MAX483ECPA+ Maxim Integrated Products, MAX483ECPA+ Datasheet - Page 9
![IC TXRX RS485/RS422 8-DIP](/photos/1/39/13900/175-8-dip_sml.jpg)
MAX483ECPA+
Manufacturer Part Number
MAX483ECPA+
Description
IC TXRX RS485/RS422 8-DIP
Manufacturer
Maxim Integrated Products
Type
Transceiverr
Specifications of MAX483ECPA+
Number Of Drivers/receivers
1/1
Protocol
RS422, RS485
Voltage - Supply
4.75 V ~ 5.25 V
Mounting Type
Through Hole
Package / Case
8-DIP (0.300", 7.62mm)
Data Rate
0.25 Mbps
Propagation Delay Time Ns
250 ns
Operating Supply Voltage
5 V
Supply Current
350 uA
Operating Temperature Range
0 C to + 70 C
Input Voltage
0.8 V to 2 V
Maximum Power Dissipation
727 mW
Mounting Style
Through Hole
Output Voltage
3 V
Product
RS-422/RS-485 Combination
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Figure 4. Driver DC Test Load
Figure 6. Driver/Receiver Timing Test Circuit
The MAX483 and MAX487–MAX489 are slew-rate limit-
ed, minimizing EMI and reducing reflections caused by
improperly terminated cables. Figure 12 shows the dri-
ver output waveform and its Fourier analysis of a
150kHz signal transmitted by a MAX481, MAX485,
MAX490, MAX491, or MAX1487. High-frequency har-
_________________________________________________________________Test Circuits
DI
DE
MAX483/MAX487/MAX488/MAX489:
3V
Y
Z
Y
Z
Reduced EMI and Reflections
_______________________________________________________________________________________
V
V
OD
ID
R
C
C
DIFF
L1
L2
R
R
V
OC
A
B
Low-Power, Slew-Rate-Limited
RE
RO
RS-485/RS-422 Transceivers
monics with large amplitudes are evident. Figure 13
shows the same information displayed for a MAX483,
MAX487, MAX488, or MAX489 transmitting under the
same conditions. Figure 13’s high-frequency harmonics
have much lower amplitudes, and the potential for EMI
is significantly reduced.
Figure 5. Receiver Timing Test Load
Figure 7. Driver Timing Test Load
UNDER TEST
RECEIVER
OUTPUT
OUTPUT
15pF
C
TEST POINT
RL
C
L
500Ω
1kΩ
S1
S2
S1
S2
1kΩ
V
CC
V
CC
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