廬
ISL4486, ISL81486
Data Sheet
August 2004
FN6060.2
5V, Ultra High Speed, PROFIBUS廬,
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 54鈩?total load. This translates into
longer reach, or better data integrity, at the exceptional
40Mbps data rate.
SCSI applications benefit from the ISL4486鈥檚 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 鈥?.6 unit load鈥?to the RS-485 bus,
which allows up to 50 transceivers on the network.
Receiver (Rx) inputs feature a 鈥渇ail-safe if open鈥?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.
Features
鈥?Specified for 10% Tolerance Supplies
鈥?High Data Rates
ISL4486 . . . . . . . . . . . . . . . . . . . . . . . . . . up to 40Mbps
ISL81486 . . . . . . . . . . . . . . . . . . . . . . . . . up to 30Mbps
鈥?Large Differential Output Voltage . . . . . . . . . . 3V into 54鈩?/div>
鈥?Low Bit-to-Bit (Part-to-Part) Skew for Parallel Applications
鈥?0.6 Unit Load Allows up to 50 Devices on the Bus
鈥?ISL81486 is a Drop-In Replacement for the ADM1486
鈥?Low Quiescent Current . . . . . . . . . . . . . . . . . . . . . 800
碌
A
鈥?-7V to +12V Common Mode Input Voltage Range
鈥?Three-State Rx and Tx Outputs
鈥?14ns (Max) Propagation Delays, 2ns (Max) Skew
鈥?Operates from a Single +5V Supply (10% Tolerance)
鈥?Current Limiting and Thermal Shutdown for driver
Overload Protection
鈥?Pb-free available
Applications
鈥?SCSI 鈥淔ast 40鈥?Drivers and Receivers
鈥?PROFIBUS DP and FMS Networks
鈥?Factory Automation
鈥?Field Bus Networks
鈥?Security Networks
鈥?Building Environmental Control Systems
Ordering Information
PART NO. (BRAND)
ISL4486IB (4486IB)
ISL4486IBZ (4486IB)
(See Note)
ISL4486IU (4486)
ISL4486IUZ (4486)
(See Note)
ISL81486IB (81486IB)
ISL81486IBZ
(81486IB) (See Note)
ISL81486IU (1486)
ISL81486IUZ (1486)
(See Note)
TEMP.
RANGE (擄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
PACKAGE
8 Ld SOIC
8 Ld SOIC
(Pb-free)
8 Ld MSOP
8 Ld MSOP
(Pb-free)
8 Ld SOIC
8 Ld SOIC
(Pb-free)
8 Ld MSOP
8 Ld MSOP
(Pb-free)
PKG.
DWG. #
M8.15
M8.15
M8.118
M8.118
M8.15
M8.15
M8.118
M8.118
鈥?Industrial/Process Control Networks
Pinout
ISL4486, ISL81486 (SOIC, MSOP)
TOP VIEW
RO 1
RE 2
DE 3
DI 4
D
8
7
6
5
V
CC
B/Z
A/Y
GND
R
*Add 鈥?T鈥?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
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143
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Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright 漏 Intersil Americas Inc. 2004. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
INTERSIL
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