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3.3V供电、±15kV ESD保护、12Mbps、限摆率、真RS-485/RS-422收发器

产品详情

主要特征

Parametric specs for RS-485/RS-422 Line Driver/Receivers
# Tx/Rx 1Tx + 1Rx
Duplex Half
VSUPPLY (V) 3.3
Data Rate (kbps) (min) 12000
ICC (mA) (typ) 1
ESD Protect. (±kV) 15
Tx EN Yes
Rx EN Yes
ICC (Shutdn.) (µA) (typ) 0.002
Oper. Temp. (°C) -40 to +85
0 to +70
Package/Pins PDIP/8
SOIC (N)/8
Budgetary
Price (See Notes)
2.59
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参量

Parametric specs for RS-485/RS-422 Line Driver/Receivers
# Tx/Rx 1Tx + 1Rx
Duplex Half
VSUPPLY (V) 3.3
Data Rate (kbps) (min) 12000
ICC (mA) (typ) 1
ESD Protect. (±kV) 15
Tx EN Yes
Rx EN Yes
ICC (Shutdn.) (µA) (typ) 0.002
Oper. Temp. (°C) -40 to +85
0 to +70
Package/Pins PDIP/8
SOIC (N)/8
Budgetary
Price (See Notes)
2.59

主要特征

  • ESD Protection for RS-485 I/O Pins
    • ±15kV-Human Body Model
    • ±8kV-IEC 1000-4-2, Contact Discharge
    • ±15kV-IEC 1000-4-2, Air-Gap Discharge
  • Operate from a Single +3.3V Supply-No Charge Pump Required
  • Interoperable with +5V Logic
  • Guaranteed 12Mbps Data Rate (MAX3485E/MAX3490E/MAX3491E)
  • Slew-Rate Limited for Errorless Data Transmission (MAX3483E/MAX3488E)
  • 2nA Low-Current Shutdown Mode (MAX3483E/MAX3485E/MAX3486E/MAX3491E)
  • -7V to +12V Common-Mode Input Voltage Range
  • Full-Duplex and Half-Duplex Versions Available
  • Industry-Standard 75176 Pinout (MAX3483E/MAX3485E/MAX3486E)
  • Current-Limiting and Thermal Shutdown for Driver Overload Protection

应用/用途

  • 工业控制局域网
  • 集成服务数字网络
  • 分组交换技术
  • 电信
  • 用于EMI敏感应用的收发器

描述

Devices in the MAX3483E family (MAX3483E/MAX3485E/MAX3486E/MAX3488E/MAX3490E/MAX3491E) are ±15kV ESD-protected, +3.3V, low-power transceivers for RS-485 and RS-422 communications. Each device contains one driver and one receiver. The MAX3483E and MAX3488E feature slew-rate-limited drivers that minimize EMI and reduce reflections caused by improperly terminated cables, allowing error-free data transmission at data rates up to 250kbps. The partially slew-rate-limited MAX3486E transmits up to 2.5Mbps. The MAX3485E, MAX3490E, and MAX3491E transmit at up to 12Mbps.

All devices feature enhanced electrostatic discharge (ESD) protection. All transmitter outputs and receiver inputs are protected to ±15kV using IEC 1000-4-2 Air-Gap Discharge, ±8kV using IEC 1000-4-2 Contact Discharge, and ±15kV using the Human Body Model.

Drivers are short-circuit current limited and are protected against excessive power dissipation by thermal shutdown circuitry that places the driver outputs into a high-impedance state. The receiver input has a fail-safe feature that guarantees a logic-high output if both inputs are open circuit.

The MAX3488E, MAX3490E, and MAX3491E feature full-duplex communication, while the MAX3483E, MAX3485E, and MAX3486E are designed for half-duplex communication.

简化框图

MAX3483E、MAX3485E、MAX3486E、MAX3488E、MAX3490E、MAX3491E:引脚配置和典型工作电路 MAX3483E、MAX3485E、MAX3486E、MAX3488E、MAX3490E、MAX3491E:引脚配置和典型工作电路 Zoom icon

Technical Docs

支持和培训

在Maxim的知识库中搜索技术问题的答案

过滤搜索

Maxim的专业工程师团队也会为您解答相应的技术问题,请访问Maxim的 支持中心

采样:
选择上方“样片”按钮将重定向至第三方ADI样片网站。登录后,所选部件将转移到您在此网站上的购物车。如果您之前从未使用过此网站,请创建一个新帐户。有关此样片网站的任何问题,请联系SampleSupport@analog.com