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LTC1387IG#TR

更新时间： 2024-02-27 03:49:22
品牌 Logo 应用领域
凌特 - Linear /
页数 文件大小 规格书
12页 171K
描述
LTC1387 - Single 5V RS232/RS485 Multiprotocol Transceiver; Package: SSOP; Pins: 20; Temperature Range: -40°C to 85°C

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中文翻译

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LTC1387IG#TR 技术参数

是否无铅： 含铅是否Rohs认证： 符合
生命周期：Active包装说明：SOP,
针数：20Reach Compliance Code：compliant
风险等级：5.6差分输出：YES
驱动器位数：1输入特性：DIFFERENTIAL SCHMITT TRIGGER
接口集成电路类型：LINE TRANSCEIVER接口标准：EIA-232; EIA-422; EIA-485; EIA-562
JESD-30 代码：R-PDSO-G20JESD-609代码：e3
长度：12.8 mm湿度敏感等级：1
功能数量：1端子数量：20
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
最大接收延迟：6000 ns接收器位数：1
座面最大高度：2.65 mm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技术：CMOS
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：30
最大传输延迟：4000 ns宽度：7.5 mm
Base Number Matches：1

LTC1387IG#TR 数据手册

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LTC1387  
Sing le 5V RS232/ RS485  
Multip ro to c o l Tra nsc e ive r  
U
DESCRIPTIO  
EATURE  
S
F
The LTC®1387 is a low power reconfigurable CMOS bidi-  
rectional transceiver. It can be configured as an RS485  
differential port or as two RS232 single-ended ports. An  
onboard charge pump uses four 0.1µF capacitors to  
generate boosted positive and negative supplies, allowing  
the RS232 drivers to meet ±5V output swing require-  
ments with only a single 5V supply. A shutdown mode  
reduces the ICC supply current to 5µA.  
■
■
■
Two RS232 Transceivers or One RS485 Transceiver  
Operates from a Single 5V Supply  
Guaranteed Receiver Output with Inputs  
Floating or Shorted to Ground  
Logic Selectable Fast/Slow RS485 Driver Slew Rate  
Low Supply Current: 7mA Typical  
5µA Supply Current in Shutdown  
Self-Testing Capability in Loopback Mode  
Separate Driver and Receiver Enable Controls  
Driver Maintains High Impedance in Three-State,  
Shutdown or with Power Off  
■
■
■
■
■
■
The RS232 transceivers are in full compliance with RS232  
specification. The RS485 transceiver is in full compliance  
with RS485 and RS422 specifications. The RS485 re-  
ceiver assumes a known output state when the inputs are  
floating or shorted to ground. All interface drivers feature  
short-circuit and thermal shutdown protection. An enable  
pin allows RS485 driver outputs to be forced into high  
impedancewhichis maintainedevenwhentheoutputs are  
forced beyond supply rails or the power is off. A loop back  
modeallows thedriveroutputs tobeconnectedbacktothe  
receiver inputs for diagnostic self-test.  
■
Receiver Inputs Can Withstand ±25V  
U
APPLICATIONS  
■
Point-of-Sale Terminals  
Software Selectable Multiprotocol Interface Ports  
Low Power RS485/RS422/RS232/EIA562 Interface  
Cable Repeaters  
■
■
■
■
Level Translators  
The LTC1387 is available in 20-pin plastic SSOP and SW  
packages.  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
U
O
TYPICAL APPLICATI  
19  
20  
1
2
2
1
20  
19  
3
3
LTC1387  
LTC1387  
18  
V
5V  
CC2  
18  
V
CC1  
5V  
4
4
5
17  
15  
17  
RS485 INTERFACE  
5
RECOUT  
DR IN  
RECOUT  
120Ω  
120Ω  
4000-FT 24-GAUGE TWISTED PAIR  
6
7
6
7
15  
14  
DR IN  
SLEW  
14  
9
SLEW  
8
9
12  
11  
8
DR ENABLE  
5V  
5V  
DR ENABLE  
5V  
5V  
5V  
13  
12  
11  
13  
5V  
10  
10  
ALL CAPACITORS: 0.1µF MONOLITHIC CERAMIC TYPE  
LTC1387 • TA01  
1
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中文翻译

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