ADM1490EBRMZ-REEL7 Analog Devices Inc, ADM1490EBRMZ-REEL7 Datasheet

ADM1490EBRMZ-REEL7

Manufacturer Part Number

ADM1490EBRMZ-REEL7

Description

5V Full Duplex RS-485 Tranceiver I.C.

Manufacturer

Analog Devices Inc

Type

Transceiverr

Datasheet

1.ADM1490EBRZ-REEL7.pdf (16 pages)

Specifications of ADM1490EBRMZ-REEL7

Number Of Drivers/receivers

1/1

Protocol

RS422, RS485

Voltage - Supply

4.75 V ~ 5.25 V

Mounting Type

Surface Mount

Package / Case

8-MSOP, Micro8™, 8-uMAX, 8-uSOP,

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Current page: 1 of 16
Download datasheet (355Kb)

FEATURES

RS-485/RS-422 full-duplex transceiver for high speed

16 Mbps data rate

±8 kV ESD protection on RS-485 input/output pins

Complies with ANSI/TIA/EIA-485-A-1998

Open circuit fail-safe

Suitable for 5 V power supply applications

32 nodes on the bus (1 unit load)

Thermal shutdown protection

Operating temperature range: −40°C to +85°C

ADM1490E packages

ADM1491E packages

APPLICATIONS

RS-485/RS-422 interfaces

Industrial field networks

High data rate motor control

Multipoint data transmission systems

Single-ended-to-differential signal conversion

GENERAL DESCRIPTION

The

with ±8 kV ESD protection and are suitable for high speed, full-

duplex communication on multipoint transmission lines. In

particular, the ADM1490E/ADM1491E are designed for use in

motor control applications requiring communications at data

rates up to 16 Mbps.

The ADM1490E/ADM1491E are designed for balanced trans-

mission lines and comply with TIA/EIA-485-A-98. The devices

each have a 12 kΩ receiver input impedance for unit load RS-485

operation, allowing up to 32 nodes on the bus.

The differential transmitter outputs and receiver inputs feature

electrostatic discharge circuitry that provides protection to ±8 kV

using the human body model (HBM).

The ADM1490E/ADM1491E operate from a single 5 V power

supply. Excessive power dissipation caused by bus contention

or output shorting is prevented by short-circuit protection and

thermal circuitry. Short-circuit protection circuits limit the

Rev. C

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.

motor control applications

Narrow body, 8-lead SOIC

8-lead MSOP

Narrow-body, 14-lead SOIC

10-lead MSOP

ADM1490E/ADM1491E

are RS-485/RS-422 transceivers

Full-Duplex 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

maximum output current to ±250 mA during fault conditions.

A thermal shutdown circuit senses if the die temperature rises

above 150°C and forces the driver outputs into a high impedance

state under this condition.

The receiver of the ADM1490E/ADM1491E contains a fail-safe

feature that results in a logic high output state if the inputs are

unconnected (floating).

The ADM1490E/ADM1491E feature extremely fast and closely

matched switching times. Minimal driver propagation delays

permit transmission at data rates up to 16 Mbps, and low skew

minimizes EMI interference.

The ADM1490E/ADM1491E are fully specified over the

commercial and industrial temperature ranges. The ADM1490E

is available in two packages: a narrow body, 8-lead SOIC and an

8-lead MSOP. The ADM1491E is also available in two packages:

a narrow body, 14-lead SOIC and a 10-lead MSOP.

FUNCTIONAL BLOCK DIAGRAMS

16 Mbps, ESD Protected,

ADM1490E/ADM1491E

ADM1491E

ADM1490E

Figure 1.

Figure 2.

GND

www.analog.com

Related parts for ADM1490EBRMZ-REEL7

ADM1490EBRMZ-REEL7 Summary of contents

Page 1

FEATURES RS-485/RS-422 full-duplex transceiver for high speed motor control applications 16 Mbps data rate ±8 kV ESD protection on RS-485 input/output pins Complies with ANSI/TIA/EIA-485-A-1998 Open circuit fail-safe Suitable for 5 V power supply applications 32 nodes on the bus ...

Page 2

ADM1490E/ADM1491E TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 Functional Block Diagrams ............................................................. 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 3 Timing Specifications .................................................................. 4 Absolute Maximum Ratings ............................................................ 5 Thermal Resistance ...................................................................... 5 ESD ...

