ISL43485IBZ Intersil, ISL43485IBZ Datasheet

ISL43485IBZ

Manufacturer Part Number

ISL43485IBZ

Description

IC TXRX RS485/422 3.3V LP 8SOIC

Manufacturer

Intersil

Type

Transceiverr

Datasheet

1.ISL43485IBZ.pdf (11 pages)

Specifications of ISL43485IBZ

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)

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

ISL43485IBZ

Manufacturer:

Intersil

Quantity:

686

Company:

Meier Automation Equipment Co., Limited

Part Number:

ISL43485IBZ

Manufacturer:

INTERSIL

Quantity:

20 000

Current page: 1 of 11
Download datasheet (481Kb)

3.3V, Low Power, 30Mbps, RS-485/RS-422

Transceiver

The Intersil ISL43485 is a high speed BiCMOS 3.3V

powered, single transceiver that meets both the RS-485 and

RS-422 standards for balanced communication. Unlike

some competitive devices, this Intersil transceiver is

specified for 10% tolerance supplies (3V to 3.6V).

Data rates up to 30Mbps are achievable by using this

transceiver, which features higher slew rates.

Logic inputs (e.g., DI and DE) accept signals in excess of

5.5V, making them compatible with 5V logic families.

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

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

and the ISL43485 presents a “single unit load” to the RS-485

bus, which allows up to 32 transceivers on the network.

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.

Pinout

ISL43485 (SOIC)

TOP VIEW

Data Sheet

B/Z

A/Y

GND

1-888-INTERSIL or 321-724-7143

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

Features

• High Data Rate. . . . . . . . . . . . . . . . . . . . . . up to 30Mbps

• Operates from a Single +3.3V Supply (10% Tolerance)

• Interoperable with 5V Logic

• Single Unit Load Allows up to 32 Devices on the Bus

• Low Current Shutdown Mode. . . . . . . . . . . . . . . . . . 15nA

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

• Three State Rx and Tx Outputs

• 10ns Propagation Delay, 1ns Skew

• Half Duplex Pinout

• Current Limiting and Thermal Shutdown for driver

• Pb-Free Available (RoHS Compliant)

Applications

• SCSI “Fast 20” Drivers and Receivers

• Factory Automation

• Data Loggers

• Security Networks

• Building Environmental Control Systems

• Industrial/Process Control Networks

• Level Translators

Ordering Information

NOTE: Intersil Pb-free 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. Intersil Pb-free products

are MSL classified at Pb-free peak reflow temperatures that meet or

exceed the Pb-free requirements of IPC/JEDEC J STD-020.

ISL43485IB

(43485IB)

ISL43485IBZ

(43485IB) (Note)

ISL43485IB-T

(43485IB)

ISL43485IBZ-T

(43485IB) (Note)

Overload Protection

PART NO.

(BRAND)

March 15, 2005

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

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

RANGE (°C)

-40 to 85

TEMP.

8 Ld SOIC

8 Ld SOIC (Pb-free)

8 Ld SOIC

Tape and Reel

8 Ld SOIC

Tape and Reel (Pb-free)

PACKAGE

ISL43485

FN6071.1

M8.15

DWG. #

PKG.

Related parts for ISL43485IBZ

ISL43485IBZ Summary of contents

Page 1

... ISL43485IBZ (43485IB) (Note) ISL43485IB-T (43485IB) ISL43485IBZ-T (43485IB) (Note) NOTE: Intersil Pb-free 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. Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020 ...

Page 2

Truth Tables TRANSMITTING INPUTS NOTE: *Shutdown Mode Pin Descriptions PIN RO Receiver output > least 0.2V high; If ...

Page 3

Absolute Maximum Ratings V to Ground ...

Page 4

Electrical Specifications Test Conditions: V Note 2 (Continued) PARAMETER SYMBOL Three-State (high impedance) I OZR Receiver Output Current Receiver Input Resistance R No-Load Supply Current (Note Shutdown Supply Current I SHDN Driver Short-Circuit Current, I OSD1 V ...

Page 5

Electrical Specifications Test Conditions: V Note 2 (Continued) PARAMETER SYMBOL Time to Shutdown t SHDN Receiver Enable from Shutdown to t ZH(SHDN) Output High Receiver Enable from Shutdown to t ZL(SHDN) Output Low NOTES: 2. All currents into device pins ...

Page 6

Test Circuits and Waveforms SIGNAL GENERATOR FIGURE 2A. DIFFERENTIAL TEST CIRCUIT OUT SIGNAL GENERATOR FIGURE 2C. SINGLE ENDED TEST CIRCUIT FIGURE 2. DRIVER DATA RATE, ...

Page 7

Test Circuits and Waveforms RE GND B +1. SIGNAL GENERATOR FIGURE 4A. TEST CIRCUIT FIGURE 4. RECEIVER DATA RATE AND PROPAGATION DELAY RE B GND SIGNAL GENERATOR PARAMETER ...

Page 8

Driver Features The RS-485, RS-422 driver is a differential output device that delivers at least 1.5V across a 54Ω load (RS-485), and at least 2V across a 100Ω load (RS-422) even with V = 3V. The driver features low propagation ...

Page 9

Typical Performance Curves DI = 30Mbps DRIVER+CABLE DELAY (~290ns -1.5 -3 TIME (20ns/DIV) FIGURE 6. DRIVER AND RECEIVER WAVEFORMS DRIVING 200 FEET OF CAT5 CABLE (DOUBLE TERMINATED WITH 120 Ω 110 ...

Page 10

Typical Performance Curves 54Ω DIFF PHLY 9 t PHLZ 8 -40 - TEMPERATURE (°C) FIGURE 12. DRIVER PROPAGATION DELAY vs TEMPERATURE R DIFF ...

Page 11

... 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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