Datasheet > XR3070-78X

XR3070-78X

更新时间： 2024-09-17 00:50:39

品牌	Logo	应用领域
艾科嘉 - EXAR		/
页数	文件大小	规格书
24页	547K
描述
LOW POWER 18V TOLERANT RS-485/RS-422 3.3V TRANSCEIVERS

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XR3070-78X 数据手册

XR3070-78X

LOW POWER 18V TOLERANT RS-485/RS-422 +3.3V TRANSCEIVERS

MAY 2015

REV. 1.0.2

GENERAL DESCRIPTION

FEATURES

The XR3070-78X family of high performance RS-485/

422 devices are designed for improved performance in

noisy industrial environments and increased tolerance

to system faults.

 10% Higher SNR (Signal-to-Noise Ratio)

compared to other RS-485 devices (±.65V vs. ±.5V)

 18V Fault Tolerance on Analog Bus pins

 Robust ESD (ElectroStatic Discharge) Protection:

The analog bus pins can withstand direct shorts up to

±±8V, and are protected against ESD events up to

±±5kV. The differential high output driver delivers ±0%

higher SNR than standard RS-485/422 devices, afford-

ing additional noise margin or extended cable lengths.

±15kV IEC 61000-4-2 Air Gap Discharge

± 8kV IEC 61000-4-2 Contact Discharge

±15kV Human Body Model

± 4kV Human Body Model on non-bus pins

 +3.0V to +3.6V Operation (3.3V ± ±0%)

 300μA Idle Current, ±nA Shutdown Current

The receivers include full fail-safe circuitry, guarantee-

ing a logic-high receiver output when the receiver

inputs are open, shorted, or undriven. The receiver

input impedance is at minimum 96kW (±/8 unit load),

allowing up to 256 devices on the bus while preserving

the full signal margin.

 Enhanced Receiver Fail-Safe Protection for Open,

Shorted, or Terminated but Idle Data Lines

 Hot-Swap Glitch Protection on DE and RE Pins

 Driver Short Circuit Current Limit and Thermal

Shutdown for Overload Protection

The drivers are protected by short circuit detection as

well as thermal shutdown, and maintain high imped-

ance in shutdown or when powered off. The XR3070-

75X drivers are slew limited for reduced EMI and error-

free communication over long or unterminated data

cables.

 ±/8 Unit Load Allows up to 256 Devices on Bus

 Operating Temperature Range:

Industrial -40°C to 85°C

Extended -40°C to ±25°C

 Industry Standard 8 and ±4 NSOIC Packages

The devices with DE and RE pins include hot swap cir-

cuitry to prevent false transitions on the bus during

powerup or live insertion, and can enter a ±nA low cur-

rent shutdown mode for extreme power savings.

The transceivers draw less than 600μA from a +3.3V

supply, and typically only 300μA when idling with the

receivers active.

TYPICAL APPLICATIONS

 Motor Control

 Security Systems

V_CC

 Building and Process Automation

 Remote Utility Meter Reading

 Energy Monitoring and Control

 Long or Unterminated Transmission Lines

B/Z

A/Y

GND

Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (510) 668-7000 • FAX (510) 668-7017 • www.exar.com

12 3 4 5 6 7...24

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与XR3070-78X相关器件

型号	品牌	获取价格	描述	数据表
XR3070XED-F	EXAR	获取价格	LOW POWER 18V TOLERANT RS-485/RS-422 3.3V TRANSCEIVERS
XR3070XID-F	EXAR	获取价格	LOW POWER 18V TOLERANT RS-485/RS-422 3.3V TRANSCEIVERS
XR3070XIDTR-F	EXAR	获取价格	IC TXRX RS485/422 250KBPS 14SOIC
XR3071XED-F	EXAR	获取价格	LOW POWER 18V TOLERANT RS-485/RS-422 3.3V TRANSCEIVERS
XR3071XID-F	EXAR	获取价格	IC TXRX RS485/422 250KBPS 8SOIC
XR3071XIDTR-F	EXAR	获取价格	IC TXRX RS485/422 250KBPS 8SOIC
XR3072XED-F	EXAR	获取价格	LOW POWER 18V TOLERANT RS-485/RS-422 3.3V TRANSCEIVERS
XR3072XID-F	EXAR	获取价格	IC TXRX RS485/422 250KBPS 8SOIC
XR3072XIDTR-F	EXAR	获取价格	IC TXRX RS485/422 250KBPS 8SOIC
XR3073XED-F	EXAR	获取价格	LOW POWER 18V TOLERANT RS-485/RS-422 3.3V TRANSCEIVERS

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