ISL4489EIBZ Intersil, ISL4489EIBZ Datasheet

ISL4489EIBZ

Manufacturer Part Number

ISL4489EIBZ

Description

TRANSCEIVER RS-485/422 14-SOIC

Manufacturer

Intersil

Type

Transceiverr

Datasheet

1.ISL4489EIBZ.pdf (12 pages)

Specifications of ISL4489EIBZ

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

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Meier Automation Equipment Co., Limited

Part Number:

ISL4489EIBZ

Manufacturer:

INTERSIL

Quantity:

20 000

Current page: 1 of 12
Download datasheet (418Kb)

Low Power, High Speed and Slew Rate

Limited, Full Duplex, RS-485/RS-422

Transceivers

The ISL4489E, ISL4491E are ESD protected, “fractional”

unit load, BiCMOS, 5V powered, single transceivers that

meet both the RS-485 and RS-422 standards for balanced

communication. Each driver output and receiver input is

protected against ±15kV ESD strikes, without latch-up.

Unlike competitive versions, these Intersil devices are

specified for 10% tolerance supplies (4.5V to 5.5V).

Rx inputs and Tx outputs present a “1/8 unit load” to the

RS-485 bus, which allows a total of 256 transmitters and

receivers on the network for large node count systems.

These devices are configured for full duplex (separate Rx

input and Tx output pins) applications, so they are ideal for

RS-422 networks requiring high ESD tolerance on the bus

pins.

The ISL4489E utilizes a slew rate limited driver which

reduces EMI, and minimizes reflections from improperly

terminated transmission lines, or unterminated stubs in

multidrop and multipoint applications.

Data rates up to 15Mbps are achievable by using the

ISL4491E, which features higher slew rates.

Receiver (Rx) inputs feature a “fail-safe if open” design,

which ensures a logic high Rx output if Rx inputs are floating.

Driver (Tx) outputs are short circuit protected, even for

voltages exceeding the power supply voltage. Additionally,

on-chip thermal shutdown circuitry disables the Tx outputs to

prevent damage if power dissipation becomes excessive.

NUMBER

ISL4489E

ISL4491E

15kV ESD Protected, 1/8 Unit Load, 5V,

PART

HALF/FULL

DUPLEX

Full

HIGH ESD?

Yes

Data Sheet

ALLOWED ON BUS

NO. OF DEVICES

TABLE 1. SUMMARY OF FEATURES

256

1-888-INTERSIL or 321-724-7143

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

DATA RATE

(Mbps)

0.25

Features

• Pb-free Available as an Option (RoHS Compliant)

• RS-485 I/O Pin ESD Protection

• 1/8 Unit Load Allows up to 256 Devices on the Bus

• High Data Rates (ISL4491E) . . . . . . . . . . . up to 15Mbps

• Slew Rate Limited Version for Error Free Data

• Very Low Quiescent Current:

• -7V to +12V Common Mode Input Voltage Range

• Three-State Rx and Tx Outputs

• Full Duplex Pinout

• Operates from a Single +5V Supply (10% Tolerance)

• Current Limiting and Thermal Shutdown for driver

Applications

• Factory Automation

• Security Networks

• Building Environmental Control Systems

• Industrial/Process Control Networks

• Level Translators (e.g., RS-232 to RS-422)

• RS-232 “Extension Cords”

(See Ordering Info)

- Class 3 ESD Level on all Other Pins . . . . . . >7kV HBM

Transmission (ISL4489E)

- 140

- 370

Overload Protection

SLEW-RATE

LIMITED?

All other trademarks mentioned are the property of their respective owners.

April 28, 2006

A (ISL4489E)

A (ISL4491E)

Yes

Intersil (and design) is a registered trademark of Intersil Americas Inc.

DRIVER ENABLE?

ISL4489E, ISL4491E

RECEIVER/

Yes

. . . . . . . . . . . . . ±

QUIESCENT

140

370

(μA)

FN6074.3

15kV HBM

COUNT

Related parts for ISL4489EIBZ

ISL4489EIBZ Summary of contents

Page 1

... All other trademarks mentioned are the property of their respective owners. ISL4489E, ISL4491E FN6074 ± 15kV HBM RECEIVER/ QUIESCENT DRIVER ENABLE? I (μA) CC Yes 140 Yes 370 Intersil (and design registered trademark of Intersil Americas Inc. Copyright © Intersil Americas Inc. 2004, 2006. All Rights Reserved. PIN COUNT 14 14 ...

Page 2

... Ordering Information PART PART TEMP. NUMBER MARKING RANGE (°C) ISL4489EIB ISL4489EIB - ISL4489EIBZ 4489EIBZ - (Note) ISL4491EIB ISL4491EIB - ISL4491EIBZ 4491EIBZ - (Note) Add “-T” suffix for tape and reel. NOTE: Intersil Pb-free plus anneal products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin plate termination finish, which are RoHS compliant and compatible with both SnPb and Pb-free soldering operations ...

Page 3

Typical Operating Circuit +5V + 0.1µ GND ISL4489E, ISL4491E ISL4489E, ISL4491E T +5V + 0.1µF ...

Page 4

Absolute Maximum Ratings V to Ground ...

Page 5

Electrical Specifications Test Conditions: V Note 2 (Continued) PARAMETER SYMBOL SWITCHING CHARACTERISTICS (ISL4489E) Driver Input to Output Delay t PLH Driver Output Skew t SKEW Driver Differential Rise or Fall Time t R Driver Enable to Output High t Driver ...

Page 6

Test Circuits and Waveforms SIGNAL GENERATOR FIGURE 2A. TEST CIRCUIT FIGURE 2. DRIVER PROPAGATION DELAY AND DIFFERENTIAL TRANSITION TIMES 6 ISL4489E, ISL4491E FIGURE ...

Page 7

Test Circuits and Waveforms SIGNAL Y GENERATOR C L PARAMETER OUTPUT FIGURE 3A. TEST CIRCUIT RE B +1.5V RO ...

Page 8

Application Information RS-485 and RS-422 are differential (balanced) data transmission standards for use in long haul or noisy environments. RS-422 is a subset of RS-485, so RS-485 transceivers are also RS-422 compliant. RS-422 is a point- to-multipoint (multidrop) standard, which ...

Page 9

ESD Protection All pins on these devices include class 3 Human Body Model (HBM) ESD protection structures, but the RS-485 pins (driver outputs and receiver inputs) incorporate advanced structures allowing them to survive ESD events in excess of ±15kV HBM. ...

Page 10

Typical Performance Curves 750 700 650 600 550 500 450 -40 0 -25 25 TEMPERATURE (°C) FIGURE 10. DRIVER PROPAGATION DELAY vs TEMPERATURE (ISL4489E PLHY 22 t PLHZ PHLY 16 -40 -25 ...

Page 11

Typical Performance Curves R DIFF TIME (20ns/DIV) FIGURE 16. DRIVER AND RECEIVER WAVEFORMS, LOW TO HIGH (ISL4491E) Die Characteristics SUBSTRATE POTENTIAL (POWERED UP): GND TRANSISTOR COUNT: 518 PROCESS: Si ...

Page 12

... Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use ...

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