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MAX3443EASA+ 数据手册 - Maxim Integrated（美信）
制造商:
Maxim Integrated（美信）
分类:
接口芯片
封装:
SOIC-8
描述:
MAXIM INTEGRATED PRODUCTS MAX3443EASA+ 芯片, RS485 收发器, 10MBPS, 5.25V, NSOIC-8
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MAX3443EASA+数据手册
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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 transceiv-
ers on a single bus. The devices operate from a 5V supply
at data rates of up to 10Mbps. True fail-safe inputs guar-
antee 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 thermal shut-
down circuitry protect the driver against excessive 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.
Applications
● RS-422/RS-485 Communications
● Industrial Networks
● Telecommunications Systems
● HVAC Controls
Features
● ±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
19-2666; Rev 3; 4/14
+Denotes a lead(Pb)-free/RoHS-compliant package.
Ordering Information continued at end of data sheet.
PART TEMP RANGE PIN-PACKAGE
MAX3440EESA+ -40°C to +85°C 8 SO
MAX3440EEPA+ -40°C to +85°C 8 PDIP
MAX3440EASA+ -40°C to +125°C 8 SO
MAX3440EAPA+ -40°C to +125°C 8 PDIP
Ordering Information
Pin Configurations and Typical Operating Circuits continued at end of data sheet.
PART TYPE
DATA RATE
(Mbps)
LOW-POWER
SHUTDOWN
RECEIVER/DRIVER
ENABLE
TRANSCEIVERS
ON BUS
HOT SWAP
MAX3440E RS-485 0.25 No Yes 128 Yes
MAX3441E RS-485 2.5 to 10 No Yes 128 Yes
MAX3442E RS-485 0.25 Yes Yes 128 Yes
MAX3443E RS-485 2.5 to 10 Yes Yes 128 Yes
MAX3444E J1708 0.25 Yes Yes 128 Yes (only RE)
TOP VIEW
1
2
3
4
8
5
V
CC
GND
DI
DE/RE
RO
FAULT
R
D
Rt
Rt
7
6
D
R
DE/RE
FAULT
DI
RO
A
B
1
2
3
4
8
7
6
5
V
CC
B
A
GND
DI
DE/RE
RO
FAULT
+
+
DIP/SO DIP/SO
B
A
MAX3440E
MAX3441E
R
D
MAX3440E–MAX3444E ±15kV ESD-Protected, ±60V Fault-Protected,
10Mbps, Fail-Safe RS-485/J1708 Transceivers
Selector Guide
Pin Congurations and Typical Operating Circuits
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