ADM3071EARZ Analog Devices Inc, ADM3071EARZ Datasheet

IC TXRX RS-485 3.3V FD 8-SOIC

ADM3071EARZ

Manufacturer Part Number
ADM3071EARZ
Description
IC TXRX RS-485 3.3V FD 8-SOIC
Manufacturer
Analog Devices Inc
Type
Transceiverr
Datasheet
1.ADM3075EARZ.pdf (20 pages)

Specifications of ADM3071EARZ

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
Transceiver
No. Of Drivers
1
Supply Voltage Range
2.97V To 3.63V
Driver Case Style
SOIC
No. Of Pins
8
Operating Temperature Range
-40°C To +85°C
Svhc
No SVHC (18-Jun-2010)
Package
RoHS Compliant
Interface Type
RS422, RS485
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

Available stocks

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Manufacturer
Quantity
Price
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Part Number:
ADM3071EARZ
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12 000
Company:
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FEATURES
TIA/EIA RS-485/RS-422 compliant
±15 kV ESD protection on RS-485 input/output pins
Data rates
Half- and full-duplex options
True fail-safe receiver inputs
Up to 256 nodes on the bus
−40°C to +125°C temperature option
Hot-swap input structure on DE and RE pins
Reduced slew rates for low EMI
Low power shutdown current (all except ADM3071E/
Outputs high-Z when disabled or powered off
Common-mode input range: −7 V to +12 V
Thermal shutdown and short-circuit protection
8-lead and 14-lead narrow SOIC packages
APPLICATIONS
Power/energy metering
Industrial control
Lighting systems
Telecommunications
Security systems
Instrumentation
GENERAL DESCRIPTION
The ADM307xE are 3.3 V, low power data transceivers with
±15 kV ESD protection suitable for full- and half-duplex
communication on multipoint bus transmission lines. They
are designed for balanced data transmission, and they comply
with TIA/EIA standards: RS-485 and RS-422.
The devices have a ⅛ unit load receiver input impedance, which
allows up to 256 transceivers on a bus. Because only one driver
should be enabled at any time, the output of a disabled or powered-
down driver is tristated to avoid overloading the bus.
The receiver inputs have a true fail-safe feature, which eliminates
the need for external bias resistors and ensures a logic high
output level when the inputs are open or shorted. This guar-
antees that the receiver outputs are in a known state before
communication begins and when communication ceases.
Rev. E
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.
ADM3070E/ADM3071E/ADM3072E: 250 kbps
ADM3073E/ADM3074E/ADM3075E: 500 kbps
ADM3076E/ADM3077E/ADM3078E: 16 Mbps
ADM3074E/ADM3077E)
ADM3070E/ADM3071E/ADM3072E/ADM3073E/ADM3074E/ADM3075E/ADM3076E/ADM3077E/ADM3078E
Full-Duplex, RS-485/RS-422 Transceivers
3.3 V, ±15 kV ESD-Protected, Half- and
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
FUNCTIONAL BLOCK DIAGRAMS
©2006–2009 Analog Devices, Inc. All rights reserved.
RO
RO
RE
DE
RO
RE
DE
DI
DI
DI
ADM3070E/
ADM3073E/
ADM3076E
ADM3071E/
ADM3074E/
ADM3072E/
ADM3075E/
ADM3077E
ADM3078E
Figure 1.
Figure 2.
Figure 3.
GND
GND
GND
D
D
D
V
V
V
R
CC
R
CC
R
CC
A
A
B
Z
Y
A
Z
Y
www.analog.com

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ADM3071EARZ Summary of contents

Page 1

ADM3070E/ADM3071E/ADM3072E/ADM3073E/ADM3074E/ADM3075E/ADM3076E/ADM3077E/ADM3078E FEATURES TIA/EIA RS-485/RS-422 compliant ±15 kV ESD protection on RS-485 input/output pins Data rates ADM3070E/ADM3071E/ADM3072E: 250 kbps ADM3073E/ADM3074E/ADM3075E: 500 kbps ADM3076E/ADM3077E/ADM3078E: 16 Mbps Half- and full-duplex options True fail-safe receiver inputs Up to 256 nodes on the bus −40°C ...

