MAX13442E Datasheet, PDF (10/18 Pages) Maxim Integrated Products – ±15kV ESD-Protected, ±80V Fault-Protected, Fail-Safe RS-485/J1708 Transceivers

±15kV ESD-Protected, ±80V Fault-Protected,
Fail-Safe RS-485/J1708 Transceivers
Test Circuits and Waveforms (continued)
+1.5V
-1.5V
S3
A
V_{ID R}
R_O
1kΩ
S1
S2
V_CC
B
GENERATOR
(NOTE 4)
50Ω
C_L = 20pF
(NOTE 5)
3V
S1 OPEN
RE
1.5V
S2 CLOSED
RE
t_RPZH
t_RPSH
t_RPWAKE
S3 = 1.5V
0V
V_OH
RO
1.5V
RO
0V
1.5V
t_RPZL
t_RPSL
1.5V
3V
S1 CLOSED
S2 OPEN
S3 = -1.5V
0V
V_CC
V_OL
RE
RO _0.5V
1.5V
t_RPHZ
3V
S1 OPEN
S2 CLOSED
RE
S3 = 1.5V
0V
V_OH
RO
1.5V
t_RPLZ
0.5V
3V
S1 CLOSED
S2 OPEN
S3 = -1.5V
0V
V_CC
0V
V_OL
Figure 8. Receiver Enable and Disable Times
Note 4: The input pulse is supplied by a generator with the following characteristics: f = 5MHz, 50% duty cycle; t_r ≤ 6ns; Z₀ = 50Ω.
Note 5: C_L includes probe and stray capacitance.
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