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SP1491E - Full Duplex RS-485 Transceivers

Download the SP1491E datasheet PDF. This datasheet also covers the SP1490E variant, as both devices belong to the same full duplex rs-485 transceivers family and are provided as variant models within a single manufacturer datasheet.

General Description

The SP1490E is a low power differential line driver/receiver meeting RS-485 and RS-422 standards up to 20Mbps.

The SP1491E is identical to the SP1490E with the addition of driver and receiver tristate enable lines.

Key Features

  • +5V Only.
  • Low Power BiCMOS.
  • Driver/Receiver Enable (SP1491E).
  • RS-485 and RS-422 Drivers/Receivers.
  • Pin Compatible with SN75179 (SP1490E).
  • Pin Compatible with SN75180 (SP1491E).
  • Improved ESD Specifications ±15kV Human Body Model ±15kV IEC61000-4-2 Air Discharge VCC 1 RO 2 DI 3 GND 4 SP1490E 88 PPiinn-nnSSOOIICC 8A 7B 6Z 5Y.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (SP1490E-Exar.pdf) that lists specifications for multiple related part numbers.

📁 Similar Datasheet

Part Number Description Manufacturer
SP1491E Full Duplex RS-485 Transceivers Sipex
SP1490E Full Duplex RS-485 Transceivers Sipex
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SP1410 PWM Control 2A Step-Down Converter HOT CHIP
SP1450B PCM SIGNAL MONITOR Plessey

Other Datasheets by Exar (now MaxLinear)

Part Number Description
SP1490E Full Duplex RS-485 Transceivers
SP1481E Enhanced Low Power Half-Duplex RS-485 Transceivers
SP1485E Enhanced Low Power Half-Duplex RS-485 Transceivers
SP1486E 20Mbps PROFIBUS RS485/RS422 Transceivers

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
SP1490E/SP1491E Full Duplex RS-485 Transceivers features ■ +5V Only ■ Low Power BiCMOS ■ Driver/Receiver Enable (SP1491E) ■ RS-485 and RS-422 Drivers/Receivers ■ Pin Compatible with SN75179 (SP1490E) ■ Pin Compatible with SN75180 (SP1491E) ■ Improved ESD Specifications ±15kV Human Body Model ±15kV IEC61000-4-2 Air Discharge VCC 1 RO 2 DI 3 GND 4 SP1490E 88 PPiinn-nnSSOOIICC 8A 7B 6Z 5Y APPLICATIONS ■ Industial Networks ■ Telecom ■ Motor Control ■ HVAC/ Building Control description The SP1490E is a low power differential line driver/receiver meeting RS-485 and RS-422 standards up to 20Mbps. The SP1491E is identical to the SP1490E with the addition of driver and receiver tristate enable lines.