SP337EBEY-L Datasheet, PDF (13/18 Pages) Exar Corporation – 3.3V TO 5V RS-232/RS-485/RS-422 MULTIPROTOCOL TRANSCEIVER

SP337E
REV. 1.0.2
3.3V TO 5V RS-232/RS-485/RS-422 MULTIPROTOCOL TRANSCEIVER
FIGURE 16. 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 17. 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 18. RS-232 DRIVER OUTPUT SLEW RATE TEST CIRCUIT
Tx
GENERATOR
50Ω
C_L
OUT
R_L
13