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ISL4485IB, ISL4486, ISL4486IU

Table of contents:
Info of ISL4485IB
Info of ISL4486
Info of ISL4486IU

ISL4485IB, ISL4486, ISL4486IU Selling Leads, Datasheet

MFG:INTERSIL Package Cooled:SOP8 D/C:03+

ISL4485IB, ISL4486, ISL4486IU Datasheet download

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Part Number: ISL4485IB

MFG: INTERSIL

Package Cooled: SOP8

D/C: 03+

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ISL4486 General Description

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 ISL4486s 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.

ISL4486 Maximum Ratings

V_CC to Ground. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7V
Input Voltages DI, DE, RE . . . . . . . . . . . . . -0.5V to 7V
Input/Output Voltages A/Y, B/Z . . . . . . . -8V to +12.5V
RO . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to (V_CC +0.5V)
Short Circuit Duration Y, Z . . . . . . . . . . . . . Continuous

ISL4486 Features

• Specified for 10% Tolerance Supplies
• High Data Rates ISL4486. . . up to 40Mbps ISL81486. . . up to 30Mbps
• Large Differential Output Voltage . . . . . . . . . . 3V into 54
• 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 . . . . . . . . . . . . . . . . . . . . . 800A
• -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

ISL4486 Typical Application

• 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

ISL4486 Connection Diagram

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