MAX3471EUA+T Maxim Integrated Products, MAX3471EUA+T Datasheet

IC TXRX DIFF RS485/422 8-UMAX

MAX3471EUA+T

Manufacturer Part Number
MAX3471EUA+T
Description
IC TXRX DIFF RS485/422 8-UMAX
Manufacturer
Maxim Integrated Products
Type
Transceiverr
Datasheet
1.MAX3471CUA.pdf (8 pages)

Specifications of MAX3471EUA+T

Number Of Drivers/receivers
1/1
Protocol
RS422, RS485
Voltage - Supply
2.5 V ~ 5.5 V
Mounting Type
Surface Mount
Package / Case
8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX3471 half-duplex transceiver is intended for
lithium battery-powered RS-485/RS-422 applications. It
draws only 1.6µA (typical) supply current from a 3.6V
supply with the receiver enabled and the driver dis-
abled. Its wide 2.5V to 5.5V supply voltage guarantees
operation over the lifetime of a lithium battery.
This device features true fail-safe operation that guar-
antees a logic-high receiver output when the receiver
inputs are open or shorted. This means that the receiv-
er output will be a logic high if all transmitters on a ter-
minated bus are disabled (high impedance). The
MAX3471 has a 1/8-unit load input resistance. When
driver outputs are enabled and pulled above V
below GND, internal circuitry prevents battery back-
charging.
The MAX3471 is available in an 8-pin µMAX package.
Differential Transceiver for Battery-Powered Systems
________________________Applications
19-0497; Rev 0; 2/98
________________General Description
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 408-737-7600 ext. 3468.
Remote Meter Reading
Battery-Powered Differential Communications
Level Translators
MAX3471
RO
DE
RE
DI
________________________________________________________________ Maxim Integrated Products
REMOTE UNIT
D
R
V
GND
CC
B
A
V
CC
B
1.6µA, RS-485/RS-422, Half-Duplex,
DI
TYPICAL HALF-DUPLEX RS-485 NETWORK
D
REMOTE UNIT
A
DE
RO
R
RE
CC
GND
or
V
CC
B
____________________________Features
_______________Ordering Information
___________________Pin Configuration
DI
MAX3471CUA
MAX3471EUA
TOP VIEW
1.6µA Supply Current with Receiver Enabled
+2.5V to +5.5V Single-Supply Operation
True Fail-Safe Receiver Input
Available in µMAX Package
1/8-Unit-Load Receiver Input
-7V to +10V Common-Mode Input Voltage Range
D
REMOTE UNIT
A
PART
DE
RO
R
RE
Typical Application Circuit
RO
RE
DE
DI
GND
1
2
3
4
-40°C to +85°C
B
A
TEMP. RANGE
0°C to +70°C
CENTRAL UNIT
MAX3471
V
CC
MAX
R
D
7
5
8
6
DE
RO
RE
DI
V
B
A
GND
CC
PIN-PACKAGE
8 µMAX
8 µMAX
0.1 F
V
CC
1

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MAX3471EUA+T Summary of contents

Page 1

... GND REMOTE UNIT MAX3471 ________________________________________________________________ Maxim Integrated Products For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800. For small orders, phone 408-737-7600 ext. 3468. 1.6µA, RS-485/RS-422, Half-Duplex, ____________________________Features 1.6µA Supply Current with Receiver Enabled +2.5V to +5.5V Single-Supply Operation True Fail-Safe Receiver Input Available in µ ...

Page 2

RS-485/RS-422, Half-Duplex, Differential Transceiver for Battery-Powered Systems ABSOLUTE MAXIMUM RATINGS (Note 1) Supply Voltage (V ) ..............................................................7V CC Control Input Voltage (RE, DE)...................-0. Driver Input Voltage (DI).............................-0. Driver Output/Receiver Input Voltage (A, B).....................±10.5V Receiver Output ...

Page 3

Differential Transceiver for Battery-Powered Systems DC ELECTRICAL CHARACTERISTICS (continued +2.5V to +5.5V MIN MAX CC PARAMETER SYMBOL Receiver Output Short-Circuit I OSR Current Supply Current I SWITCHING CHARACTERISTICS (V = +2.5V to ...

Page 4

RS-485/RS-422, Half-Duplex, Differential Transceiver for Battery-Powered Systems __________________________________________Typical Operating Characteristics (V = +3.6V +25°C, unless otherwise noted OUTPUT CURRENT vs. RECEIVER OUTPUT LOW VOLTAGE ...

Page 5

Differential Transceiver for Battery-Powered Systems (V = +3.6V +25°C, unless otherwise noted OUTPUT CURRENT vs. DRIVER OUTPUT HIGH VOLTAGE ( ...

Page 6

RS-485/RS-422, Half-Duplex, Differential Transceiver for Battery-Powered Systems (V = +3.6V +25°C, unless otherwise noted RECEIVER PROPAGATION DELAY 1 s/div ______________________________________________________________Pin Description PIN NAME Receiver Output. When RE is low ≥ -50mV, ...

Page 7

Differential Transceiver for Battery-Powered Systems Table 1. Transmitting INPUTS Driver output disabled D __________ Applications Information Transceivers on the Bus ...

Page 8

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 8 _____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 1998 Maxim Integrated Products V ...

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