ISL4485EIB Intersil, ISL4485EIB Datasheet

IC TXRX RS-485/422 5V ESD 8-SOIC

ISL4485EIB

Manufacturer Part Number
ISL4485EIB
Description
IC TXRX RS-485/422 5V ESD 8-SOIC
Manufacturer
Intersil
Type
Transceiverr
Datasheet

Specifications of ISL4485EIB

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
Contains lead / RoHS non-compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ISL4485EIB
Manufacturer:
Intersil
Quantity:
220
Part Number:
ISL4485EIBZ
Manufacturer:
INTERSIL
Quantity:
20 000
Part Number:
ISL4485EIBZ-T
Manufacturer:
INTERSIL
Quantity:
20 000
±
Power, RS-485/RS-422 Transceiver
The Intersil ISL4485E is a high speed, BiCMOS 5V
powered, single transceiver that meets both the RS-485 and
RS-422 standards for balanced communication. Each driver
output/receiver input is protected against ±15kV ESD
strikes, without latch-up. Unlike competitive devices, this
Intersil device is specified for 10% tolerance supplies (4.5V
to 5.5V).
The excellent differential output voltage coupled with high
drive-current output stages allow 20Mbps operation over
twisted pair networks up to 450 feet in length. The 25kΩ
receiver input resistance presents a “single unit load” to the
RS-485 bus, allowing up to 32 transceivers on the network.
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.
The half duplex configuration multiplexes the Rx inputs and
Tx outputs to allow transceivers with Rx and Tx disable
functions in 8 lead packages.
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.
ISL4485EIB
(4485EIB)
ISL4485EIBZ
(4485EIBZ)
(See Note)
ISL4485EIB-T
(4485EIB)
ISL4485EIBZ-T
(4485EIBZ)
(See Note)
15kV ESD Protected, 20Mbps, 5V, Low
PART NO.
(BRAND)
RANGE (
-40 to 85
-40 to 85
-40 to 85
-40 to 85
TEMP.
o
C)
®
Tape & Reel
Tape & Reel
(Pb-free)
8 Ld SOIC
8 Ld SOIC
(Pb-free)
8 Ld SOIC
8 Ld SOIC
1
PACKAGE
Data Sheet
M8.15
M8.15
M8.15
M8.15
PKG. DWG. #
1-888-INTERSIL or 321-724-7143
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
Features
• Pb-Free Available (RoHS Compliant)
• High Data Rates. . . . . . . . . . . . . . . . . . . . . up to 20Mbps
• RS-485 I/O Pin ESD Protection . . . . . . . . . .
• Operates from a Single +5V Supply (10% Tolerance)
• 1 Unit Load Allows up to 32 Devices on the Bus
• Low Quiescent Current . . . . . . . . . . . . . . . . . . . . . 700
• -7V to +12V Common Mode Input Voltage Range
• Three State Rx and Tx Outputs
• 30ns Propagation Delays, 2ns Skew
• Current Limiting and Thermal Shutdown for driver
Applications
• SCSI “Fast 20” Drivers and Receivers
• Data Loggers
• Security Networks
• Building Environmental Control Systems
• Industrial/Process Control Networks
• Level Translators
Pinout
- Class 3 ESD Level on all Other Pins . . . . . . >7kV HBM
Overload Protection
All other trademarks mentioned are the property of their respective owners.
April 21, 2005
|
Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright © Intersil Americas Inc. 2004, 2005. All Rights Reserved.
RO
RE
DE
DI
1
2
3
4
ISL4485E (SOIC)
TOP VIEW
R
D
8
7
6
5
V
B / Z
A / Y
GND
ISL4485E
CC
FN6049.3
±
15kV HBM
µ
A

Related parts for ISL4485EIB

ISL4485EIB Summary of contents

Page 1

... Ld SOIC (4485EIBZ) (Pb-free) (See Note) ISL4485EIB-T - SOIC (4485EIB) Tape & Reel ISL4485EIBZ-T - SOIC (4485EIBZ) Tape & Reel (See Note) (Pb-free) 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 ...

Page 2

Truth Tables TRANSMITTING INPUTS Pin Descriptions PIN RO Receiver output > least 0.2V high < 0.2V or ...

Page 3

... Operating Conditions Temperature Range ISL4485EIB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40 CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. ...

Page 4

Electrical Specifications Test Conditions: V Typicals are at V PARAMETER SYMBOL SWITCHING CHARACTERISTICS 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 5

Test Circuits and Waveforms SIGNAL GENERATOR FIGURE 2A. TEST CIRCUIT FIGURE 2. DRIVER PROPAGATION DELAY AND DIFFERENTIAL TRANSITION TIMES SIGNAL Y GENERATOR C L PARAMETER OUTPUT RE t ...

Page 6

Test Circuits and Waveforms 60Ω SIGNAL GENERATOR FIGURE 4A. TEST CIRCUIT RE B +1. SIGNAL GENERATOR FIGURE 5A. TEST CIRCUIT SIGNAL A GENERATOR PARAMETER DE t ...

Page 7

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 8

If the contention persists, the thermal shutdown / reenable cycle repeats until the fault is cleared. Receivers stay operational during thermal shutdown. ESD Protection All pins on these interface devices include class 3 Human Body ...

Page 9

Typical Performance Curves DIFFERENTIAL OUTPUT VOLTAGE (V) FIGURE 11. DRIVER OUTPUT CURRENT vs DIFFERENTIAL OUTPUT VOLTAGE PHLY t PHLZ 30 t PLHY 25 25 ...

Page 10

Typical Performance Curves R DIFF TIME (10ns/DIV) FIGURE 15. DRIVER AND RECEIVER WAVEFORMS, LOW TO HIGH -100 -120 FIGURE 17. DRIVER OUTPUT CURRENT vs SHORT ...

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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