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MAX1481CUB+T

Description
RS-422/RS-485 interface IC RS-485/RS-422 transceivers
CategoryAnalog mixed-signal IC    Drivers and interfaces   
File Size212KB,16 Pages
ManufacturerMaxim
Websitehttps://www.maximintegrated.com/en.html
Environmental Compliance
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MAX1481CUB+T Overview

RS-422/RS-485 interface IC RS-485/RS-422 transceivers

MAX1481CUB+T Parametric

Parameter NameAttribute value
Is it lead-free?Lead free
Is it Rohs certified?conform to
MakerMaxim
Parts packaging codeSOIC
package instructionTSSOP, TSSOP10,.19,20
Contacts10
Reach Compliance Codecompli
ECCN codeEAR99
Factory Lead Time6 weeks
Differential outputYES
Number of drives1
High level input current maximum value0.000002 A
Input propertiesDIFFERENTIAL SCHMITT TRIGGER
Interface integrated circuit typeLINE TRANSCEIVER
Interface standardsEIA-422; EIA-485
JESD-30 codeS-PDSO-G10
JESD-609 codee3
length3 mm
Humidity sensitivity level1
Number of functions1
Number of terminals10
Maximum operating temperature70 °C
Minimum operating temperature
Minimum output swing2 V
Maximum output low current0.004 A
Package body materialPLASTIC/EPOXY
encapsulated codeTSSOP
Encapsulate equivalent codeTSSOP10,.19,20
Package shapeSQUARE
Package formSMALL OUTLINE, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)260
power supply5 V
Certification statusNot Qualified
Maximum receive delay150 ns
Number of receiver bits1
Maximum seat height1.1 mm
Maximum slew rate0.6 mA
Maximum supply voltage5.25 V
Minimum supply voltage4.75 V
Nominal supply voltage5 V
surface mountYES
Temperature levelCOMMERCIAL
Terminal surfaceMatte Tin (Sn)
Terminal formGULL WING
Terminal pitch0.5 mm
Terminal locationDUAL
Maximum time at peak reflow temperature30
maximum transmission delay1000 ns
width3 mm
19-1312; Rev 1; 3/06
Software-Selectable, Half-/Full-Duplex, Slew-Rate-Limited,
12Mbps, RS-485/RS-422 Transceivers in µMAX Package
_______________General Description
The MAX1481/MAX1484/MAX1485/MAX1486 provide
software-selectable, half-/full-duplex, low-power, slew-
rate-limited, and high-speed (12Mbps) RS-485/RS-422
operation in a 10-pin µMAX
®
package—the smal-
lest 10-pin package available.
The software-selectable, half-/full-duplex MAX1485/
MAX1486 make obsolete the normally larger and more
expensive solutions required for selectable half-/full-
duplex RS-485/RS-422 operation: 1) a 14-pin, full-
duplex transceiver configured via jumpers between
receiver and transmitter lines, or 2) two 8-pin, half-
duplex transceivers, which require an additional invert-
er logic gate for software selectability.
The MAX1481/MAX1484 are functionally equivalent to
the industry-standard MAX491 and 75180, and are
designed for space-constrained, full-duplex RS-422
applications.
All parts contain one driver and one receiver and fea-
ture a 1/8-unit-load receiver input impedance, allowing
up to 256 transceivers on the bus. The MAX1481/
MAX1485 feature reduced-slew-rate drivers that mini-
mize EMI and reduce reflections caused by improperly
terminated cables, allowing error-free data transmission
up to 250kbps. The MAX1484/MAX1486 driver slew
rates are not limited, allowing them to transmit up to
12Mbps.
The MAX1481/MAX1484/MAX1485/MAX1486 draw only
300µA of supply current. The MAX1481 has a low-power
shutdown mode that reduces supply current to only
0.1µA. All devices operate from a single 5V supply.
Drivers are output short-circuit current limited and are
protected 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 the
input is open circuit.
____________________________Features
o
10-Pin
µMAX
Package: Smallest 10-Pin Package
o
Software-Selectable Half-/Full-Duplex Operation
(MAX1485/MAX1486)
o
0.1µA Low-Current Shutdown Mode (MAX1481)
o
Slew-Rate Limiting Allows Error-Free Data
Transmission (MAX1481/MAX1485)
o
12Mbps High-Speed Operation
(MAX1484/MAX1486)
o
Allow up to 256 Transceivers on the Bus
MAX1481/MAX1484/MAX1485/MAX1486
______________Ordering Information
PART
MAX1481CUB
MAX1481EUB
MAX1484CUB
MAX1484EUB
MAX1485CUB
MAX1485EUB
MAX1486CUB
MAX1486EUB
TEMP RANGE
0°C to +70°C
-40°C to +85°C
0°C to +70°C
-40°C to +85°C
0°C to +70°C
-40°C to +85°C
0°C to +70°C
-40°C to +85°C
PIN-PACKAGE
10 µMAX
10 µMAX
10 µMAX
10 µMAX
10 µMAX
10 µMAX
10 µMAX
10 µMAX
________________________Applications
Low-Power RS-422/RS-485 Communications
Level Translators
Hand-Held Equipment
Battery-Powered Equipment
Transceiver for EMI-Sensitive Applications
Industrial-Control Local Area Networks
µMAX is a registered trademark of Maxim Integrated Products, Inc.
______________________________________________________________Selection Table
Part
MAX1481
MAX1484
MAX1485
MAX1486
Half/Full
Duplex
Full
Full
Selectable
Selectable
Data
Rate
(Mbps)
0.250
12
0.250
12
Slew-
Rate
Limited
Yes
No
Yes
No
Low-
Power
Shutdown
Yes
No
No
No
Driver
Enable
Yes
Yes
Yes
Yes
Receiver
Enable
Yes
Yes
No
No
Quiescent
Current
(µA)
300
300
300
300
Transceivers
on Bus
256
256
256
256
Pin-
Package
10 µMAX
10 µMAX
10 µMAX
10 µMAX
________________________________________________________________
Maxim Integrated Products
1
________________________________________________________________
Maxim Integrated Products
1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
For small orders, phone 408-737-7600 ext. 3468.
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