Page 2

ADM3070E/ADM3071E/ADM3072E/ADM3073E/ADM3074E/ADM3075E/ADM3076E/ADM3077E/ADM3078E TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 General Description ......................................................................... 1 Functional Block Diagrams ............................................................. 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 4 Timing Specifications— ADM3070E/ADM3071E/ADM3072E ....................................... 5 Timing Specifications— ADM3073E/ADM3074E/ADM3075E ....................................... 6 Timing Specifications— ADM3076E/ADM3077E/ADM3078E ....................................... ...

Page 3

ADM3070E/ADM3071E/ADM3072E/ADM3073E/ADM3074E/ADM3075E/ADM3076E/ADM3077E/ADM3078E The driver outputs of the 250 kbps and 500 kbps devices are slew rate limited to reduce EMI and data errors caused by reflections from improperly terminated buses. Excessive power dissipation caused by bus contention or by output shorting ...

Page 4

ADM3070E/ADM3071E/ADM3072E/ADM3073E/ADM3074E/ADM3075E/ADM3076E/ADM3077E/ADM3078E SPECIFICATIONS V = 3.3 V ± 10 unless otherwise noted MIN MAX Table 2. ADM3070E/ADM3071E/ADM3072E/ADM3073E/ADM3074E/ADM3075E/ADM3076E/ADM3077E/ADM3078E Parameter DRIVER Differential Outputs Differential Output Voltage Δ|V | for Complementary Output States OD Common-Mode Output ...

Page 5

ADM3070E/ADM3071E/ADM3072E/ADM3073E/ADM3074E/ADM3075E/ADM3076E/ADM3077E/ADM3078E TIMING SPECIFICATIONS—ADM3070E/ADM3071E/ADM3072E V = 3.3 V ± 10 unless otherwise noted MIN MAX Table 3. Parameter DRIVER Maximum Data Rate Propagation Delay, Low-to-High Level Propagation Delay, High-to-Low Level Rise Time/Fall Time ...

Page 6

ADM3070E/ADM3071E/ADM3072E/ADM3073E/ADM3074E/ADM3075E/ADM3076E/ADM3077E/ADM3078E TIMING SPECIFICATIONS—ADM3073E/ADM3074E/ADM3075E V = 3.3 V ± 10 unless otherwise noted MIN MAX Table 4. Parameter DRIVER Maximum Data Rate Propagation Delay, Low-to-High Level Propagation Delay, High-to-Low Level Rise Time/Fall Time ...

Page 7

ADM3070E/ADM3071E/ADM3072E/ADM3073E/ADM3074E/ADM3075E/ADM3076E/ADM3077E/ADM3078E TIMING SPECIFICATIONS—ADM3076E/ADM3077E/ADM3078E V = 3.3 V ± 10 unless otherwise noted MIN MAX Table 5. Parameter DRIVER Maximum Data Rate Propagation Delay, Low-to-High Level Propagation Delay, High-to-Low Level Rise Time/Fall Time ...

Page 8

ADM3070E/ADM3071E/ADM3072E/ADM3073E/ADM3074E/ADM3075E/ADM3076E/ADM3077E/ADM3078E ABSOLUTE MAXIMUM RATINGS T = 25°C, unless otherwise noted. A Table 6. Parameter V to GND CC Digital Input/Output Voltage (DE, RE, DI) Receiver Output Voltage (RO) Driver Output ( Z)/Receiver Input (A, B) Voltage Driver Output ...

Page 9

ADM3070E/ADM3071E/ADM3072E/ADM3073E/ADM3074E/ADM3075E/ADM3076E/ADM3077E/ADM3078E PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS ADM3070E ADM3073E ADM3076E TOP VIEW (Not to Scale) GND GND ...

Page 10

ADM3070E/ADM3071E/ADM3072E/ADM3073E/ADM3074E/ADM3075E/ADM3076E/ADM3077E/ADM3078E TEST CIRCUITS AND SWITCHING CHARACTERISTICS Figure 7. Driver DC Test Load Figure 8. Driver Timing Test Circuit V ...

