SP3495E Datasheet, PDF (12/17 Pages) Exar Corporation – HIGH SPEED +3.3V RS-485/RS-422 TRANSCEIVERS WITH +/-15KV ESD PROTECTION AND ADVANCED FAILSAFE

SP3495E-3497E
HIGH SPEED +3.3V RS-485/RS-422 TRANSCEIVERS WITH +/-15KV ESD PROTECTION AND ADVANCED FAILSAFE
REV. 1.0.0
FIGURE 14. RECEIVER ENABLE AND DISABLE TIMES TEST CIRCUIT
1.5V
-1.5V
S3
B
A
R
RE
GENERATOR
50Ω
1kΩ
C_L= 15pF
S1
Vcc
S2
FIGURE 15. RECEIVER ENABLE AND DISABLE TIMING DIAGRAM 1
S1 is open, S2 is closed, S3 = 1.5V
3V
RE
1.5V
t t ZH, ZH(SHDN)
VOH
OUT
VOH /2
0V
FIGURE 16. RECEIVER ENABLE AND DISABLE TIMING DIAGRAM 2
S1 is closed, S2 is open, S3 = -1.5V
3V
RE
1.5V
0V
t t ZL, ZL(SHDN)
VCC
OUT
VOL= VCC /2
VOL
12