

TYP

MAX

15 μs

30 μs

15 μs

30 μs

MASTER READ “0” SLOT

MASTER READ “1” SLOT

1 μs < T_REC< ∞

V_DD

1-WIRE BUS

GND

> 1 μs

Master samples

> 1 μs

15 μs

45 μs

15 μs

DETAILED MASTER READ 1 TIMING Figure 9

V_DD

VIH of Master

1-WIRE BUS

GND

Master samples

T_INT> 1 μs

T_RC

15 μs

RECOMMENDED MASTER READ 1 TIMING Figure 10

V_DD

VIH of Master

1-WIRE BUS

GND

Master samples

T_INT

= T_RC=

small small

15 μs

13 of 18

1...10 11 121314 15 16...18

中文翻译

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与DS1821S+TR相关器件

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