ISL81486 Intersil Corporation, ISL81486 Datasheet

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ISL81486

Manufacturer Part Number
ISL81486
Description
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
Manufacturer
Intersil Corporation
Datasheet

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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
ISL4486IB (4486IB)
ISL4486IB-T (4486IB)
ISL4486IU (4486)
ISL4486IU-T (4486)
ISL81486IB (81486IB)
ISL81486IB-T (81486IB)
ISL81486IU (1486)
ISL81486IU-T (1486)
PART NO. (BRAND)
RANGE (°C)
-40 to 85
-40 to 85
-40 to 85
-40 to 85
-40 to 85
-40 to 85
-40 to 85
-40 to 85
TEMP.
®
1
8 Ld SOIC
8 Ld SOIC
(Tape and Reel)
8 Ld MSOP
8 Ld MSOP
(Tape and Reel)
8 Ld SOIC
8 Ld SOIC
(Tape and Reel)
8 Ld MSOP
8 Ld MSOP
(Tape and Reel)
Data Sheet
PACKAGE
M8.15
M8.15
M8.118
M8.118
M8.15
M8.15
M8.118
M8.118
DWG. #
PKG.
1-888-INTERSIL or 321-724-7143
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
Features
• Specified for 10% Tolerance Supplies
• High Data Rates
• 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
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
Pinout
Overload Protection
ISL4486 . . . . . . . . . . . . . . . . . . . . . . . . . . up to 40Mbps
ISL81486 . . . . . . . . . . . . . . . . . . . . . . . . . up to 30Mbps
All other trademarks mentioned are the property of their respective owners.
|
Intersil (and design) is a registered trademark of Intersil Americas Inc.
April 2004
ISL4486, ISL81486 (SOIC, MSOP)
RO
RE
DE
DI
Copyright © Intersil Americas Inc. 2004. All Rights Reserved
1
2
3
4
ISL4486, ISL81486
TOP VIEW
R
D
8
7
6
5
V
B/Z
A/Y
GND
CC
FN6060.1
µ
A

Related parts for ISL81486

ISL81486 Summary of contents

Page 1

... 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 Devices on the Bus • ...

Page 2

... RS-485/422 level, inverting receiver input and inverting driver output. Pin is an input ( pin is an output ( System power supply input (4.5V to 5.5V). CC Typical Operating Circuit + B/Z A GND 5 2 ISL4486, ISL81486 Truth Table OUTPUTS B/Z A High-Z High FUNCTION ISL4486 + 0.1µ ...

Page 3

... I OZR Receiver Output Current Receiver Input Resistance R No-Load Supply Current (Note ISL4486, ISL81486 Thermal Information Thermal Resistance (Typical, Note SOIC Package . . . . . . . . . . . . . . . . . . . . . . . . . 8 Ld MSOP Package . . . . . . . . . . . . . . . . . . . . . . . . Maximum Junction Temperature (Plastic Package 150°C Maximum Storage Temperature Range . . . . . . . . . . . -65°C to 150°C +0.5V) Maximum Lead Temperature (Soldering 10s 300°C ...

Page 4

... Devices meeting these limits are denoted as “0.6 unit load (UL)” transceivers. The RS-485 standard allows Unit Loads on the bus 0.6UL transceiver permits > 50 devices on the bus. 6. This is the part-to-part skew between any two units tested with identical test conditions (Temperature ISL4486, ISL81486 = 4.5V to 5.5V; Unless Otherwise Specified. Typicals are TEST CONDITIONS , -7V ≤ ...

Page 5

... PARAMETER OUTPUT FIGURE 3A. TEST CIRCUIT 5 ISL4486, ISL81486 FIGURE 1. DC DRIVER TEST CIRCUITS 100pF L OUT (Y) DIFF C = 100pF L OUT (Z) DIFF OUT ( SKEW = |CROSSING PT. OF Y↑ & Z↓ - CROSSING PT. OF Y↓ & Z↑| 110Ω ...

Page 6

... FIGURE 5A. TEST CIRCUIT SIGNAL A GENERATOR PARAMETER FIGURE 6A. TEST CIRCUIT 6 ISL4486, ISL81486 (Continued 100pF L DIFF C = 100pF L DIFF OUT ( FIGURE 4. DRIVER DATA RATE 15pF A RO FIGURE 5. RECEIVER PROPAGATION DELAY RE 1kΩ GND SW 15pF ...

Page 7

... Outputs of the drivers are not slew rate limited, so faster output transition times allow data rates of at least 40Mbps with the ISL4486, and 30Mbps with the ISL81486. Driver outputs are three-statable via the active high DE input. For parallel applications, bit-to-bit skews between any two ...

Page 8

... DIFFERENTIAL OUTPUT VOLTAGE (V) FIGURE 11. DRIVER OUTPUT CURRENT vs DIFFERENTIAL OUTPUT VOLTAGE 8 ISL4486, ISL81486 25°C, ISL4486 and ISL81486; Unless Otherwise Specified DRIVER+CABLE DELAY 3 1.5 0 -1.5 -3 FIGURE 8. ISL4486 DRIVER AND RECEIVER WAVEFORMS 950 900 850 ...

Page 9

... OUTPUT VOLTAGE (V) FIGURE 17. DRIVER OUTPUT CURRENT vs SHORT CIRCUIT VOLTAGE 9 ISL4486, ISL81486 25°C, ISL4486 and ISL81486; Unless Otherwise Specified (Continued 2.5 t PLHZ t PLHY 1.5 0 FIGURE 14. DRIVER SKEW AND PULSE DISTORTION vs = 54Ω 15pF L ...

Page 10

... Datums and to be determined at Datum plane - 11. Controlling dimension: MILLIMETER. Converted inch dimen- sions are for reference only. 10 ISL4486, ISL81486 M8.118 (JEDEC MO-187AA) 8 LEAD MINI SMALL OUTLINE PLASTIC PACKAGE SYMBOL θ ...

Page 11

... 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. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries. For information regarding Intersil Corporation and its products, see www.intersil.com 11 ISL4486, ISL81486 M8.15 (JEDEC MS-012-AA ISSUE C) 8 LEAD NARROW BODY SMALL OUTLINE PLASTIC ...

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