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±15kV ESD保护、失效保护、高速(10Mbps)、限摆率RS-485/RS-422收发器

产品详情

主要特征

应用/用途

Parametric specs for RS-485/RS-422 Line Driver/Receivers
# Tx/Rx 1Tx + 1Rx
Duplex Full
VSUPPLY (V) 5
Data Rate (kbps) (min) 115
ICC (mA) (typ) 0.375
Tx EN Yes
Rx EN Yes
ICC (Shutdn.) (µA) (typ) 0.001
Oper. Temp. (°C) -40 to +85
0 to +70
Package/Pins PDIP/14
SOIC (N)/14
Budgetary
Price (See Notes)
1.84
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参量

Parametric specs for RS-485/RS-422 Line Driver/Receivers
# Tx/Rx 1Tx + 1Rx
Duplex Full
VSUPPLY (V) 5
Data Rate (kbps) (min) 115
ICC (mA) (typ) 0.375
Tx EN Yes
Rx EN Yes
ICC (Shutdn.) (µA) (typ) 0.001
Oper. Temp. (°C) -40 to +85
0 to +70
Package/Pins PDIP/14
SOIC (N)/14
Budgetary
Price (See Notes)
1.84

主要特征

  • ESD Protection for RS-485 I/O Pins
    ±15kV, Human Body Model
  • True Fail-Safe Receiver While Maintaining EIA/TIA-485 Compatibility
  • Enhanced Slew-Rate Limiting Facilitates Error-Free Data Transmission (MAX3080E–MAX3085E/MAX3089E)
  • 1nA Low-Current Shutdown Mode (Except MAX3081E/MAX3084E/MAX3087E)
  • Pin-Selectable Full/Half-Duplex Operation (MAX3089E)
  • Phase Controls to Correct for Twisted-Pair Reversal (MAX3089E)
  • Allow Up to 256 Transceivers on the Bus

应用/用途

  • 工业控制局域网
  • 电平转换器
  • RS-422/RS-485通信
  • 用于EMI敏感应用的收发器

描述

The MAX3080E–MAX3089E are ±15kV electrostatic discharge (ESD)-protected, high-speed transceivers for RS-485/RS-422 communication that contain one driver and one receiver. These devices feature fail-safe circuitry, which guarantees a logic-high receiver output when the receiver inputs are open or shorted. This means that the receiver output will be a logic high if all transmitters on a terminated bus are disabled (high impedance). The MAX3080E/MAX3081E/MAX3082E feature reduced slew-rate drivers that minimize EMI and reduce reflections caused by improperly terminated cables, allowing error-free data transmission up to 115kbps. The MAX3083E/MAX3084E/MAX3085E offer higher driver output slew-rate limits, allowing transmit speeds up to 500kbps. The MAX3086E/MAX3087E/MAX3088Es' driver slew rates are not limited, making transmit speeds up to 10Mbps possible. The MAX3089E's slew rate is selectable between 115kbps, 500kbps, and 10Mbps by driving a selector pin with a single three-state driver. All devices feature enhanced ESD protection. All transmitter outputs and receiver inputs are protected to ±15kV using the Human Body Model.

These transceivers typically draw 375µA of supply current when unloaded, or when fully loaded with the drivers disabled.

All devices have a 1/8-unit-load receiver input impedance that allows up to 256 transceivers on the bus. The MAX3082E/MAX3085E/MAX3088E are intended for halfduplex communications, while the MAX3080E/MAX3081E/MAX3083E/MAX3084E/MAX3086E/MAX3087E are intended for full-duplex communications. The MAX3089E is selectable between half-duplex and full-duplex operation. It also features independently programmable receiver and transmitter output phase via separate pins.

简化框图

MAX3080E、MAX3083E、MAX3086E:引脚配置 MAX3080E、MAX3083E、MAX3086E:引脚配置 Zoom icon

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