Product Summary

The SP331ET is a programmable RS-232 and/or RS-485 transceiver IC. The SP331ET contains four drivers and four receivers when selected in RS-232 mode; and two drivers and two receivers when selected in RS-485 mode. The SP331ET also contains a dual mode which has two RS-232 drivers/receivers plus one differential RS-485 driver/receiver.

Parametrics

SP331ET absolute maximum ratings: (1)VCC: +7V; (2)Storage Temperature: -65℃ to +150℃; (3)Power Dissipation 28-pin Plastic DIP: 1000mW; (4)Power Dissipation28-pin Plastic SOIC: 1000mW.

Features

SP331ET features: (1)+5V Only Operation; (2)Software Programmable RS-232 or RS-485Selection; (3)Four RS-232 Transceivers in RS-232 Mode; (4)Two RS-485 Full-Duplex Transceivers in RS-485 Mode; (5)Two RS-232 Transceivers and One RS-485 Transceiver in Dual Mode; (6)Self-Testing Loopback Mode; (7)Full Driver Tri-State (Hi-Z) Control; (8)Ideal for RS-232 to RS-485 conversion.

Diagrams

SP331ET TYPICAL APPLICATION CIRCUITS

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
SP331ET-L
SP331ET-L

Exar

RS-232 Interface IC Programmable RS-232/RS-485

Data Sheet

0-1: $6.00
1-5: $5.28
5-10: $4.56
10-50: $3.84
SP331ET-L/TR
SP331ET-L/TR

Exar

RS-232 Interface IC Programmable RS-232/RS-485

Data Sheet

0-1072: $3.36
1072-1500: $3.36