MAX3140EEI+T Maxim Integrated Products, MAX3140EEI+T Datasheet - Page 10

• Manufacturer Part Number: MAX3140EEI+T
• Description: IC UART W/RS485 28-QSOP
• Manufacturer: Maxim Integrated Products

Specifications of MAX3140EEI+T

• Features: Transceiver
• Fifo's: 8 Byte
• Protocol: RS232, RS485
• Voltage - Supply: 4.75 V ~ 5.25 V
• With Irda Encoder/decoder: Yes
• With False Start Bit Detection: Yes
• With Cmos: Yes
• Mounting Type: Surface Mount
• Package / Case: 28-QSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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