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ADM2481_V01中文资料PDF规格书

ADM2481_V01
厂商型号

ADM2481_V01

功能描述

Half-Duplex, iCoupler Isolated RS-485 Transceiver

文件大小

364.66 Kbytes

页面数量

17

生产厂商 Analog Devices
企业简称

AD亚德诺

中文名称

亚德诺半导体技术有限公司官网

原厂标识
数据手册

下载地址一下载地址二到原厂下载

更新时间

2024-6-15 22:30:00

ADM2481_V01规格书详情

GENERAL DESCRIPTION

The ADM2481 differential bus transceiver is an integrated, galvanically isolated component designed for bidirectional data communication on balanced, multipoint bus transmission lines. It complies with ANSI EIA/TIA-485-A and ISO 8482: 1987(E). Using iCoupler® technology from Analog Devices, Inc., the ADM2481 combines a 3-channel isolator, a three-state diffe-rential line driver, and a differential input receiver into a single package. The logic side of the device is powered with either a 5 V or 3 V supply, and the bus side uses a 5 V supply only.

The ADM2481 is slew-limited to reduce reflections with improp-erly terminated transmission lines. The controlled slew rate limits the data rate to 500 kbps. The input impedance of the device is 96 kΩ, allowing up to 256 transceivers on the bus. Its driver has an active-high enable feature. The driver differential outputs and receiver differential inputs are connected internally

to form a differential input/output (I/O) port. When the driver is disabled or when VDD1 or VDD2 = 0 V, this imposes minimal loading on the bus. An active-high receiver disable feature, which causes the receiver output to enter a high impedance state, is provided as well.

The receiver inputs have a true fail-safe feature that ensures a logic-high receiver output level when the inputs are open or shorted. This guarantees that the receiver outputs are in a known state before communication begins and at the point when communication ends.

Current limiting and thermal shutdown features protect against output short circuits and bus contention situations that might cause excessive power dissipation. The part is fully specified over the industrial temperature range of −40°C to +85°C and is available in a 16-lead, wide body SOIC package.

FEATURES

RS-485 transceiver with electrical data isolation

Complies with ANSI TIA/EIA-485-A and ISO 8482: 1987(E)

500 kbps data rate

Slew rate-limited driver outputs

Low power operation: 2.5 mA maximum

Suitable for 5 V or 3.3 V operations (VDD1)

High common-mode transient immunity: >25 kV/μs

True fail-safe receiver inputs

Chatter-free power-up/power-down protection

256 nodes on bus

Thermal shutdown protection

Safety and regulatory approvals

UL recognition: 2500 V rms for 1 minute per UL 1577

VDE certificates of conformity

DIN V VDE V 0884-10 (VDE V 0884-10): 2006-12

VIORM = 560 V peak

Operating temperature range: −40°C to +85°C

APPLICATIONS

Low power RS-485/RS-422 networks

Isolated interfaces

Building control networks

Multipoint data transmission systems

供应商 型号 品牌 批号 封装 库存 备注 价格
ADI
2020+
SOP
80000
只做自己库存,全新原装进口正品假一赔百,可开13%增
询价
AD
2016+
SOP16
6523
只做进口原装现货!假一赔十!
询价
ADI
22+
SOP
8000
原装正品支持实单
询价
ADI
21+
8080
只做原装,质量保证
询价
ADI
2021+
SOP16
30000
全新原装现货热卖
询价
AnalogDevices
AD专业分销
1200
AD代理旗下一级分销商,主营AD全系列产品
询价
ADI
19+
SOP
62116
原厂代理渠道,每一颗芯片都可追溯原厂;
询价
ANALOGDEV
20+
NA
90000
全新原装正品/库存充足
询价
6000
询价
AD
21+
SOP16
12588
原装正品,自己库存 假一罚十
询价