MAX491 Maxim Integrated Products, MAX491 Datasheet

MAX491

Manufacturer Part Number

MAX491

Description

Manufacturer

Maxim Integrated Products

Datasheets

1.MAX491.pdf (16 pages)

2.MAX491.pdf (19 pages)

3.MAX491.pdf (16 pages)

Specifications of MAX491

Case

SOP-14

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Meier Automation Equipment Co., Limited

Part Number:

MAX491

Manufacturer:

MAXIM/美信

Quantity:

20 000

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

MAX4910ETE+

Manufacturer:

Quantity:

3 200

Company:

Meier Automation Equipment Co., Limited

Part Number:

MAX4910ETE+T

Manufacturer:

MAXIM/美信

Quantity:

20 000

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

MAX4914BELT+T

Manufacturer:

Maxim

Quantity:

766

Company:

Meier Automation Equipment Co., Limited

Part Number:

MAX4914BELT+T

Manufacturer:

MAXIM/美信

Quantity:

20 000

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

MAX4914BELTT

Manufacturer:

KAWASAKI

Quantity:

355

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

MAX4915AELT+TG05

Manufacturer:

NXP

Quantity:

7 000

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

MAX4915AEUK+

Manufacturer:

Maxim Integrated Products

Quantity:

1 826

Company:

Meier Automation Equipment Co., Limited

Part Number:

MAX491CP

Manufacturer:

MAXIM/美信

Quantity:

20 000

Company:

Meier Automation Equipment Co., Limited

Part Number:

MAX491CPD

Manufacturer:

MAX

Quantity:

20 000

Company:

HardFindElectronics Ltd

Part Number:

MAX491CPD+

Manufacturer:

MAXIM

Quantity:

860

Current page: 1 of 16
Download datasheet (134Kb)

The MAX481E, MAX483E, MAX485E, MAX487E–MAX491E,

and MAX1487E are low-power transceivers for RS-485 and

RS-422 communications in harsh environments. Each driver

output and receiver input is protected against ±15kV electro-

static discharge (ESD) shocks, 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 terminated cables, thus allowing error-free

data transmission up to 250kbps. The driver slew rates of the

MAX481E, MAX485E, MAX490E, MAX491E, and MAX1487E

are not limited, allowing them to transmit up to 2.5Mbps.

These transceivers draw as little as 120µA supply current

when unloaded or when fully loaded with disabled drivers

(see Selection Table ). Additionally, the MAX481E,

MAX483E, and MAX487E have a low-current shutdown

mode in which they consume only 0.5µA. All parts operate

from a single +5V supply.

Drivers 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 guaran-

tees a logic-high output if the input is open circuit.

The MAX487E and MAX1487E feature quarter-unit-load

receiver input impedance, allowing up to 128 transceivers

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 ESD sen-

sitive see the pin- and function-compatible MAX481,

MAX483, MAX485, MAX487–MAX491, and MAX1487.

________________________Applications

19-0410; Rev 3; 7/96

______________________________________________________________Selection Table

For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800

_______________General Description

MAX1487E

MAX481E

MAX483E

MAX485E

MAX487E

MAX488E

MAX489E

MAX490E

MAX491E

NUMBER

PART

Low-Power RS-485 Transceivers

Low-Power RS-422 Transceivers

Level Translators

Transceivers for EMI-Sensitive Applications

Industrial-Control Local Area Networks

±15kV ESD-Protected, Slew-Rate-Limited,

HALF/FULL

DUPLEX

________________________________________________________________ Maxim Integrated Products

Half

Full

Low-Power, RS-485/RS-422 Transceivers

DATA RATE

(Mbps)

0.25

2.5

SLEW-RATE

LIMITED

Yes

LOW-POWER

SHUTDOWN

Yes

____________________________Features

Ordering Information continued on last page.

______________Ordering Information

MAX481ECPA

MAX481ECSA

MAX481EEPA

MAX481EESA

ESD Protection: ±15kV—Human Body Model

Slew-Rate Limited for Error-Free Data

Transmission (MAX483E/487E/488E/489E)

Low Quiescent Current:

-7V to +12V Common-Mode Input Voltage Range

Three-State Outputs

30ns Propagation Delays, 5ns Skew

(MAX481E/485E/490E/491E/1487E)

Full-Duplex and Half-Duplex Versions Available

Allows up to 128 Transceivers on the Bus

(MAX487E/MAX1487E)

Current Limiting and Thermal Shutdown for

Driver Overload Protection

RECEIVER/

120µA (MAX483E/487E/488E/489E)

230µA (MAX1487E)

300µA (MAX481E/485E/490E/491E)

ENABLE

DRIVER

PART

Yes

QUIESCENT

CURRENT

-40°C to +85°C

( A)

300

120

300

120

300

230

TEMP. RANGE

0°C to +70°C

TRANSMITTERS

NUMBER OF

ON BUS

128

PIN-PACKAGE

8 Plastic DIP

8 SO

8 Plastic DIP

8 SO

COUNT

Related parts for MAX491

Related keywords

MAX491 datasheet
MAX491 data sheet
MAX491 pdf datasheet
MAX491 component
MAX491 part
MAX491 distributor
MAX491 RoHS
MAX491 datasheet download