ADM489AR-REEL Analog Devices Inc, ADM489AR-REEL Datasheet

IC TXRX RS-485 LOSLEW/EN 14SOIC

ADM489AR-REEL

Manufacturer Part Number
ADM489AR-REEL
Description
IC TXRX RS-485 LOSLEW/EN 14SOIC
Manufacturer
Analog Devices Inc
Type
Transceiverr
Datasheet

Specifications of ADM489AR-REEL

Rohs Status
RoHS non-compliant
Number Of Drivers/receivers
1/1
Protocol
RS422, RS485
Voltage - Supply
4.5 V ~ 5.5 V
Mounting Type
Surface Mount
Package / Case
14-SOIC (3.9mm Width), 14-SOL
FEATURES
Meets EIA RS-485 and RS-422 standards
250 kbps data rate
Single 5 V ± 10% supply
−7 V to +12 V bus common-mode range
12 kΩ input impedance
2 kV EFT protection meets IEC1000-4-4
High EM immunity meets IEC1000-4-3
Reduced slew rate for low EM interference
Short-circuit protection
Excellent noise immunity
30 μA supply current
APPLICATIONS
Low power RS-485 and RS-422 systems
DTE-DCE interface
Packet switching
Local area networks
Data concentration
Data multiplexers
Integrated services digital network (ISDN)
GENERAL DESCRIPTION
The ADM488 and ADM489 are low power, differential line
transceivers suitable for communication on multipoint bus
transmission lines. They are intended for balanced data
transmission and comply with both Electronics Industries
Association (EIA) RS-485 and RS-422 standards. Both products
contain a single differential line driver and a single differential
line receiver, making them suitable for full-duplex data transfer.
The ADM489 contains an additional receiver and driver enable
control.
The input impedance is 12 kΩ, allowing 32 transceivers to be
connected on the bus.
The ADM488/ADM489 operate from a single 5 V ± 10% power
supply. Excessive power dissipation caused by bus contention or
output shorting is prevented by a thermal shutdown circuit.
This feature forces the driver output into a high impedance state
if, during fault conditions, a significant temperature increase is
detected in the internal driver circuitry.
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.
Slew Rate Limited, EIA RS-485 Transceivers
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
The receiver contains a fail-safe feature that results in a logic
high output state if the inputs are unconnected (floating).
The ADM488/ADM489 are fabricated on BiCMOS, an
advanced mixed technology process combining low power
CMOS with fast switching bipolar technology.
The ADM488/ADM489 are fully specified over the industrial
temperature range and are available in PDIP, SOIC, and TSSOP
packages.
FUNCTIONAL BLOCK DIAGRAMS
Full-Duplex, Low Power,
RO
RO
RE
DE
DI
DI
©2006 Analog Devices, Inc. All rights reserved.
ADM488
ADM489
Figure 1.
Figure 2.
D
D
ADM488/ADM489
R
R
A
B
Z
Y
A
B
Z
Y
www.analog.com

Related parts for ADM489AR-REEL

ADM489AR-REEL Summary of contents

Page 1

FEATURES Meets EIA RS-485 and RS-422 standards 250 kbps data rate Single 5 V ± 10% supply − +12 V bus common-mode range 12 kΩ input impedance 2 kV EFT protection meets IEC1000-4-4 High EM immunity meets IEC1000-4-3 ...

Page 2

ADM488/ADM489 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 General Description ......................................................................... 1 Functional Block Diagrams............................................................. 1 Specifications..................................................................................... 3 Timing Specifications .................................................................. 4 Absolute Maximum Ratings............................................................ 5 ESD Caution.................................................................................. 5 Pin Configurations and Function Descriptions ........................... 6 Test Circuits................................................................................... 7 ...

Page 3

SPECIFICATIONS ± 10%. All specifications T CC MIN Table 1. Parameter DRIVER Differential Output Voltage Δ|V | for Complementary Output States OD Common-Mode Output Voltage Δ|V | for Complementary Output States OC ...

