Datasheet > LMS1487EIM/NOPB

LMS1487EIM/NOPB

更新时间： 2024-09-18 09:03:47

品牌	Logo	应用领域
德州仪器 - TI		驱动光电二极管接口集成电路驱动器
页数	文件大小	规格书
13页	249K
描述
LINE TRANSCEIVER, PDSO8, SOIC-8

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技术参数
数据手册
替代型号

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LMS1487EIM/NOPB 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, SOP8,.25	针数：	8
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.21
差分输出：	YES	驱动器位数：	1
输入特性：	SCHMITT TRIGGER	接口集成电路类型：	LINE TRANSCEIVER
接口标准：	EIA-422-B; TIA-422-B; EIA-485-A; TIA-485-A; V.11; X.27	JESD-30 代码：	R-PDSO-G8
JESD-609代码：	e3	长度：	4.902 mm
湿度敏感等级：	1	功能数量：	1
端子数量：	8	最高工作温度：	85 °C
最低工作温度：	-40 °C	最小输出摆幅：	1.5 V
最大输出低电流：	0.004 A	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
峰值回流温度（摄氏度）：	260	电源：	5 V
认证状态：	Not Qualified	最大接收延迟：	200 ns
接收器位数：	1	座面最大高度：	1.753 mm
子类别：	Line Driver or Receivers	最大压摆率：	0.66 mA
最大供电电压：	5.25 V	最小供电电压：	4.75 V
标称供电电压：	5 V	表面贴装：	YES
温度等级：	INDUSTRIAL	端子面层：	Matte Tin (Sn)
端子形式：	GULL WING	端子节距：	1.27 mm
端子位置：	DUAL	处于峰值回流温度下的最长时间：	40
最大传输延迟：	80 ns	宽度：	3.899 mm
Base Number Matches：	1

LMS1487EIM/NOPB 数据手册

November 2003

LMS1487E

Low Power RS-485 / RS-422 Differential Bus Transceiver

General Description

Features

n Meet ANSI standard RS-485 and RS-422

n Data rate 2.5 Mbps

The LMS1487E is a low power differential bus/line trans-

ceiver designed for high speed bidirectional data communi-

cation on multipoint bus transmission lines. It is designed for

balanced transmission lines. It meets ANSI Standards TIA/

EIA RS422-B, TIA/EIA RS485-A and ITU recommendation

and V.11 and X.27. The driver outputs and receiver inputs

have 15kV ESD protection. The LMS1487E combines a

n Single supply voltage operation, 5V

n Wide input and output voltage range

n Thermal shutdown protection

n Short circuit protection

n Low quiescent current 660µA (max)

n Allows up to 128 transceivers on the bus

n Open circuit fail-safe for receiver

n Extended operating temperature range −40˚C to 85˚C

n Drop-in replacement to MAX1487E

n Available in 8-pin SOIC and 8-pin DIP packages

™

TRI-STATE differential line driver and differential input re-

ceiver, both of which operate from a single 5.0V power

supply. The driver and receiver have an active high and

active low, respectively, that can be externally connected to

function as a direction control. The driver outputs and re-

ceiver inputs are internally connected to form a differential

input/output (I/O) bus port that is designed to offer minimum

loading to bus whenever the driver is disabled or when V_CC

= 0V. These ports feature wide positive and negative com-

mon mode voltage ranges, making the device suitable for

multipoint applications in noisy environments. The

LMS1487E is available in 8-Pin SOIC and 8-pin DIP pack-

ages. It is a drop-in replacement to Maxim’s MAX1487E.

Applications

n Low power RS-485 systems

n Network hubs, bridges, and routers

n Point of sales equipment (ATM, barcode scanners,…)

n Local area networks (LAN)

n Integrated service digital network (ISDN)

n Industrial programmable logic controllers

n High speed parallel and serial applications

n Multipoint applications with noisy environment

Typical Application

20085601

A typical multipoint application is shown in the above figure. Terminating resistor, RT are typically required but only located at the two ends of the cable.

Pull-up and pull-down resistors maybe required at the end of the bus to provide fail-safe biasing. The biasing resistors provide a bias to the cable when all

drivers are in TRI-STATE, See National Application Note, AN-847 for further information.

DS200856

www.national.com

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LMS1487EIM/NOPB 替代型号

型号	品牌	替代类型	描述	数据表
LMS1487ECM/NOPB	TI	完全替代	LINE TRANSCEIVER, PDSO8, SOIC-8
LMS1487ECMX/NOPB	TI	功能相似	LINE TRANSCEIVER, PDSO8

与LMS1487EIM/NOPB相关器件

型号	品牌	获取价格	描述	数据表
LMS1487EIMX	NSC	获取价格	Low Power RS-485 / RS-422 Differential Bus Transceiver
LMS1487EIMX/NOPB	TI	获取价格	LINE TRANSCEIVER, PDSO8, SOIC-8
LMS1487EINA	NSC	获取价格	Low Power RS-485 / RS-422 Differential Bus Transceiver
LMS1487IM	NSC	获取价格	5V Low Power RS-485 / RS-422 Differential Bus Transceiver
LMS1487IM/NOPB	ROCHESTER	获取价格	LINE TRANSCEIVER, PDSO8, SOIC-8
LMS1487IMX	NSC	获取价格	5V Low Power RS-485 / RS-422 Differential Bus Transceiver
LMS1487INA	NSC	获取价格	5V Low Power RS-485 / RS-422 Differential Bus Transceiver
LMS1585	NSC	获取价格	5A and 3A Low Dropout Fast Response Regulators
LMS1585A	NSC	获取价格	5A and 3A Low Dropout Fast Response Regulators
LMS1585A	TI	获取价格	5A、13V 线性稳压器

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