Datasheet

MAX13442E/MAX13443E/MAX13444E
±15kV ESD-Protected, ±80V Fault-Protected,
Fail-Safe RS-485/J1708 Transceivers
10 ______________________________________________________________________________________
50Ω
GENERATOR
(NOTE 5)
C
L
= 20pF
(NOTE 6)
V
CC
3V
0V
V
CC
V
OL
R
+1.5V
-1.5V
V
ID
1.5V
RO
S1
S2
1kΩ
RE
1.5V
S1 CLOSED
S2 OPEN
V
S3
= -1.5V
t
RPZL
t
RPSL
3V
0V
V
OH
0V
1.5V
RE
1.5V
S1 OPEN
S2 CLOSED
V
S3
= 1.5V
t
RPZH
t
RPSH
t
RPWAKE
3V
0V
V
CC
V
OL
0.5V
RO
RE
1.5V
S1 CLOSED
S2 OPEN
V
S3
= -1.5V
t
RPLZ
3V
0V
V
OH
0V
0.5V
1.5V
RO
RE
S1 OPEN
S2 CLOSED
V
S3
= 1.5V
t
RPHZ
S3
R
O
A
B
RO
Figure 8. Receiver Enable and Disable Times
Test Circuits and Waveforms (continued)
Note 5: The input pulse is supplied by a generator with the following characteristics: f = 5MHz, 50% duty cycle; t
r
≤ 6ns; Z
0
= 50Ω.
Note 6: C
L
includes probe and stray capacitance.