MAX3483_14 Datasheet, PDF (1/17 Pages) Maxim Integrated Products – 3.3V-Powered, 10Mbps and Slew-Rate-Limited True RS-485/RS-422 Transceivers

AVAILABLE
MAX3483/MAX3485/MAX3486/
MAX3488/MAX3490/MAX3491
3.3V-Powered, 10Mbps and Slew-Rate-Limited
True RS-485/RS-422 Transceivers
_______________General Description ____________________________Features
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.
________________________Applications
Low-Power RS-485/RS-422 Transceivers
Telecommunications
Transceivers for EMI-Sensitive Applications
Industrial-Control Local Area Networks
Functional Diagrams
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
______________Ordering Information
PART
TEMP. RANGE PIN-PACKAGE
MAX3483CPA
0°C to +70°C
8 Plastic DIP
MAX3483CSA
0°C to +70°C
8 SO
MAX3483C/D
0°C to +70°C
Dice*
MAX3483EPA
-40°C to +85°C
8 Plastic DIP
MAX3483ESA
-40°C to +85°C
8 SO
MAX3485CPA
0°C to +70°C
8 Plastic DIP
MAX3485CSA
0°C to +70°C
8 SO
MAX3485C/D
0°C to +70°C
Dice*
MAX3485EPA
-40°C to +85°C
8 Plastic DIP
MAX3485ESA
-40°C to +85°C
8 SO
Ordering Information continued at end of data sheet.
* Contact factory for for dice specifications.
______________________________________________________________Selection Table
PART
NUMBER
GUARANTEED
DATA RATE
(Mbps)
SUPPLY
VOLTAGE
(V)
HALF/FULL
DUPLEX
MAX3483
0.25
Half
MAX3485
10
Half
MAX3486
2.5
Half
3.0 to 3.6
PinMCAoXn3fi4g8u8rations ap0p.e2a5r at end of data sheet.
Full
Fun_Mc_Ati_Xon₃a₄l₉D₀iagrams c₁o₀ntinued at end of data sheet. _Full
UC_MSP_Ai_Xs₃a₄t₉ra₁demark of M₁₀axim Integrated Products, Inc. _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
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
19-0333; Rev 0; 12/94