MAX3490ESA Datasheet Download

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MAX3490ESA
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Download Datasheet
Description:
[3.3V-Powered, 10Mbps and Slew-Rate-Limited True RS-485/RS-422 Transceivers]
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199 K
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16 Pages
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Manufacturer:
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
PCB Prototype
 MAX3490ESA Datasheet Page:2MAX3490ESA Datasheet Page:3MAX3490ESA Datasheet Page:4MAX3490ESA Datasheet Page:5MAX3490ESA Datasheet Page:6MAX3490ESA Datasheet Page:7MAX3490ESA Datasheet Page:8MAX3490ESA Datasheet Page:9 
19-0333; Rev 0; 12/94
3.3V-Powered, 10Mbps and Slew-Rate-Limited
True RS-485/RS-422 Transceivers
_______________General Description
The MAX3483, MAX3485, MAX3486, MAX3488,
MAX3490, and MAX3491 are 3.3V, low-power trans-
ceivers for RS-485 and RS-422 communication. Each
part contains one driver and one receiver. The
MAX3483 and MAX3488 feature slew-rate-limited dri-
vers that minimize EMI and reduce reflections caused
by improperly terminated cables, allowing error-free
data transmission at data rates up to 250kbps. The par-
tially slew-rate-limited MAX3486 transmits up to
2.5Mbps. The MAX3485, MAX3490, and MAX3491
transmit at up to 10Mbps.
Drivers are short-circuit current limited and are protect-
ed against excessive power dissipation by thermal
shutdown circuitry that places the driver outputs into a
high-impedance state. The receiver input has a fail-safe
feature that guarantees a logic-high output if both
inputs are open circuit.
The MAX3488, MAX3490, and MAX3491 feature full-
duplex communication, while the MAX3483, MAX3485,
and MAX3486 are designed for half-duplex communi-
cation.
____________________________Features
o
Operate from a Single 3.3V Supply—
No Charge Pump!
o
Interoperable with +5V Logic
o
8ns Max Skew (MAX3485/MAX3490/MAX3491)
o
Slew-Rate Limited for Errorless Data Transmission
(MAX3483/MAX3488)
o
2nA Low-Current Shutdown Mode
(MAX3483/MAX3485/MAX3486/MAX3491)
o
-7V to +12V Common-Mode Input Voltage Range
o
Allows up to 32 Transceivers on the Bus
o
Full-Duplex and Half-Duplex Versions Available
o
Industry Standard 75176 Pinout
(MAX3483/MAX3485/MAX3486)
o
Current-Limiting and Thermal Shutdown for
Driver Overload Protection
MAX3483/MAX3485/MAX3486/MAX3488/MAX3490/MAX3491
______________Ordering Information
PART
MAX3483CPA
MAX3483CSA
MAX3483C/D
MAX3483EPA
MAX3483ESA
MAX3485CPA
MAX3485CSA
MAX3485C/D
MAX3485EPA
MAX3485ESA
TEMP. RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
8 Plastic DIP
8 SO
Dice*
8 Plastic DIP
8 SO
8 Plastic DIP
8 SO
Dice*
8 Plastic DIP
8 SO
________________________Applications
Low-Power RS-485/RS-422 Transceivers
Telecommunications
Transceivers for EMI-Sensitive Applications
Industrial-Control Local Area Networks
Ordering Information continued at end of data sheet.
* Contact factory for for dice specifications.
______________________________________________________________Selection Table
PART
NUMBER
MAX3483
MAX3485
MAX3486
MAX3488
MAX3490
MAX3491
GUARANTEED
DATA RATE
(Mbps)
0.25
10
2.5
0.25
10
10
3.0 to 3.6
SUPPLY
VOLTAGE
(V)
HALF/FULL
DUPLEX
Half
Half
Half
Full
Full
Full
SLEW-RATE
LIMITED
Yes
No
Yes
Yes
No
No
DRIVER/
RECEIVER
ENABLE
Yes
Yes
Yes
No
No
Yes
SHUTDOWN
CURRENT
(nA)
2
2
2
2
PIN
COUNT
8
8
8
8
8
14
1
________________________________________________________________
Maxim Integrated Products
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