MAX14840E Datasheet, PDF (9/15 Pages) Maxim Integrated Products – 40Mbps, +3.3V, RS-485 Half-Duplex Transceivers

40Mbps, +3.3V, RS-485 Half-Duplex
Transceivers
Typical Operating Characteristics (continued)
(VCC = +3.3V, TA = +25NC, unless otherwise noted.)
DRIVER PROPAGATION DELAY
vs. TEMPERATURE
25
20
tDPLH
15
tDPHL
10
5
R_L = 54I, C_L = 50pF
0
-40 -15 10 35 60 85 110 125
TEMPERATURE (°C)
DIFFERENTIAL DRIVER SKEW (tDSKEW)
vs. TEMPERATURE
2.0
RL = 54I, CL = 50pF
1.5
1.0
0.5
0
-40 -15 10 35 60 85 110 125
TEMPERATURE (°C)
DRIVER OUTPUT RISE AND FALL TIME
vs. TEMPERATURE
10
RL = 54I, CL = 50pF
8
6
RISE TIME
4
2
FALL TIME
0
-40 -15 10 35 60 85 110 125
TEMPERATURE (°C)
DRIVER OUTPUT TRANSITION SKEW
(tDSKEW) vs. TEMPERATURE
4
RL = 54I, CL = 50pF
3
2
1
0
-40 -15 10 35 60 85 110 125
TEMPERATURE (°C)
DRIVER/RECEIVER
PROPAGATION DELAY
MAX14840E toc15
DI
5V/div
10ns/div
A/B
2V/div
RO
5V/div
RECEIVER PROPAGATION DELAY
vs. TEMPERATURE
25
20
15
tRPLH
10
5
0
-40
t_RPHL
C_L = 50pF
-15 10 35 60 85 110 125
TEMPERATURE (°C)
RECEIVER INPUT CAPACITANCE
vs. FREQUENCY
70
60
50
40
30
20
10
0
100
1000
10,000
FREQUENCY (kHz)
100,000
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