Page 4

ADM488/ADM489 TIMING SPECIFICATIONS ± 10%. All specifications T CC MIN Table 2. Parameter DRIVER Propagation Delay Input to Output, T PLH Driver O/P to OP, T SKEW Driver Rise/Fall Time Driver ...

Page 5

ABSOLUTE MAXIMUM RATINGS T = 25°C, unless otherwise noted. A Table 3. Parameter V CC Inputs Driver Input (DI) Control Inputs (DE, RE) Receiver Inputs (A, B) Outputs Driver Outputs Receiver Output Power Dissipation 8-Lead PDIP θ , Thermal Impedance ...

Page 6

ADM488/ADM489 PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS Table 4. ADM488 Pin Function Descriptions Pin No. Mnemonic Description 1 V Power Supply ± 10 Receiver Output. When A > 200 mV high. If ...

Page 7

TEST CIRCUITS V OD Figure 6. Driver Voltage Measurement Test Circuit 375Ω V 60Ω OD3 375Ω Figure 7. Driver Enable/Disable Test Circuit TST Rev Page ADM488/ADM489 A ...

Page 8

ADM488/ADM489 SWITCHING CHARACTERISTICS 3V 1.5V T PLH 0V B 1/2VO SKEW +VO 90% POINT 0V 10% POINT – Figure 11. Driver Propagation Delay, Rise/Fall Timing 0V A–B A–B T PLH RO 1.5V Figure 12. Receiver ...

Page 9

TYPICAL PERFORMANCE CHARACTERISTICS 0.5 1.0 1.5 OUTPUT VOLTAGE (V) Figure 15. Output Current vs. Receiver Output Low Voltage 0 –5 –10 –15 –20 3.4 3.6 3.8 4.0 4.2 4.4 OUTPUT ...

Page 10

ADM488/ADM489 100 500kHz/DIV Figure 21. Driver Output Waveform and FFT Plot Transmitting at 150 kHz FREQUENCY (MHz) Figure 22. Radiated Emissions ...

Page 11

THEORY OF OPERATION The ADM488/ADM489 are ruggedized RS-485 transceivers that operate from a single 5 V supply. They contain protection against radiated and conducted interference and are ideally suited for operation in electrically harsh environments or where cables can be ...

Page 12

ADM488/ADM489 V 300ms V 5ns 50ns 0.2/0.4ms Figure 25. IEC1000-4-4 Fast Transient Waveform Table 8 shows the peak voltages for each of the environments. Table 8. Peak Voltages Level V (kV) PSU PEAK 1 0 ...

Page 13

The ADM488/ADM489 comfortably meet Classification 1 at the most stringent (Level 3) requirement. In fact, field strengths V/m showed no performance degradation, and error- free data transmission continued even during irradiation. Table 9. Field Strengths Level V/m ...

Page 14

ADM488/ADM489 APPLICATION INFORMATION DIFFERENTIAL DATA TRANSMISSION Differential data transmission is used to reliably transmit data at high rates over long distances and through noisy environments. Differential transmission nullifies the effects of ground shifts and noise signals, which appear as common-mode ...

Page 15

OUTLINE DIMENSIONS 0.400 (10.16) 0.365 (9.27) 0.355 (9.02 0.280 (7.11) 0.250 (6.35) 1 0.240 (6.10) 4 PIN 1 0.100 (2.54) BSC 0.060 (1.52) 0.210 MAX (5.33) MAX 0.015 0.150 (3.81) (0.38) 0.015 (0.38) MIN 0.130 (3.30) GAUGE PLANE ...

Page 16

... ADM489AN −40°C to +85°C ADM489ANZ 1 −40°C to +85°C ADM489AR −40°C to +85°C ADM489AR-REEL −40°C to +85°C ADM489AR-REEL7 −40°C to +85°C 1 ADM489ARZ −40°C to +85°C 1 ADM489ARZ-REEL −40°C to +85°C 1 ADM489ARZ-REEL7 −40°C to +85°C ADM489ARU − ...

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