MAX481E/MAX483E/MAX485E/
MAX487E–MAX491E/MAX1487E
±±15k ꢀED-ꢁrotected, Elew-Rate-Limited,
Low-ꢁower, RE-481/RE-422 Transceivers
General Description
Next-Generation Device Features
The MAX481E, MAX483E, MAX485E, MAX487E–
MAX491E, and MAX1487E are low-power transceivers for
RS-485 and RS-422 communications in harsh environ-
ments. Each driver output and receiver input is protected
against 15ꢀk electro-static discharge ꢁESꢂD shocꢀs,
without latchup. These parts contain one driver and one
receiver. The MAX483E, MAX487E, MAX488E, and
MAX489E feature reduced slew-rate drivers that minimize
EMI and reduce reflections caused by improperly termi-
nated cables, thus allowing error-free data transmission
up to 250ꢀbps. The driver slew rates of the MAX481E,
MAX485E, MAX490E, MAX491E, and MAX1487E are not
limited, allowing them to transmit up to 2.5Mbps.
♦ For Fault-Tolerant Applications:
MAX3430: ±±0ꢀ Fault-ꢁrotecteꢂd Fail-ꢃaꢄed ꢅ14-
Unit Loaꢂd +3.3ꢀd Rꢃ-4±5 Transceiver
MAX30±0–MAX30±9: Fail-ꢃaꢄed High-ꢃpeeꢂ
(ꢅ0Mbps)d ꢃlew-Rate-Limiteꢂd Rꢃ-4±51Rꢃ-422
Transceivers
♦ For ꢃpace-Constraineꢂ Applications:
MAX3460–MAX3464: +5ꢀd Fail-ꢃaꢄed 20Mbpsd
ꢁroꢄibusd Rꢃ-4±51Rꢃ-422 Transceivers
MAX3362: +3.3ꢀd High-ꢃpeeꢂd Rꢃ-4±51Rꢃ-422
Transceiver in a ꢃOT23 ꢁackage
MAX32±0E–MAX32±4E: ±ꢅ5kꢀ EꢃS-ꢁrotecteꢂd
52Mbpsd +3ꢀ to +5.5ꢀd ꢃOT23d Rꢃ-4±51Rꢃ-422
True Fail-ꢃaꢄe Receivers
MAX3030E–MAX3033E: ±ꢅ5kꢀ EꢃS-ꢁrotecteꢂd
+3.3ꢀd Quaꢂ Rꢃ-422 Transmitters
These transceivers draw as little as 120µA supply cur-
rent when unloaded or when fully loaded with disabled
drivers ꢁsee Selector GuideD. Additionally, the MAX481E,
MAX483E, and MAX487E have a low-current shutdown
mode in which they consume only 0.5µA. All parts oper-
ate from a single +5k supply.
♦ For Multiple Transceiver Applications:
MAX32931MAX32941MAX3295: 20Mbpsd +3.3ꢀd
ꢃOT23d Rꢃ-4±51Rꢃ-422 Transmitters
ꢂrivers are short-circuit current limited, and are protected
against excessive power dissipation by thermal shutdown
circuitry that places their outputs into a high-impedance
state. The receiver input has a fail-safe feature that guar-
antees a logic-high output if the input is open circuit.
♦ For Fail-ꢃaꢄe Applications:
MAX3440E–MAX3444E: ±ꢅ5kꢀ EꢃS-ꢁrotecteꢂd
±60ꢀ Fault-ꢁrotecteꢂd ꢅ0Mbpsd Fail-ꢃaꢄe
Rꢃ-4±51Jꢅ70± Transceivers
The MAX487E and MAX1487E feature quarter-unit-load
receiver input impedance, allowing up to 128 trans-
ceivers on the bus. The MAX488E–MAX491E are
designed for full-duplex communications, while the
MAX481E, MAX483E, MAX485E, MAX487E, and
MAX1487E are designed for half-duplex applications.
For applications that are not ESꢂ sensitive see the pin-
and function-compatible MAX481, MAX483, MAX485,
MAX487–MAX491, and MAX1487.
♦ For Low-ꢀoltage Applications:
MAX34±3E1MAX34±5E1MAX34±6E1MAX34±±E1
MAX3490E1MAX349ꢅE: +3.3ꢀ ꢁowereꢂd ±ꢅ5kꢀ
EꢃS-ꢁrotecteꢂd ꢅ2Mbpsd ꢃlew-Rate-Limiteꢂd
True Rꢃ-4±51Rꢃ-422 Transceivers
Ordering Information
Applications
ꢁART
TEMꢁ RANGE
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
-40°C to +85°C
-40°C to +85°C
ꢁIN-ꢁACKAGE
8 Plastic ꢂIP
8 SO
Low-Power RS-485 Transceivers
Low-Power RS-422 Transceivers
Level Translators
MAX4±ꢅECPA
MAX481ECSA
MAX481EEPA
MAX481EESA
MAX4±3ECPA
MAX483ECSA
MAX483EEPA
MAX483EESA
8 Plastic ꢂIP
8 SO
Transceivers for EMI-Sensitive Applications
Industrial-Control Local Area Networꢀs
8 Plastic ꢂIP
8 SO
8 Plastic ꢂIP
8 SO
Ordering Information continued at end of data sheet.
Selector Guide appears at end of data sheet.
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
19-0410; Rev 4; 10/03