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Is it lead-free? Lead free - - - Lead free Lead free Lead free Lead free -
Is it Rohs certified? conform to - - - conform to conform to conform to conform to conform to
Maker Maxim - - - Maxim Maxim Maxim Maxim -
Parts packaging code SOIC - - - SOIC SOIC SOIC SOIC -
package instruction TSSOP, TSSOP10,.19,20 - - - MICRO MAX-10 TSSOP, TSSOP10,.19,20 TSSOP, TSSOP10,.19,20 TSSOP, TSSOP10,.19,20 -
Contacts 10 - - - 10 10 10 10 -
Reach Compliance Code compli - - - compliant compli compliant compliant unknown
ECCN code EAR99 - - - EAR99 EAR99 EAR99 EAR99 EAR99
Factory Lead Time 6 weeks - - - 6 weeks 6 weeks 6 weeks 6 weeks -
Differential output YES - - - YES YES YES YES -
Number of drives 1 - - - 1 1 1 1 -
High level input current maximum value 0.000002 A - - - 0.000002 A 0.000002 A 0.000002 A 0.000002 A -
Input properties DIFFERENTIAL SCHMITT TRIGGER - - - DIFFERENTIAL SCHMITT TRIGGER DIFFERENTIAL SCHMITT TRIGGER DIFFERENTIAL SCHMITT TRIGGER DIFFERENTIAL SCHMITT TRIGGER -
Interface integrated circuit type LINE TRANSCEIVER - - - LINE TRANSCEIVER LINE TRANSCEIVER LINE TRANSCEIVER LINE TRANSCEIVER -
Interface standards EIA-422; EIA-485 - - - EIA-422; EIA-485 EIA-422; EIA-485 EIA-422; EIA-485 EIA-422; EIA-485 -
JESD-30 code S-PDSO-G10 - - - S-PDSO-G10 S-PDSO-G10 S-PDSO-G10 S-PDSO-G10 -
JESD-609 code e3 - - - e3 e3 e3 e3 e4
length 3 mm - - - 3 mm 3 mm 3 mm 3 mm -
Humidity sensitivity level 1 - - - 1 1 1 1 -
Number of functions 1 - - - 1 1 1 1 -
Number of terminals 10 - - - 10 10 10 10 10
Maximum operating temperature 70 °C - - - 70 °C 85 °C 85 °C 85 °C 125 °C
Minimum output swing 2 V - - - 2 V 2 V 2 V 2 V -
Maximum output low current 0.004 A - - - 0.004 A 0.004 A 0.004 A 0.004 A -
Package body material PLASTIC/EPOXY - - - PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY -
encapsulated code TSSOP - - - TSSOP TSSOP TSSOP TSSOP -
Encapsulate equivalent code TSSOP10,.19,20 - - - TSSOP10,.19,20 TSSOP10,.19,20 TSSOP10,.19,20 TSSOP10,.19,20 -
Package shape SQUARE - - - SQUARE SQUARE SQUARE SQUARE -
Package form SMALL OUTLINE, THIN PROFILE, SHRINK PITCH - - - SMALL OUTLINE, THIN PROFILE, SHRINK PITCH SMALL OUTLINE, THIN PROFILE, SHRINK PITCH SMALL OUTLINE, THIN PROFILE, SHRINK PITCH SMALL OUTLINE, THIN PROFILE, SHRINK PITCH SMT
Peak Reflow Temperature (Celsius) 260 - - - 260 260 260 260 -
power supply 5 V - - - 5 V 5 V 5 V 5 V -
Certification status Not Qualified - - - Not Qualified Not Qualified Not Qualified Not Qualified -
Maximum receive delay 150 ns - - - 150 ns 150 ns 150 ns 150 ns -
Number of receiver bits 1 - - - 1 1 1 1 -
Maximum seat height 1.1 mm - - - 1.1 mm 1.1 mm 1.1 mm 1.1 mm -
Maximum slew rate 0.6 mA - - - 0.6 mA 0.6 mA 0.6 mA 0.6 mA -
Maximum supply voltage 5.25 V - - - 5.25 V 5.25 V 5.25 V 5.25 V -
Minimum supply voltage 4.75 V - - - 4.75 V 4.75 V 4.75 V 4.75 V -
Nominal supply voltage 5 V - - - 5 V 5 V 5 V 5 V -
surface mount YES - - - YES YES YES YES -
Temperature level COMMERCIAL - - - COMMERCIAL INDUSTRIAL INDUSTRIAL INDUSTRIAL -
Terminal surface Matte Tin (Sn) - - - Matte Tin (Sn) Matte Tin (Sn) Matte Tin (Sn) Matte Tin (Sn) Gold (Au) - with Nickel (Ni) barrier
Terminal form GULL WING - - - GULL WING GULL WING GULL WING GULL WING -
Terminal pitch 0.5 mm - - - 0.5 mm 0.5 mm 0.5 mm 0.5 mm -
Terminal location DUAL - - - DUAL DUAL DUAL DUAL -
Maximum time at peak reflow temperature 30 - - - 30 30 30 30 -
maximum transmission delay 1000 ns - - - 60 ns 1000 ns 60 ns 60 ns -
width 3 mm - - - 3 mm 3 mm 3 mm 3 mm -
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