MAX3140EEI+T Maxim Integrated Products, MAX3140EEI+T Datasheet - Page 13

• 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

Figure 1. Driver DC Test Load
Figure 3. Driver Timing Test Circuit
Figure 5. Driver Propagation Delays
SPI/MICROWIRE-Compatible UART with Integrated
V
DIFF
DI
-V
3V
V
Y
0
Z
O
0
O
V
O
1.5V
t
R
10%
1/2 V
Y
Z
DI
O
DE
______________________________________________________________________________________
V
True Fail-Safe RS-485/RS-422 Transceivers
V
CC
OD
90%
t
PLH
V
Y
t
Z
SKEW =
DIFF
V
= V (Y) - V (Z)
ID
|
t
R
R
PLH
- t
PHL
V
t
PHL
OC
R
C
C
DIFF
|
L1
L2
t
F
90%
1.5V
10%
1/2 V
O
Figure 2. Receiver Enable/Disable Timing Test Load
Figure 4. Driver Enable/Disable Timing Test Load
Figure 6. Driver Enable and Disable Times
DE
Y, Z
Y, Z
V
3V
OL
0
0
UNDER TEST
RECEIVER
OUTPUT
OUTPUT
15pF
1.5V
C
TEST POINT
L
C
2.3V
2.3V
L
t
t
ZL(SHDN)
ZH(SHDN)
500Ω
OUTPUT NORMALLY HIGH
OUTPUT NORMALLY LOW
1k
, t
, t
ZL
ZH
S1
S2
t
t
HZ
LZ
S1
S2
1k
1.5V
V
V
V
OL
OH
CC
V
CC
+0.5V
-0.5V
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