MAX3140 Maxim, MAX3140 Datasheet - Page 10

• Manufacturer Part Number: MAX3140
• Description: SPI/MICROWIRE-Compatible UART with Integrated True Fail-Safe RS-485/RS-422 Transceivers
• Manufacturer: Maxim

SPI/MICROWIRE-Compatible UART with Integrated
True Fail-Safe RS-485/RS-422 Transceivers
(V
10
CC
140
120
100
80
60
40
20
0
______________________________________________________________________________________
= +5V, T
0
RS-485 DRIVER OUTPUT LOW VOLTAGE
(2.5V/div)
(5V/div)
(2V/div)
(5V/div)
V
V
Y
A
- V
- V
RO
DI
2
Z
B
A
OUTPUT CURRENT vs.
RS-485 RECEIVER PROPAGATION DELAY
OUTPUT LOW VOLTAGE (V)
RS-485 DRIVER PROPAGATION DELAY
= +25°C, unless otherwise noted.)
4
(SRL = OPEN OR V
6
(SRL = V
500ns/div
50ns/div
8
CC
10
)
CC
12
)
MAX3140-24
MAX3140-22
-100
Typical Operating Characteristics (continued)
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
-8
RS-485 DRIVER OUTPUT HIGH VOLTAGE
-6
OUTPUT CURRENT vs.
OUTPUT HIGH VOLTAGE (V)
-4
-2
0
2
4
(2.5V/div)
(2.5V/div)
(5V/div)
(5V/div)
V
V
Y
Y
- V
- V
6
DI
DI
Z
Z
RS-485 DRIVER PROPAGATION DELAY
RS-485 DRIVER PROPAGATION DELAY
(2V/div)
(5V/div)
V
A
- V
RO
B
RS-485 RECEIVER PROPAGATION DELAY
(SRL = OPEN)
(SRL = GND)
50ns/div
2 s/div
(SRL = GND)
50ns/div
MAX3140-23
MAX3140-25
MAX3140-21