Rainbow Electronics MAX13486E - Manual (Page 9)

MAX13485E/MAX13486E
Half-Duplex RS-485/RS-422 Transceivers in µDFN
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1.5V 1.5V
A, B
0
0
OUTPUT NORMALLY LOW
DE
OUTPUT NORMALLY HIGH
t DZL(SHDN) ,t DZL
t DZH(SHDN) ,t DZH
t DLZ
t DHZ
2.3V
2.3V
V OL + 0.5V
V OH + 0.5V
A, B
V OL
V CC
Figure 4. Driver Enable and Disable Times
ATE V ID
A
B
R
RECEIVER
OUTPUT
Figure 6. Receiver Propagation Delay Test Circuit
OUTPUT
UNDER TEST
500 Ω S1
S2
V CC
C
L
Figure 5. Driver-Enable and -Disable-Timing Test Load
1.5V 1.5V
1V
-1V
f = 1MHz, t LH
≤ 3ns, t
HL
≤ 3ns
t RPHL t RPLH
V OH
V
OL
RO
A
B
t RSKEW = |t RPHL - t RPLH |
Figure 7. Receiver Propagation Delays
Test Circuits and Waveforms (continued)