SP336E Datasheet, PDF (21/30 Pages) Exar Corporation – 3.3V - 5V PROGRAMMABLE RS-232/RS-485/RS-422 SERIAL TRANSCEIVER

REV. 1.0.0
SP336E
3.3V - 5V PROGRAMMABLE RS-232/RS-485/RS-422 SERIAL TRANSCEIVER
FIGURE 18. RS-485 RECEIVER ENABLE AND DISABLE TIMES TIMING DIAGRAM 3
S1 is open, S2 is closed, S3 = 1.5V
3V
RE
1.5V
t_HZ
0.25V
VOH
OUT
0V
FIGURE 19. RS-485 RECEIVER ENABLE AND DISABLE TIMES TIMING DIAGRAM 4
S1 is closed, S2 is open, S3 = -1.5V
RE
1.5V
t LZ
3V
0V
VCC
OUT
0.25V
VOL
FIGURE 20. RS-232 DRIVER OUTPUT SLEW RATE TEST CIRCUIT
Tx
GENERATOR
50Ω
C_L
OUT
R_L
21