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X SERIES : EXCELLENCE & RELIABILITY
XR3080-88X
HIGH OUTPUT 18V TOLERANT RS-485/RS-422 +5V TRANSCEIVERS
JULY 2015
REV. 1.0.2
GENERAL DESCRIPTION
FEATURES
The XR3080-88X family of high performance RS-485/ 422 devices are designed for improved performance in noisy industrial environments and increased tolerance to system faults.
The analog bus pins can withstand direct shorts up to ±18V, and are protected against ESD events up to ±15kV. The Profibus compliant differential output delivers 40% higher SNR than standard RS-485/422 devices, affording additional noise margin or extended cable lengths.
The receivers include full fail-safe circuitry, guaranteeing a logic-high receiver output when the receiver inputs are open, shorted, or undriven. The receiver input impedance is at minimum 96k (1/8 unit load), allowing up to 256 devices on the bus while preserving the full signal margin.
The drivers are protected by short circuit detection as well as thermal shutdown, and maintain high impedance in shutdown or when powered off. The XR308085X drivers are slew limited for reduced EMI and errorfree communication over long or unterminated data cables.
The devices with DE and RE pins include hot swap circuitry to prevent false transitions on the bus during powerup or live insertion, and can enter a 1nA low current shutdown mode for extreme power savings.
40% Higher SNR (Signal-to-Noise Ratio)
compared to other RS-485 devices (2.1V vs. 1.5V)
±18V Fault Tolerance on Analog Bus pins
2.1V Driver Output (Profibus Compliant)
Robust ESD (ElectroStatic Discharge) Protection:
±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
+4.5V to +5.5V Operation (5V ± 10%)
300µA Idle Current, 1nA Shutdown Current
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
1/8th Unit Load Allows up to 256 Devices on Bus
Operating Temperature Range:
Industrial -40°C to 85°C Extended -40°C to 125°C
Industry Standard 8 and 14 NSOIC Packages
The transceivers draw less than 600µA from a +5.0V supply, and typically only 300µA when idling with the receivers active.
RO 1 R 8 VCC
RE 2
7 B/Z
DE 3
6 A/Y
DI 4 D 5 GND
TYPICAL APPLICATIONS
Motor Control Security Systems Building and Process Automation Remote Utility Meter Reading Energy Monitoring and Control Long or Unterminated Transmission Lines Profibus DP Fieldbus Networks
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (510) 668-7000 • FAX (510) 668-7017 • www.exar.com
XR3080-88X
HIGH OUTPUT 18V TOLERANT RS-485/RS-422 +5V TRANSCEIVERS
REV. 1.0.2
ABSOLUTE MAXIMUM RATINGS
These are stress ratings only and functional operation of the device at these ratings or any other above those indicated in the operation sections to the specifications below is not implied. Exposure to absolute maximum rating conditions for extended periods of time may affect reliability and cause permanent damage to the device.
VCC Input Voltage at Control and Driver Input (RE, DE, and DI)
Receiver Output Voltage (RO)
Driver Output Voltage (A, B, Y and Z) Receiver Input Voltage (A and B, half or full duplex)
Transient Voltage Pulse, through 100 Figure 6 Driver Output Current Storage Temperature Range Lead Temperature (soldering, 10s) Package Power Dissipation
8-Pin SO JA = 128.4°C/W 14-Pin SO JA = 86°C/W
-0.3V to +7.0V -0.3V to +7.0V -0.3V to (VCC + 0.3V)
±18V ±18V
±70V
±250mA -65°C to +150°C
+300°C
Maximum Junction Temperature = +150°C
CAUTION:
ESD (Electrostatic Discharge) sensitive device. Permanent damage may occur on unconnected devices subject to high energy electrostatic fields. Unused devices must be stored in conductive foam or shunts. Personnel should be properly grounded prior to handling this device. The protective foam should be discharged to the destination socket before devices are removed.
2
REV. 1.0.2
XR3080-88X
HIGH OUTPUT 18V TOLERANT RS-485/RS-422 +5V TRANSCEIVERS
ORDERING INFORMATION
PART NUMBER XR3080XID-F XR3081XID-F XR3082XID-F XR3083XID-F XR3084XID-F XR3085XID-F XR3086XID-F XR3087XID-F XR3088XID-F XR3080XED-F XR3081XED-F XR3082XED-F XR3083XED-F XR3084XED-F XR3085XED-F XR3086XED-F XR3087XED-F XR3088XED-F
DUPLEX Full Full Half Full Full Half Full Full Half Full Full Half Full Full Half Full Full Half
DATA RATE 250kbps 250kbps 250kbps 1Mbps 1Mbps 1Mbps 20Mbps 20Mbps 20Mbps 250kbps 250kbps 250kbps 1Mbps 1Mbps 1Mbps 20Mbps 20Mbps 20Mbps
PACKAGE 14-pin Narrow SOIC 8-pin Narrow SOIC 8-pin Narrow SOIC 14-pin Narrow SOIC 8-pin Narrow SOIC 8-pin Narrow SOIC 14-pin Narrow SOIC 8-pin Narrow SOIC 8-pin Narrow SOIC 14-pin Narrow SOIC 8-pin Narrow SOIC 8-pin Narrow SOIC 14-pin Narrow SOIC 8-pin Narrow SOIC 8-pin Narrow SOIC 14-pin Narrow SOIC 8-pin Narrow SOIC 8-pin Narrow SOIC
TEMPERATURE RANGE -40°C to +.