Datasheet

MAX3080E–MAX3089E
±15kV ESD-Protected, Fail-Safe, High-Speed (10Mbps),
Slew-Rate-Limited RS-485/RS-422 Transceivers
______________________________________________________________________________________ 17
R
B
RECEIVER
OUTPUT
ATE
A
V
ID
R
Figure 13. Receiver Propagation Delay Test Circuit
100kHz/div0Hz 1MHz
20dB/div
MAX3080/3089 FIG-14
Figure 15. Driver Output Waveform and FFT Plot of
MAX3086E/MAX3087E/MAX3088E, and MAX3089E with
SRL = GND, Transmitting a 20kHz Signal
CHARGE-CURRENT
LIMIT RESISTOR
DISCHARGE
RESISTANCE
STORAGE
CAPACITOR
C
s
100pF
R
C
1MΩ
R
D
1500Ω
HIGH-
VOLTAGE
DC
SOURCE
DEVICE
UNDER
TEST
Figure 14a. Human Body ESD Test Model
I
P
100%
90%
36.8%
t
RL
TIME
t
DL
CURRENT WAVEFORM
PEAK-TO-PEAK RINGING
(NOT DRAWN TO SCALE)
I
r
10%
0
0
AMPERES
Figure 14b. Human Body Current Waveform
100kHz/div0Hz 1MHz
B
A
20dB/div
MAX3080/3089 FIG-15
Figure 16. Driver Output Waveform and FFT Plot of
MAX3083E/MAX3084E/MAX3085E, and MAX3089E
with SRL = V
CC,
Transmitting a 20kHz Signal
100kHz/div0Hz 1MHz
B
A
20dB/div
MAX3080/3089 FIG-16
Figure 17. Driver Output Waveform and FFT Plot of
MAX3080E/MAX3081E/MAX3082E, and MAX3089E
with SRL = Unconnected, Transmitting a 20kHz Signal