SP334 Datasheet, PDF (1/12 Pages) Sipex Corporation – Programmable RS-232/RS-485 Transceiver

®
SP334
Programmable RS-232/RS-485 Transceiver
s +5V Only Operation
s Software Programmable RS-232 or RS-
485 Selection
s Three RS-232 Drivers and Five Receivers
in RS-232 Mode
s Two RS-485 Full-Duplex Transceivers in
RS-485 Mode
s Full Differential Driver Tri-State (Hi-Z)
Control
s Receiver Output Tri-State Control
DESCRIPTION…
The SP334 is a programmable RS-232 and/or RS-485 transceiver IC. The SP334 contains three
drivers and five receivers when selected in RS-232 mode; and two drivers and two receivers when
selected in RS-485 mode.
The RS-232 transceivers can typically operate at 230kbps while adhering to the RS-232
specifications. The RS-485 transceivers can operate up to 10Mbps while adhering to the RS-485
specifications. The RS-485 drivers can be disabled (High-Z output) by the TXEN enable pin. The
RS-232 and RS-485 receiver outputs can be disabled by the RXEN enable pin.
SP334DS/10
TI3 1
TXEN(n/c) 2
TX4(n/c) 3
TX3 4
VCC 5
TX1 6
TX2 7
GND 8
C1+ 9
V+ 10
C2+ 11
C1– 12
C2– 13
V– 14
SP334
28 TI2
27 TI1
26 RXEN
25 RS232/RS485
24 RI5
23 RX5
22 RX4
21 RX3
20 RX2
19 RX1
18 RI4
17 RI3
16 RI2
15 RI1
(in RS-232 mode)
Programmable RS-232/RS-485 Transceiver
1
© Copyright 2000 Sipex Corporation