Datasheet > DS1481S

DS1481S

更新时间： 2024-02-29 01:38:24

品牌	Logo	应用领域
达拉斯 - DALLAS		外围集成电路光电二极管
页数	文件大小	规格书
10页	74K
描述
1?Wire Bus Master with Overdrive

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技术参数
数据手册

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DS1481S 技术参数

是否无铅：	不含铅	是否Rohs认证：	符合
生命周期：	Obsolete	零件包装代码：	SOIC
包装说明：	SOP,	针数：	14
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.61
Is Samacsys：	N	JESD-30 代码：	R-PDSO-G14
JESD-609代码：	e3	湿度敏感等级：	1
端子数量：	14	最高工作温度：	40 °C
最低工作温度：		封装主体材料：	PLASTIC/EPOXY
封装代码：	SOP	封装形状：	RECTANGULAR
封装形式：	SMALL OUTLINE	峰值回流温度（摄氏度）：	260
认证状态：	Not Qualified	最大供电电压：	5.5 V
最小供电电压：	2.7 V	标称供电电压：	5 V
表面贴装：	YES	技术：	CMOS
温度等级：	COMMERCIAL	端子面层：	Matte Tin (Sn)
端子形式：	GULL WING	端子位置：	DUAL
处于峰值回流温度下的最长时间：	NOT SPECIFIED	uPs/uCs/外围集成电路类型：	MICROPROCESSOR CIRCUIT
Base Number Matches：	1

DS1481S 数据手册

DS1481

PRELIMINARY

DS1481

1–Wire Bus Master with Overdrive

FEATURES

PIN ASSIGNMENT

• Provides a synchronous interface to Dallas Semicon-

I/O

ductor 1–wire devices

ENI

O1/BSY1

O2/BSY2

D/CLK

RES

ENO

• Compatible with low power parallel ports

• Can be cascaded with other DS1481’s

GND

• Allowsprintspoolerandotherprocessestorunduring

1–wire I/O

• Provides high speed communcation with overdrive

capable devices

14–PIN SOIC (150 MIL)

• Space saving 14–pin (150 mil), SOIC package

PIN DESCRIPTION

ENI

–

Supply

Enable In

Data/Clock

Reset

Output 1/Busy 1

Output 2/Busy 2

Ground

Input 1

Input 2

1–wire I/O

Enable Out

No Connect

D/CLK

RES

O1/BSY1

O2/BSY2

GND

I/O

ENO

DESCRIPTION

The DS1481 is a dedicated 1–wire timing generator.

The device is normally used in conjunction with a paral-

lel port controller to provide the necessary interface to

the host processor. Busy signals allow the host proces-

sor to perform other tasks while 1–wire “time–slots” are

completed. The DS1481 also saves the state of D/CLK

and RES allowing print spoolers to operate without

affecting 1–wire communication.

printer port’s BUSY and SELECT OUT signals (pins 11

and 13 respectively). The next DS1481 connects its

O1/BSY1 and O2/BSY2 to the first device’s I1 and I2

respectively. ENO of the first device connects to ENI of

the second device. More DS1481’s can be stacked in a

similar manner. The last devices I1 and I2 connect to

BUSY and SELECT of the attached printer.

The DS1481’s 3–volt operation insures compatibility

with most low power parallel ports (i.e., portable com-

puters).

DS1481 based devices can be cascaded. The first

device’s O1/BSY1 and O2/BSY2 connect to the PC

021798 1/10

12 3 4 5 6 7...10

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