Datasheet > MAX491E

MAX491E

更新时间： 2024-11-06 14:57:19

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
16页	304K
描述
±15kV ESD保护、限摆率、低功耗、RS-485/RS-422收发器

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MAX491E 数据手册

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

-40°C to +85°C

0°C to +70°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

12 3 4 5 6 7...16

中文翻译

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与MAX491E相关器件

型号	品牌	获取价格	描述	数据表
MAX491ECPA	MAXIM	获取价格	+15kV ESD-Protected Slew-Rate-Limited Low-Power RS-485/RS-422 Transceivers(122.47 k)
MAX491ECPD	MAXIM	获取价格	【15kV ESD-Protected, Slew-Rate-Limited, Low-P
MAX491ECPD+	MAXIM	获取价格	Line Transceiver, 1 Func, 1 Driver, 1 Rcvr, CMOS, PDIP14, 0.300 INCH, LEAD FREE, PLASTIC,
MAX491ECSA	MAXIM	获取价格	+15kV ESD-Protected Slew-Rate-Limited Low-Power RS-485/RS-422 Transceivers(122.47 k)
MAX491ECSD	MAXIM	获取价格	【15kV ESD-Protected, Slew-Rate-Limited, Low-P
MAX491ECSD+	MAXIM	获取价格	Line Transceiver, 1 Func, 1 Driver, 1 Rcvr, CMOS, PDSO14, 0.150 INCH, LEAD FREE, MS-012B,
MAX491ECSD+T	MAXIM	获取价格	暂无描述
MAX491EEPA	MAXIM	获取价格	+15kV ESD-Protected Slew-Rate-Limited Low-Power RS-485/RS-422 Transceivers(122.47 k)
MAX491EEPD	MAXIM	获取价格	【15kV ESD-Protected, Slew-Rate-Limited, Low-P
MAX491EESA	MAXIM	获取价格	+15kV ESD-Protected Slew-Rate-Limited Low-Power RS-485/RS-422 Transceivers(122.47 k)

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