MAX13450E Datasheet, PDF (7/17 Pages) Maxim Integrated Products – RS-485 Transceivers with Integrated 100Ω/120Ω Termination Resistors

RS-485 Transceivers with Integrated
100Ω/120Ω Termination Resistors
Typical Operating Characteristics (continued)
(VCC = +5V, VL = +1.8V, TA = +25NC, unless otherwise noted.)
DRIVER DIFFERENTIAL OUTPUT VOLTAGE
vs. TEMPERATURE
5
RDIFF = 54Ω
4
3
2
1
0
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
120Ω TERMINATION RESISTOR
vs. FREQUENCY
140
0 ^{MAX13450E/51E toc12}
120
100
R120 MAGNITUDE
-10
80
60
R120 PHASE
-20
40
20
0
-30
0.1
1
10
100
FREQUENCY (MHz)
100Ω TERMINATION RESISTOR
vs. FREQUENCY
140
0 ^{MAX13450E/51E toc11}
120
100
-10
80
R100 MAGNITUDE
60
R100 PHASE
-20
40
20
0
-30
0.1
1
10
100
FREQUENCY (MHz)
TERMINATION RESISTANCE
vs. TEMPERATURE
130
120
120Ω RESISTOR
110
100
100Ω RESISTOR
90
80
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
DRIVER PROPAGATION DELAY (250kbps)
(MAX13451E)
MAX13450E/51E toc14
SRL = HIGH
DE = HIGH
RE = HIGH
DI
1V/div
A
1V/div
DRIVER ENABLE TIME FROM SHUTDOWN
(MAX13451E)
MAX13450E/51E toc15
DE
2V/div
A
2V/div
1µs/div
B
1V/div
200ns/div
B
SRL = LOW 2V/div
RE = HIGH
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