ADM3490ARZ Analog Devices Inc, ADM3490ARZ Datasheet

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

ADM3490ARZ

Manufacturer Part Number
ADM3490ARZ
Description
IC TXRX RS-422/485 3.3V 8-SOIC
Manufacturer
Analog Devices Inc
Type
Transceiverr
Datasheet

Specifications of ADM3490ARZ

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
2
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:
ADM3490ARZ
Manufacturer:
ADI
Quantity:
12 000
FEATURES
Operate with 3.3 V supply
Interoperable with 5 V logic
EIA RS-422 and RS-485 compliant over full
Data rate options
Half- and full-duplex options
Reduced slew rates for low EMI (ADM3483 and ADM3488)
2 nA supply current in shutdown mode
Up to 32 transceivers on the bus
−7 V to +12 V bus common-mode range
Specified over the –40°C to +85°C temperature range
8 ns skew (ADM3485/ADM3490/ADM3491)
8-lead SOIC and 14-lead SOIC (ADM3491 only) packages
APPLICATIONS
Low power RS-485/RS-422 applications
Telecom
Industrial process control
HVAC
GENERAL DESCRIPTION
The ADM3483/ADM3485/ADM3488/ADM3490/ADM3491 are
low power, differential line transceivers designed to operate using a
single 3.3 V power supply. Low power consumption, coupled with a
shutdown mode, makes the ADM3483/ADM3485/ADM3488/
ADM3490/ADM3491 ideal for power-sensitive applications.
The ADM3488/ADM3490/ADM3491 feature full-duplex com-
munication, while the ADM3483/ADM3485 are designed for
half-duplex communication.
The ADM3483/ADM3488 feature slew rate limited drivers that
minimize EMI and reduce reflections caused by improperly ter-
minated cables, allowing error-free data transmission at data rates
up to 250 kbps.
The ADM3485/ADM3490/ADM3491 transmit at up to 10 Mbps.
The receiver input impedance is 12 kΩ, allowing up to 32 trans-
ceivers 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
Rev. D
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.
common-mode range
(ADM3483/ADM3485/ADM3491)
ADM3483/ADM3488: 250 kbps
ADM3485/ADM3490/ADM3491: 10 Mbps
ADM3483/ADM3485/ADM3488/ADM3490/ADM3491
Full-Duplex, RS-485/RS-422 Transceivers
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
3.3 V Slew Rate Limited, Half- and
in the internal driver circuitry during fault conditions, then the
thermal shutdown circuit forces the driver output into a high
impedance state. If the inputs are unconnected (floating), the
receiver contains a fail-safe feature that results in a logic high
output state. The parts are fully specified over the commercial
and industrial temperature ranges. The ADM3483/ADM3485/
ADM3488/ADM3490 are available in 8-lead SOIC_N; the
ADM3491 is available in a 14-lead SOIC_N.
FUNCTIONAL BLOCK DIAGRAMS
©2005-2010 Analog Devices, Inc. All rights reserved.
RO
RE
DE
RO
RO
RE
DE
DI
DI
DI
ADM3488/
ADM3483/
ADM3485
ADM3490
ADM3491
D
D
D
Figure 1.
Figure 2.
Figure 3.
GND
R
R
GND
R
V
V
CC
CC
A
B
A
B
Y
A
B
Y
Z
Z
www.analog.com

Related parts for ADM3490ARZ

ADM3490ARZ Summary of contents

Page 1

ADM3483/ADM3485/ADM3488/ADM3490/ADM3491 FEATURES Operate with 3.3 V supply Interoperable with 5 V logic EIA RS-422 and RS-485 compliant over full common-mode range Data rate options ADM3483/ADM3488: 250 kbps ADM3485/ADM3490/ADM3491: 10 Mbps Half- and full-duplex options Reduced slew rates for low EMI ...

Page 2

ADM3483/ADM3485/ADM3488/ADM3490/ADM3491 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 General Description ......................................................................... 1 Functional Block Diagrams............................................................. 1 Revision History ............................................................................... 2 Specifications..................................................................................... 4 Timing Specifications—ADM3485/ADM3490/ADM3491.... 5 Timing Specifications—ADM3483/ADM3488........................ 5 Timing Specifications—ADM3483/ADM3485/ADM3488/ ADM3490/ADM3491 .................................................................. 6 Absolute Maximum Ratings............................................................ 7 ESD Caution.................................................................................. ...

Page 3

Table 1. ADM34xx Part Comparison Guaranteed Data Supply Part No. Rate (Mbps) Voltage (V) ADM3483 0.25 3.0 to 3.6 ADM3485 10 3.0 to 3.6 ADM3488 0.25 3.0 to 3.6 ADM3490 10 3.0 to 3.6 ADM3491 10 3.0 to 3.6 ADM3483/ADM3485/ADM3488/ADM3490/ADM3491 ...

Page 4

ADM3483/ADM3485/ADM3488/ADM3490/ADM3491 SPECIFICATIONS V = 3.3 V ± 0 unless otherwise noted MIN MAX Table 2. Parameter DRIVER Differential Output Voltage ( Δ for Complementary Output States OD ...

