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The SP3490 and SP3491 devices are +3.3V low power full-duplex transceivers that meet the specifications of the RS-485 and RS-422 serial protocols. These devices are pin-to-pin compatible with the Exar SP490 and SP491 devices as well as popular industry standards. The SP3490 and SP3491 feature Exar's BiCMOS process, allowing low power operation without sacrif.
RS-422 serial protocols up to 10Mbps under load. The SP3491 is identical to the SP3490 with the addition of driver and reciveiver tri-state enable lines.
NC 1
14 VCC 13 NC
R2
12 A
R
11 B
REB DE
3 4
D5
D
6
GND GND
7
10 Z 9Y 8 NC
SP3491
Exar Corporation 48720 Kato Road, Fremont CA, 94538
• 510-668-7017
• www.exar.com
SP3490_3491_102_102710
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 of the specifications below is not implied. Exposure to absolute ma.
SP3490 - Sipex
The SP3490 and the SP3491 are +3.3V low power full duplex transceivers that meet the specifications of the RS-485 and RS.
SP3490 - MaxLinear
The SP3490 and SP3491 devices are 3.3V low power full-duplex transceivers that meet the specifications of the RS-485 and.
| No. | Partie # | Fabricant | Description | Fiche Technique |
|---|---|---|---|---|
| 1 | SP3491 |
MaxLinear |
3.3V Low Power Full-Duplex RS-485 Transceivers |
|
| 2 | SP3491 |
Sipex |
+3.3V Low Power Full Duplex RS-485 Transceivers with 10Mbps Data Rate |
|
| 3 | SP3491 |
Exar |
+3.3V Low Power Full-Duplex RS-485 Transceivers |
|
| 4 | SP3493 |
Sipex |
+3.3V Low Power RS-485/RS-422 Transceivers |
|
| 5 | SP3494 |
MaxLinear |
3.3V Low Power RS-485/RS-422 Transceiver |
|
| 6 | SP3494 |
Sipex |
+3.3V Low Power RS-485/RS-422 Transceivers |
|
| 7 | SP3494 |
Exar |
+3.3V Low Power RS-485/RS-422 Transceiver |
|
| 8 | SP3495E |
Exar Corporation |
(SP3495E - SP3497E) 3.3V High Speed RS-485/RS-422 Transceivers |
|
| 9 | SP3496E |
Exar Corporation |
(SP3495E - SP3497E) 3.3V High Speed RS-485/RS-422 Transceivers |
|
| 10 | SP3497E |
Exar Corporation |
(SP3495E - SP3497E) 3.3V High Speed RS-485/RS-422 Transceivers |
|
| 11 | SP3400 |
Littelfuse |
Diode Array |
|
| 12 | SP3401 |
Littelfuse |
18kV Diode Array |
|