SP337EEY-L Datasheet, PDF (10/18 Pages) Exar Corporation – 3.3V TO 5V RS-232/RS-485/RS-422 MULTIPROTOCOL TRANSCEIVER

SP337E
3.3V TO 5V RS-232/RS-485/RS-422 MULTIPROTOCOL TRANSCEIVER
FIGURE 7. RS-485 DRIVER ENABLE AND DISABLE TEST CIRCUIT
A S1
Vcc ^DI Tx
B
C_L = 50pF
GENERATOR
50Ω
OUT
R_L = 500Ω
REV. 1.0.2
FIGURE 8. RS-485 DRIVER ENABLE AND DISABLE TIMING DIAGRAM
DE
t_DZH
Vcc/2
Vcc
0
OUT
V_OM = (V_OL + Vcc)/2
FIGURE 9. RS-485 DRIVER ENABLE AND DISABLE TEST CIRCUIT 2
0.25V
0
t_DHZ
A S1
0 ^DI Tx
B
C_L = 50pF
GENERATOR
50Ω
Vcc
R_L = 500Ω
OUT
10