SP334CT-L-TR Datasheet, PDF (7/14 Pages) Exar Corporation – Programmable RS-232/RS-485 Transceiver

+3V
RXEN
0V
5V
RECEIVER OUT
V_IL
V_IH
RECEIVER OUT
0V
t _SKEW = |t_PHL- t_PLH|
1.5V _{f = 1MHz; tR ≤ 10ns; tF ≤ 10ns}
t_ZL
1.5V _{Output normally LOW}
1.5V ^{Output normally HIGH}
t_ZH
Figure 8. Receiver Enable and Disable Times
1.5V
t_LZ
0.5V
0.5V
t_HZ
TTL
INPUT
DRIVER
OUTPUT
Figure 9. Typical RS-232 Driver Output
TTL
Input
Driver Output A
Driver Output B
Differential
Output
VA - VB
Figure 10. Typical RS-485 Driver Output
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)
Figure 11. SP334 Pinout
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com

SP334_100_090909