Page 5

TIMING SPECIFICATIONS—ADM3485/ADM3490/ADM3491 25°C, unless otherwise noted Table 3. Parameter DRIVER Differential Output Delay ( Differential Output Transition Time (t TD Propagation Delay, Low-to-High Level (t Propagation Delay, High-to-Low Level (t ...

Page 6

ADM3483/ADM3485/ADM3488/ADM3490/ADM3491 TIMING SPECIFICATIONS—ADM3483/ADM3485/ADM3488/ADM3490/ADM3491 25°C, unless otherwise noted Table 5. Parameter RECEIVER Time to Shutdown (t ) SHDN 1 ADM3483/ADM3485/ADM3491 Propagation Delay, Low-to-High Level (t ADM3485/ADM3490/ADM3491 ADM3483/ADM3488 Propagation Delay, High-to-Low Level (t ADM3485/ADM3490/ADM3491 ...

Page 7

ABSOLUTE MAXIMUM RATINGS T = 25°C, unless otherwise noted. A Table 6. Parameter V to GND CC Digital I/O Voltage (DE, RE, DI) Digital I/O Voltage (RO) Driver Output/Receiver Input Voltage Operating Temperature Range Storage Temperature Range θ Thermal Impedance ...

Page 8

ADM3483/ADM3485/ADM3488/ADM3490/ADM3491 PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS ADM3483 ADM3485 TOP VIEW (Not to Scale) DI GND 4 5 Figure 4. ADM3483/ADM3485 Pin Configuration Table 7. Pin Function Descriptions ...

Page 9

TEST CIRCUITS A B/Z Figure 7. Differential Output Voltage and Common-Mode Voltage Drivers 375Ω 375Ω Figure 8. Differential Output Voltage Drivers with Varying Common-Mode ...

Page 10

ADM3483/ADM3485/ADM3488/ADM3490/ADM3491 50pF L 1 GENERATOR 50Ω ≤ 6.0ns PPR = 250kHz, 50% DUTY CYCLE INCLUDES PROBE AND STRAY CAPACITANCE. L Figure 13. Driver Enable and Disable Times ...

Page 11

SWITCHING CHARACTERISTICS IN 1.5V 1. 90% 90% 50% 50% OUT 10 Figure 16. Driver Differential Output Delay and Transition Times IN 1.5V 1.5V t PLH A OUT t PHL B OUT Figure ...

Page 12

ADM3483/ADM3485/ADM3488/ADM3490/ADM3491 TYPICAL PERFORMANCE CHARACTERISTICS 0.5 1.0 1.5 2.0 OUTPUT VOLTAGE (V) Figure 22. Output Current vs. Receiver Output Low Voltage –16 –14 –12 –10 –8 –6 –4 – 0.5 1.0 ...

Page 13

OUTPUT VOLTAGE (V) Figure 28. Output Current vs. Driver Output Low Voltage –125 –115 –105 –95 –85 –75 –65 –55 –45 –35 –25 –15 –5 –7 –6 ...

Page 14

ADM3483/ADM3485/ADM3488/ADM3490/ADM3491 CIRCUIT DESCRIPTION The ADM3483/ADM3485/ADM3488/ADM3490/ADM3491 are low power transceivers for RS-485 and RS-422 communi- cations. The ADM3483/ADM3488 transmit and receive at data rates up to 250 kbps; the ADM3485/ADM3490/ADM3491 trans- mit Mbps. The ADM3488/ADM3490/ADM3491 are full-duplex ...

Page 15

LINE LENGTH VS. DATA RATE The RS-485 and RS-422 standards cover line lengths up to 4000 feet. For line lengths greater than 4000 feet, see Figure 36. ADM3483/ ADM3485 ...

Page 16

ADM3483/ADM3485/ADM3488/ADM3490/ADM3491 MASTER ADM3488/ ADM3490 ADM3488/ ADM3490 SLAVE Figure 34. ADM3488/ADM3490 Full-Duplex Daisy-Chain Network MASTER ADM3488/ ADM3490 ...

Page 17

OUTLINE DIMENSIONS 0.25 (0.0098) 0.10 (0.0040) COPLANARITY 4.00 (0.1575) 3.80 (0.1496) 0.25 (0.0098) 0.10 (0.0039) COPLANARITY 0.10 CONTROLLING DIMENSIONS ARE IN MILLIMETERS; INCH DIMENSIONS (IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN ...

Page 18

... ADM3485ARZ–REEL7 ADM3488ARZ −40°C to +85°C ADM3488ARZ–REEL7 −40°C to +85°C −40°C to +85°C ADM3490ARZ ADM3490ARZ–REEL7 −40°C to +85°C ADM3491AR −40°C to +85°C ADM3491AR-REEL −40°C to +85°C ADM3491AR-REEL7 −40°C to +85°C ADM3491ARZ − ...

Page 19

NOTES ADM3483/ADM3485/ADM3488/ADM3490/ADM3491 Rev Page ...

Page 20

ADM3483/ADM3485/ADM3488/ADM3490/ADM3491 NOTES ©2005-2010 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D05524-0-12/10(D) Rev Page ...

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