Test circuits and waveforms, Typical operating characteristics (continued) – Rainbow Electronics MAX3079E User Manual
Page 9
MAX3070E–MAX3079E
+3.3V, ±15kV ESD-Protected, Fail-Safe,
Hot-Swap, RS-485/RS-422 Transceivers
_______________________________________________________________________________________
9
Test Circuits and Waveforms
DRIVER PROPAGATION DELAY (500kbps)
MAX3070E toc18
400ns/div
V
Y
- V
Z
2V/div
DI
2V/div
DRIVER PROPAGATION DELAY (16Mbps)
MAX3070E toc19
10ns/div
V
Z
1V/div
V
Y
1V/div
DI
2V/div
RECEIVER PROPAGATION DELAY (16Mbps)
MAX3070E toc20
20ns/div
V
A
1V/div
V
B
1V/div
RO
2V/div
Typical Operating Characteristics (continued)
(V
CC
= 3.3V, T
A
= +25°C, unless otherwise noted.)
Y
Z
V
OD
V
OC
R
L
/2
R
L
/2
Figure 1. Driver DC Test Load
DI
DE
3V
Z
Y
V
OD
R
L
C
L
Figure 2. Driver Timing Test Circuit
DI
V
CC
0
Z
Y
V
O
0
-V
O
V
O
V
CC
/2
t
DPLH
t
DPHL
1/2 V
O
10%
t
DR
90%
90%
1/2 V
O
10%
t
DF
V
DIFF
= V (Y) - V (Z)
V
DIFF
t
SKEW
=
|
t
DPLH
-
t
DPHL
|
Figure 3. Driver Propagation Delays