ISL81483IBZ Intersil, ISL81483IBZ Datasheet

ISL81483IBZ

Manufacturer Part Number

ISL81483IBZ

Description

IC TXRX RS485/422 5V LP 8-SOIC

Manufacturer

Intersil

Type

Transceiverr

Datasheet

1.ISL81483IBZ-T.pdf (13 pages)

Specifications of ISL81483IBZ

Number Of Drivers/receivers

1/1

Protocol

RS422, RS485

Voltage - Supply

4.5 V ~ 5.5 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:

ISL81483IBZ-T

Manufacturer:

Intersil

Quantity:

707

Company:

BOSTOCK HK LIMITED

Part Number:

ISL81483IBZ-T

Manufacturer:

Company:

Meier Automation Equipment Co., Limited

Part Number:

ISL81483IBZ-T

Manufacturer:

INTERSIL

Quantity:

20 000

Company:

Amily Shenzhen XNWY Technology Co., Ltd

Part Number:

ISL81483IBZ-T

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1/8 Unit Load, 5V, Low Power, High Speed

or Slew Rate Limited, RS-485/RS-422

Transceivers

These Intersil RS-485/RS-422 devices are “fractional” unit

load (UL), BiCMOS, 5V powered, single transceivers that

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

communication. Unlike competitive devices, this Intersil

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

The ISL81483 and ISL81487 present a 1/8 unit load to the

RS-485 bus, which allows up to 256 transceivers on the

network for large node count systems (e.g., process

automation, remote meter reading systems). The 1/4 UL

ISL8487 allows up to 128 transceivers on the bus. In a

remote utility meter reading system, individual (apartments

for example) utility meter readings are routed to a

concentrator via an RS-485 network, so the high allowed

node count minimizes the number of repeaters required to

network all the meters. Data for all meters is then read out

from the concentrator via a single access port, or a wireless

link.

Slew rate limited drivers on the ISL8487 and ISL81483

reduce EMI, and minimize reflections from improperly

terminated transmission lines, or unterminated stubs in

multidrop and multipoint applications. Data rates up to

250kbps are achievable with these devices.

Data rates up to 5Mbps are achievable by using the

ISL81487, 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.

These half duplex devices multiplex the Rx inputs and Tx

outputs to allow transceivers with Rx and Tx disable

functions in 8 lead packages.

NUMBER

ISL81483

ISL81487

ISL8487

PART

HALF/FULL

DUPLEX

Half

ALLOWED ON BUS

NO. OF DEVICES

128

256

Data Sheet

DATA RATE

TABLE 1. SUMMARY OF FEATURES

(Mbps)

0.25

1-888-INTERSIL or 1-888-468-3774

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

SLEW-RATE

LIMITED?

Yes

Features

• Fractional Unit Load Allows up to 256 Devices on the Bus

• Specified for 10% Tolerance Supplies

• Class 3 ESD Protection (HBM) on all Pins. . . . . . . . >7kV

• High Data Rate Version (ISL81487) . . . . . . . up to 5Mbps

• Slew Rate Limited Versions for Error Free Data

• Low Current Shutdown Mode (Except ISL81487) . . 0.5

• Low Quiescent Supply Current:

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

• Three State Rx and Tx Outputs

• 30ns Propagation Delays, 5ns Skew (ISL81487)

• Half Duplex Pinouts

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

• Current Limiting and Thermal Shutdown for Driver

• Drop-In Replacements for: MAX487 (ISL8487); MAX1483

• Pb-Free Plus Anneal Available (RoHS Compliant)

Applications

• High Node Count Networks

• Automated Utility Meter Reading Systems

• Factory Automation

• Security Networks

• Building Environmental Control Systems

• Industrial/Process Control Networks

Transmission (ISL8487, ISL81483) . . . . . . .up to 250kbps

- ISL8487, ISL81483. . . . . . . . . . . . . . . . . . 145

- ISL81487 . . . . . . . . . . . . . . . . . . . . . . . . . 420

Overload Protection

(ISL81483); MAX1487, LMS1487 (ISL81487)

DRIVER ENABLE?

ISL8487, ISL81483, ISL81487

RECEIVER/

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

July 31, 2006

Yes

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

QUIESCENT

120

350

(μA)

SHUTDOWN?

LOW POWER

Yes

FN6050.7

A (Max.)

COUNT

Related parts for ISL81483IBZ

ISL81483IBZ Summary of contents

Page 1

... CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. | 1-888-INTERSIL or 1-888-468-3774 Intersil (and design registered trademark of Intersil Americas Inc. Copyright © Intersil Americas Inc. 2004, 2006. All Rights Reserved All other trademarks mentioned are the property of their respective owners. ...

Page 2

... Ordering Information PART NO. PART MARKING ISL8487IB 8487IB ISL8487IBZ (Note) 8487IBZ ISL8487IP ISL8487IP ISL8487IPZ (Note) 8487IPZ ISL81483IB 81483IB ISL81483IBZ (Note) 81483IBZ ISL81483IP ISL81483IP ISL81483IPZ (Note) 81483IPZ ISL81487IB 81487IB ISL81487IBZ (Note) 81487IBZ ISL81487IP ISL81487IP ISL81487IPZ (Note) 81487IPZ *SOIC also available in Tape and Reel; Add “-T” to suffix. ...

Page 3

Pin Descriptions PIN RO Receiver output > least 0.2V high < 0.2V or more low High if A and B are unconnected (floating). RE Receiver ...

Page 4

Absolute Maximum Ratings V to Ground ...

Page 5

Electrical Specifications Test Conditions: V (Note 2) (Continued) PARAMETER SYMBOL Receiver Input Resistance R No-Load Supply Current, (Note 3) I Shutdown Supply Current I SHDN Driver Short-Circuit Current, I OSD1 V = High or Low O Receiver Short-Circuit Current I ...

Page 6

Electrical Specifications Test Conditions: V (Note 2) (Continued) PARAMETER SYMBOL Driver Enable from Shutdown to t ZH(SHDN) Output High Driver Enable from Shutdown to t ZL(SHDN) Output Low Receiver Enable from Shutdown to t ZH(SHDN) Output High Receiver Enable from ...

Page 7

Test Circuits and Waveforms SIGNAL GENERATOR FIGURE 2A. TEST CIRCUIT FIGURE 2. DRIVER PROPAGATION DELAY AND DIFFERENTIAL TRANSITION TIMES SIGNAL Y GENERATOR C L (SHDN) for ISL8487 and ...

Page 8

Test Circuits and Waveforms SIGNAL A GENERATOR (SHDN) for ISL8487 and ISL81483 only. PARAMETER (Note (Note (Note 7) 0 ZH(SHDN) ...

Page 9

Twisted pair is the cable of choice for RS-485/RS-422 networks. Twisted pair cables tend to pick up noise and other electromagnetically induced voltages as common mode ...

Page 10

Typical Performance Curves 160 140 120 LOW 100 -20 -40 -60 ISL81487E -80 ISL8487E, ISL81487L -100 -120 - OUTPUT VOLTAGE (V) FIGURE 8. DRIVER OUTPUT ...

Page 11

Typical Performance Curves R DIFF B A TIME (400ns/DIV) FIGURE 14. DRIVER AND RECEIVER WAVEFORMS, LOW TO HIGH (ISL8487, ISL81483) R DIFF B A/Y ...

Page 12

Dual-In-Line Plastic Packages (PDIP INDEX N/2 AREA -B- -A- D BASE PLANE -C- SEATING PLANE 0.010 (0.25 NOTES: 1. Controlling Dimensions: INCH. In case of conflict between ...

Page 13

... 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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