ISL4486 Datasheet, PDF (1/11 Pages) Intersil Corporation – 5V, Ultra High Speed, PROFIBUS, RS-485/RS-422 Transceivers

®
Data Sheet
ISL4486, ISL81486
August 2004
FN6060.2
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)
(See Note)
-40 to 85 8 Ld SOIC
(Pb-free)
ISL4486IU (4486)
-40 to 85 8 Ld MSOP
ISL4486IUZ (4486)
(See Note)
-40 to 85 8 Ld MSOP
(Pb-free)
ISL81486IB (81486IB) -40 to 85 8 Ld SOIC
ISL81486IBZ
(81486IB) (See Note)
-40 to 85 8 Ld SOIC
(Pb-free)
ISL81486IU (1486)
-40 to 85 8 Ld MSOP
ISL81486IUZ (1486)
(See Note)
-40 to 85 8 Ld MSOP
(Pb-free)
*Add “-T” suffix to part number for tape and reel packaging.
PKG.
DWG. #
M8.15
M8.15
M8.118
M8.118
M8.15
M8.15
M8.118
M8.118
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.
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 . . . . . . . . . . . . . . . . . . . . . 800µA
• -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
Pinout
ISL4486, ISL81486 (SOIC, MSOP)
TOP VIEW
RO 1
R
RE 2
DE 3
DI 4
D
8 V_CC
7 B/Z
6 A/Y
5 GND
1
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.