Page 11

ADM3070E/ADM3071E/ADM3072E/ADM3073E/ADM3074E/ADM3075E/ADM3076E/ADM3077E/ADM3078E S1 OPEN S2 CLOSED S3 = +1. RZH RZH(SHDN OPEN S2 CLOSED S3 = +1.5V RE 1.5V t RHZ RO +1.5V S3 1kΩ –1. 15pF GENERATOR 50Ω 3V ...

Page 12

ADM3070E/ADM3071E/ADM3072E/ADM3073E/ADM3074E/ADM3075E/ADM3076E/ADM3077E/ADM3078E TYPICAL PERFORMANCE CHARACTERISTICS 1.2 1.1 1.0 0.9 0.8 0.7 0.6 0.5 –40 – TEMPERATURE (°C) Figure 15. Supply Current vs. Temperature –18 –16 –14 –12 –10 –8 –6 –4 – 0.5 1.0 1.5 2.0 OUTPUT ...

Page 13

ADM3070E/ADM3071E/ADM3072E/ADM3073E/ADM3074E/ADM3075E/ADM3076E/ADM3077E/ADM3078E 2.6 2.5 2.4 2.3 2.2 2.1 2.0 1.9 1.8 1.7 1.6 –50 – TEMPERATURE (°C) Figure 21. Driver Differential Output Voltage vs. Temperature 120 100 –7 –6 –5 –4 –3 ...

Page 14

ADM3070E/ADM3071E/ADM3072E/ADM3073E/ADM3074E/ADM3075E/ADM3076E/ADM3077E/ADM3078E –50 – TEMPERATURE (°C) Figure 27. ADM3076E/ADM3077E/ADM3078E Driver Propagation Delay vs. Temperature (16 Mbps –50 – TEMPERATURE ...

Page 15

ADM3070E/ADM3071E/ADM3072E/ADM3073E/ADM3074E/ADM3075E/ADM3076E/ADM3077E/ADM3078E CIRCUIT DESCRIPTION The ADM307xE series are high speed transceivers for RS­485 and RS-422 communications. Each device contains one driver and one receiver. All devices feature fail-safe circuitry, which guarantees a logic high receiver output when the receiver inputs are ...

Page 16

ADM3070E/ADM3071E/ADM3072E/ADM3073E/ADM3074E/ADM3075E/ADM3076E/ADM3077E/ADM3078E HOT-SWAP CAPABILITY (ALL EXCEPT ADM3071E/ADM3074E/ADM3077E) Hot-Swap Inputs When a circuit board is inserted into a hot (or powered) back- plane, differential disturbances to the data bus can lead to data errors. During this period, processor logic output drivers are ...

Page 17

ADM3070E/ADM3071E/ADM3072E/ADM3073E/ADM3074E/ADM3075E/ADM3076E/ADM3077E/ADM3078E LOW POWER SHUTDOWN MODE (ALL EXCEPT ADM3071E/ADM3074E/ADM3077E) Low power shutdown mode is initiated by bringing both RE high and DE low. In shutdown mode, the device draws less than 1 μA of supply current. RE and DE can be ...

Page 18

ADM3070E/ADM3071E/ADM3072E/ADM3073E/ADM3074E/ADM3075E/ADM3076E/ADM3077E/ADM3078E MASTER ADM3070E/ ADM3073E/ ADM3076E SLAVE ADM3070E/ ADM3073E/ ADM3076E NOTES 1. MAXIMUM NUMBER OF NODES: 256 EQUAL TO THE CHARACTERISTIC IMPEDANCE OF THE CABLE USED. ...

Page 19

ADM3070E/ADM3071E/ADM3072E/ADM3073E/ADM3074E/ADM3075E/ADM3076E/ADM3077E/ADM3078E 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 ...

Page 20

... ADM3070EARZ-REEL7 −40°C to +85°C 1 ADM3070EYRZ −40°C to +125°C 1 ADM3070EYRZ-REEL7 −40°C to +125°C 1 ADM3071EARZ −40°C to +85°C ADM3071EARZ-REEL7 1 −40°C to +85°C ADM3071EYRZ 1 −40°C to +125°C 1 ADM3071EYRZ-REEL7 −40°C to +125°C 1 ADM3072EARZ −40°C to +85°C 1 ADM3072EARZ-REEL7 − ...

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