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MAX3440EASA+T

Description
RS-485 interface IC 10mbps fail-safe RS-485/j1708 tcvr
CategoryAnalog mixed-signal IC    Drivers and interfaces   
File Size298KB,19 Pages
ManufacturerMaxim
Websitehttps://www.maximintegrated.com/en.html
Environmental Compliance
Download Datasheet Parametric View All

MAX3440EASA+T Overview

RS-485 interface IC 10mbps fail-safe RS-485/j1708 tcvr

MAX3440EASA+T Parametric

Parameter NameAttribute value
Is it lead-free?Lead free
Is it Rohs certified?conform to
MakerMaxim
Parts packaging codeSOIC
package instructionSOP, SOP8,.25
Contacts8
Reach Compliance Codecompli
ECCN codeEAR99
Factory Lead Time7 weeks
Differential outputYES
Number of drives1
Input propertiesDIFFERENTIAL SCHMITT TRIGGER
Interface integrated circuit typeLINE TRANSCEIVER
Interface standardsEIA-422; EIA-485
JESD-30 codeR-PDSO-G8
JESD-609 codee3
length4.9 mm
Humidity sensitivity level1
Number of functions1
Number of terminals8
Maximum operating temperature125 °C
Minimum operating temperature-40 °C
Minimum output swing1.5 V
Maximum output low current0.001 A
Package body materialPLASTIC/EPOXY
encapsulated codeSOP
Encapsulate equivalent codeSOP8,.25
Package shapeRECTANGULAR
Package formSMALL OUTLINE
Peak Reflow Temperature (Celsius)260
power supply5 V
Certification statusNot Qualified
Maximum receive delay2000 ns
Number of receiver bits1
Maximum seat height1.75 mm
Maximum slew rate30 mA
Maximum supply voltage5.25 V
Minimum supply voltage4.75 V
Nominal supply voltage5 V
surface mountYES
technologyBICMOS
Temperature levelAUTOMOTIVE
Terminal surfaceTin (Sn)
Terminal formGULL WING
Terminal pitch1.27 mm
Terminal locationDUAL
Maximum time at peak reflow temperature30
maximum transmission delay2000 ns
width3.9 mm
19-2666; Rev 2; 11/10
±15kV ESD-Protected, ±60V Fault-Protected,
10Mbps, Fail-Safe RS-485/J1708 Transceivers
General Description
The MAX3440E–MAX3444E fault-protected RS-485 and
J1708 transceivers feature
±60V
protection from signal
faults on communication bus lines. Each device contains
one differential line driver with three-state output and one
differential line receiver with three-state input. The 1/4-unit-
load receiver input impedance allows up to 128 trans-
ceivers on a single bus. The devices operate from a 5V
supply at data rates of up to 10Mbps. True fail-safe inputs
guarantee a logic-high receiver output when the receiver
inputs are open, shorted, or connected to an idle data line.
Hot-swap circuitry eliminates false transitions on the
data bus during circuit initialization or connection to a
live backplane. Short-circuit current-limiting and ther-
mal shutdown circuitry protect the driver against exces-
sive power dissipation, and on-chip
±15kV
ESD
protection eliminates costly external protection devices.
The MAX3440E–MAX3444E are available in 8-pin SO
and PDIP packages and are specified over industrial
and automotive temperature ranges.
±15kV
ESD Protection
±60V
Fault Protection
Guaranteed 10Mbps Data Rate
(MAX3441E/MAX3443E)
Hot Swappable for Telecom Applications
True Fail-Safe Receiver Inputs
Enhanced Slew-Rate-Limiting Facilitates
Error-Free Data Transmission
(MAX3440E/MAX3442E/MAX3444E)
Allow Up to 128 Transceivers on the Bus
-7V to +12V Common-Mode Input Range
Automotive Temperature Range (-40°C to +125°C)
Industry-Standard Pinout
Features
MAX3440E–MAX3444E
Ordering Information
PART
MAX3440EESA+
MAX3440EEPA+
MAX3440EASA+
MAX3440EAPA+
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +125°C
-40°C to +125°C
PIN-PACKAGE
8 SO
8 PDIP
8 SO
8 PDIP
Applications
RS-422/RS-485 Communications
Truck and Trailer Applications
Industrial Networks
Telecommunications Systems
Automotive Applications
HVAC Controls
DATA RATE
(Mbps)
0.25
2.5 to 10
0.25
2.5 to 10
0.25
LOW-POWER
SHUTDOWN
No
No
Yes
Yes
Yes
+Denotes
a lead(Pb)-free/RoHS-compliant package.
Ordering Information continued at end of data sheet.
Selector Guide
RECEIVER/DRIVER
ENABLE
Yes
Yes
Yes
Yes
Yes
TRANSCEIVERS
ON BUS
128
128
128
128
128
HOT SWAP
Yes
Yes
Yes
Yes
Yes (only
RE)
PART
MAX3440E
MAX3441E
MAX3442E
MAX3443E
MAX3444E
TYPE
RS-485
RS-485
RS-485
RS-485
J1708
Pin Configurations and Typical Operating Circuits
TOP VIEW
+
FAULT 1
RO 2
DE/RE 3
DI
4
D
R
8
7
6
5
V
CC
B
A
GND
FAULT 1
RO 2
DE/RE
3
D
R
DE/RE
+
8 V
CC
7 B
Rt
6
A
5 GND
MAX3440E
MAX3441E
B
Rt
A
R
D
DI
DI 4
RO
FAULT
DIP/SO
DIP/SO
Pin Configurations and Typical Operating Circuits continued at end of data sheet.
________________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
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