Page 3

SPECIFICATIONS 4.75 V ≤ V ≤ 5.25 V; all minimum/maximum specifications apply over the entire recommended operation range, unless otherwise CC noted. All typical specifications are at T Table 1. Parameter SUPPLY CURRENT Outputs Enabled Outputs Disabled DRIVER Differential Outputs ...

Page 4

ADM1490E/ADM1491E TIMING SPECIFICATIONS T = −40°C to +85°C. A Table 2. Parameter DRIVER Maximum Data Rate Propagation Delay Driver Output Skew Rise Time/Fall Time Enable Time Disable Time RECEIVER Propagation Delay Skew |t − PLH PHL Enable Time ...

Page 5

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

Page 6

ADM1490E/ADM1491E PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS ADM1490E TOP VIEW DI (Not to Scale GND Figure 7. 8-Lead MSOP and 8-Lead SOIC Pin Configuration Table ...

Page 7

TYPICAL PERFORMANCE CHARACTERISTICS 0.25 0.50 0.75 1.00 1.25 OUTPUT VOLTAGE (V) Figure 10. Output Current vs. Receiver Output Low Voltage 0 –5 –10 –15 –20 –25 –30 3.50 3.75 4.00 4.25 ...

Page 8

ADM1490E/ADM1491E 0.5 1.0 1.5 2.0 2.5 OUTPUT VOLTAGE (V) Figure 16. Output Current vs. Driver Output Low Voltage 0 –10 –20 –30 –40 –50 –60 –70 –80 0 0.5 1.0 ...

Page 9

TEST CIRCUITS OD2 Z Figure 21. Driver Voltage Measurements 60Ω OD3 Z Figure 22. Driver Voltage Measurements Figure 23. Driver Propagation Delay ...

Page 10

ADM1490E/ADM1491E THEORY OF OPERATION The ADM1490E/ADM1491E are RS-422/RS-485 transceivers that operate from a single 5 V ± 5% power supply. The ADM1490E/ ADM1491E are intended for balanced data transmission and comply with both TIA/EIA-485-A and TIA/EIA-422-B. Each device contains a ...

Page 11

Table 9. ADM1490E/ADM1491E ESD Test Results ESD Test Method Human Body Model 100% 90% 36.8% 10 Figure 28. Human Body Model ESD Current Waveform Input/Output Pins ±8 kV Rev Page ADM1490E/ADM1491E ...

Page 12

ADM1490E/ADM1491E APPLICATIONS INFORMATION DIFFERENTIAL DATA Differential data transmission reliably transmits data at high rates over long distances and through noisy environments. Differential transmission nullifies the effects of ground shifts and noise signals that appear as common-mode voltages on the line. ...

Page 13

V MASTER ADM1491E A SLAVE ADM1491E R RO NOTES EQUAL TO THE CHARACTERISTIC IMPEDANCE OF THE CABLE. T MAXIMUM NUMBER OF NODES = 32 ...

Page 14

ADM1490E/ADM1491E OUTLINE DIMENSIONS 4.00 (0.1575) 3.80 (0.1496) 0.25 (0.0098) 0.10 (0.0039) COPLANARITY 0.10 IDENTIFIER 8.75 (0.3445) 8.55 (0.3366 6.20 (0.2441) 1 5.80 (0.2283) 7 1.27 (0.0500) BSC 1.75 (0.0689) 1.35 (0.0531) SEATING 0.51 (0.0201) PLANE 0.25 (0.0098) 0.31 ...

Page 15

... Model Range ADM1490EBRZ −40°C to +85°C ADM1490EBRZ-REEL7 −40°C to +85°C ADM1490EBRMZ −40°C to +85°C ADM1490EBRMZ-REEL7 −40°C to +85°C ADM1491EBRZ −40°C to +85°C ADM1491EBRZ-REEL7 −40°C to +85°C ADM1491EBRMZ −40°C to +85°C ADM1491EBRMZ-REEL7 −40°C to +85° RoHS Compliant Part ...

Page 16

Related keywords

ADM1490EBRMZ-REEL7 datasheet
ADM1490EBRMZ-REEL7 data sheet
ADM1490EBRMZ-REEL7 pdf datasheet
ADM1490EBRMZ-REEL7 component
ADM1490EBRMZ-REEL7 part
ADM1490EBRMZ-REEL7 distributor
ADM1490EBRMZ-REEL7 RoHS
ADM1490EBRMZ-REEL7 datasheet download