IC TXRX RS485/422 5V HS 8-MSOP

ISL81486IU

Manufacturer Part NumberISL81486IU
DescriptionIC TXRX RS485/422 5V HS 8-MSOP
ManufacturerIntersil
TypeTransceiver
ISL81486IU datasheet
 


Specifications of ISL81486IU

Number Of Drivers/receivers1/1ProtocolRS422, RS485
Voltage - Supply4.5 V ~ 5.5 VMounting TypeSurface Mount
Package / Case8-MSOP, Micro8™, 8-uMAX, 8-uSOP,Lead Free Status / RoHS StatusContains lead / RoHS non-compliant
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Data Sheet
5V, Ultra High Speed, PROFIBUS®,
RS-485/RS-422 Transceivers
The Intersil ISL4486 and ISL81486 are BiCMOS, 5V
powered, single transceivers that meet both the RS-485 and
RS-422 standards for balanced communication, and feature
the larger output voltage and higher data rate - up to
40Mbps - required by high speed PROFIBUS applications.
Unlike competitive products, these Intersil devices are
specified for 10% tolerance supplies (4.5V to 5.5V) and
deliver at least a 2.3V differential output voltage over this
supply range. At the 5% tolerance specified by many
competitors, the ISL4486 delivers an unsurpassed 2.5V
differential signal into a 54Ω total load. This translates into
longer reach, or better data integrity, at the exceptional
40Mbps data rate.
SCSI applications benefit from the ISL4486’s low receiver
and transmitter part-to-part skews, which make it perfect for
high speed parallel applications where large numbers of bits
must be simultaneously captured. The low bit-to-bit skew
eases the timing constraints on the data latching signal.
These devices present a “0.6 unit load” to the RS-485 bus,
which allows up to 50 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.
Ordering Information
TEMP.
PART NO. (BRAND)
RANGE (°C)
PACKAGE
ISL4486IB (4486IB)
-40 to 85
8 Ld SOIC
ISL4486IBZ (4486IB)
-40 to 85
8 Ld SOIC
(See Note)
(Pb-free)
ISL4486IU (4486)
-40 to 85
8 Ld MSOP
ISL4486IUZ (4486)
-40 to 85
8 Ld MSOP
(See Note)
(Pb-free)
ISL81486IB (81486IB)
-40 to 85
8 Ld SOIC
ISL81486IBZ
-40 to 85
8 Ld SOIC
(81486IB) (See Note)
(Pb-free)
ISL81486IU (1486)
-40 to 85
8 Ld MSOP
ISL81486IUZ (1486)
-40 to 85
8 Ld MSOP
(See Note)
(Pb-free)
*Add “-T” suffix to part number for tape and reel packaging.
NOTE: Intersil Pb-free products employ special Pb-free material sets; molding
compounds/die attach materials and 100% matte tin plate termination finish, which
is 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-020B.
1
August 2004
Features
• Specified for 10% Tolerance Supplies
• High Data Rates
ISL4486 . . . . . . . . . . . . . . . . . . . . . . . . . . up to 40Mbps
ISL81486 . . . . . . . . . . . . . . . . . . . . . . . . . up to 30Mbps
• Large Differential Output Voltage . . . . . . . . . . 3V into 54Ω
• Low Bit-to-Bit (Part-to-Part) Skew for Parallel Applications
• 0.6 Unit Load Allows up to 50 Devices on the Bus
• ISL81486 is a Drop-In Replacement for the ADM1486
• Low Quiescent Current . . . . . . . . . . . . . . . . . . . . . 800
• -7V to +12V Common Mode Input Voltage Range
• Three-State Rx and Tx Outputs
• 14ns (Max) Propagation Delays, 2ns (Max) Skew
• Operates from a Single +5V Supply (10% Tolerance)
• Current Limiting and Thermal Shutdown for driver
Overload Protection
• Pb-free available
Applications
• SCSI “Fast 40” Drivers and Receivers
• PROFIBUS DP and FMS Networks
• Factory Automation
• Field Bus Networks
• Security Networks
• Building Environmental Control Systems
• Industrial/Process Control Networks
PKG.
DWG. #
Pinout
M8.15
M8.15
ISL4486, ISL81486 (SOIC, MSOP)
M8.118
M8.118
RO
RE
M8.15
DE
M8.15
DI
M8.118
M8.118
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
|
1-888-INTERSIL or 321-724-7143
Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright © Intersil Americas Inc. 2004. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
ISL4486, ISL81486
FN6060.2
µ
A
TOP VIEW
1
8
V
CC
R
2
7
B/Z
3
6
A/Y
D
4
5
GND

ISL81486IU Summary of contents

  • Page 1

    ... Ld SOIC (81486IB) (See Note) (Pb-free) ISL81486IU (1486) - MSOP ISL81486IUZ (1486) - MSOP (See Note) (Pb-free) *Add “-T” suffix to part number for tape and reel packaging. NOTE: Intersil Pb-free products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin plate termination finish, which is compatible with both SnPb and Pb-free soldering operations ...

  • Page 2

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

  • Page 3

    Absolute Maximum Ratings V to Ground ...

  • Page 4

    Electrical Specifications Test Conditions: V Note 2 (Continued) PARAMETER SYMBOL Driver Short-Circuit Current, I OSD1 V = High or Low O Receiver Short-Circuit Current I OSR SWITCHING CHARACTERISTICS Driver Input to Output Prop Delay t PLH Prop Delay Delta, Min-to-Max ...

  • Page 5

    Test Circuits and Waveforms FIGURE 1A. V AND SIGNAL GENERATOR FIGURE 2A. TEST CIRCUIT FIGURE 2. DRIVER PROPAGATION DELAY AND DIFFERENTIAL ...

  • Page 6

    Test Circuits and Waveforms 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

    Typical Performance Curves DI = 40Mbps DRIVER+CABLE DELAY (~290ns -1.5 -3 TIME (10ns/DIV) FIGURE 7. ISL4486 DRIVER AND RECEIVER WAVEFORMS DRIVING 200 FEET (61 METERS) OF CAT5 CABLE (DOUBLE TERMINATED WITH ...

  • Page 9

    Typical Performance Curves 54Ω DIFF PHLY t PHLZ 8 7 -40 - TEMPERATURE (°C) FIGURE 13. DRIVER PROPAGATION DELAY vs TEMPERATURE R DIFF A/Y 3 ...

  • Page 10

    Mini Small Outline Plastic Packages (MSOP -B- INDEX 1 2 0.20 (0.008) AREA TOP VIEW 0.25 (0.010) GAUGE PLANE SEATING PLANE - 0.10 (0.004) b -H- - 0.20 (0.008) SIDE VIEW 0.20 ...

  • 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 ...