ADM3493ARZ Analog Devices Inc, ADM3493ARZ Datasheet

IC TXRX RS-422/485 3.3V 8-SOIC

ADM3493ARZ

Manufacturer Part Number
ADM3493ARZ
Description
IC TXRX RS-422/485 3.3V 8-SOIC
Manufacturer
Analog Devices Inc
Type
Transceiverr
Datasheet

Specifications of ADM3493ARZ

Number Of Drivers/receivers
1/1
Protocol
RS422, RS485
Voltage - Supply
3 V ~ 3.6 V
Mounting Type
Surface Mount
Package / Case
8-SOIC (3.9mm Width)
Device Type
Differential Line Transceiver
Ic Interface Type
RS422, RS485
No. Of Drivers
1
Supply Voltage Range
3V To 3.6V
Driver Case Style
SOIC
No. Of Pins
8
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ADM3493ARZ
Manufacturer:
ADI/亚德诺
Quantity:
20 000
Part Number:
ADM3493ARZ-REEL7
Manufacturer:
YAGEO
Quantity:
40 000
FEATURES
Operates with 3.3 V supply
Interoperable with 5 V logic
EIA RS-422 and RS-485 compliant over full CM range
Data rate: 250 kbps
Half duplex transceiver
Reduced slew rates for low EMI
2 nA supply current in shutdown mode
Up to 256 transceivers on a bus
−7 V to +12 V bus common-mode range
Specified over −40°C to +85°C temperature range
8 ns skew
Available in 8-lead SOIC
APPLICATIONS
Low power RS-485 applications
EMI sensitive systems
DTE-DCE interfaces
Industrial control
Packet switching
Local area networks
Level translators
GENERAL DESCRIPTION
The ADM3493 is a low power, differential line transceiver
designed to operate using a single 3.3 V power supply. Low
power consumption, coupled with a shutdown mode, makes it
ideal for power-sensitive applications. The ADM3493 is suitable
for communication on multipoint bus transmission lines.
The device contains one driver and one receiver. Designed for
half-duplex communication, the ADM3493 features a slew rate
limited driver that minimizes EMI and reduces reflections
caused by improperly terminated cables, allowing error-free
data transmission at data rates up to 250 kbps.
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
Half Duplex RS-485/RS-422 Transceiver
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
The receiver input impedance is 96 kΩ, allowing up to 256
transceivers to be connected on the bus. A thermal shutdown
circuit prevents excessive power dissipation caused by bus
contention or by output shorting. If a significant temperature
increase is detected in the internal driver circuitry during fault
conditions then the thermal shutdown circuit forces the driver
output into a high impedance state. The receiver contains a fail-
safe feature that results in a logic high output state, if the inputs
are unconnected (floating).
The ADM3493 is fully specified over the commercial and
industrial temperature ranges and is available in an 8-lead SOIC.
FUNCTIONAL BLOCK DIAGRAM
3.3 V Slew Rate Limited,
RO
RE
DE
DI
©2005 Analog Devices, Inc. All rights reserved.
ADM3493
D
Figure 1.
GND
R
V
CC
A
B
ADM3493
www.analog.com

Related parts for ADM3493ARZ

ADM3493ARZ Summary of contents

Page 1

FEATURES Operates with 3.3 V supply Interoperable with 5 V logic EIA RS-422 and RS-485 compliant over full CM range Data rate: 250 kbps Half duplex transceiver Reduced slew rates for low EMI 2 nA supply current in shutdown mode ...

Page 2

ADM3493 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 Functional Block Diagram .............................................................. 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 Timing Specifications .................................................................. 4 Absolute Maximum Ratings............................................................ 5 ESD Caution.................................................................................. 5 Pin Configurations and Function Descriptions ...

Page 3

SPECIFICATIONS V = 3.3 V ±0 unless otherwise noted MIN MAX Table 1. Parameter DRIVER Differential Output Voltage Δ for Complementary Output States OD Common-Mode Output Voltage, ...

Page 4

ADM3493 TIMING SPECIFICATIONS 25°C, unless otherwise noted Table 2. Parameter DRIVER Differential Output Delay Differential Output Transition Time Propagation Delay, Low-to-High Level, t Propagation Delay, High-to-Low Level, t ...

Page 5

ABSOLUTE MAXIMUM RATINGS T = 25°C, unless otherwise noted. A Table 3. Parameter V to GND CC Digital I/O Voltage (DE DI) Digital I/O Voltage (R ) OUT Driver Output/Receiver Input Voltage Operating Temperature Range Storage Temperature Range ...

Page 6

ADM3493 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Table 4. . Pin Function Descriptions Pin No. Mnemonic GND ADM3493 RE B ...

Page 7

TEST CIRCUITS Figure 3. Driver V and V OD 375Ω 375Ω Figure 4. Driver V with Varying Common-Mode Voltage OD V ...

Page 8

ADM3493 SWITCHING CHARACTERISTICS IN 1.5V 1. 90% 90% 50% 50% OUT 10 Figure 12. Driver Differential Output Delay and Transition Times IN 1.5V 1.5V t PLH OUT t PHL B V OUT OM ...

Page 9

TYPICAL PERFORMANCE CHARACTERISTICS 0.5 1.0 1.5 2.0 OUTPUT VOLTAGE (V) Figure 18. Output Current vs. Receiver Output Low Voltage –16 –14 –12 –10 –8 –6 –4 – 0.5 1.0 1.5 ...

Page 10

ADM3493 140 120 100 OUTPUT VOLTAGE (V) Figure 24. Output Current vs. Driver Output Low Voltage –125 –115 –105 –95 –85 –75 –65 –55 –45 –35 –25 –15 –5 –7 –6 ...

Page 11

CIRCUIT DESCRIPTION The ADM3493 is a low power transceiver for RS-485 and RS-422 communications. The ADM3493 can transmit and receive at data rates up to 250 kbps in a half duplex configuration. Driver Enable (DE) and Receiver Enable ( RE ...

Page 12

... ADM3493 OUTLINE DIMENSIONS ORDERING GUIDE Model Temperature Range 1 ADM3493ARZ −40°C to +85°C ADM3493ARZ-REEL7 1 −40°C to +85° Pb-free part. © 2005 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D05715-0-10/05(0) 5.00 (0.1968) 4 ...

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