Details, datasheet, quote on part number: ISL4485EIB-T
PartISL4485EIB-T
CategoryInterface and Interconnect => RS-485/RS-422
DescriptionRS-485/RS-422 Transceivers, 20Mbps, Esd Protected to 15kV, Half Duplex, 5V, With Rx/tx Enables <<<>>> <<<>>>The Intersil ISL4485E is a High Speed, Bicmos 5V Powered, Single Transceiver That Meets Both The RS-485 And RS-422 Standards For Balanced Communication. Each Driver Output/receiver Input is Protected Against 15kV Esd Strikes, Without Latch-up. Unlike Competitive Devices, This Intersil Device is Specified For 10% Tolerance Supplies (4.5V to 5.5V).
CompanyIntersil Corporation
DatasheetDownload ISL4485EIB-T datasheet
Cross ref.Similar parts: ST485EBDR, ST485BDR, ST485CDR, ST485EXDR, ST485ECDR, ST485ERBDR, DS14185, DS1487, DS16F95A, DS16F95QML
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Packages8 Ld SOIC T+R
  

 

Features, Applications

The Intersil is a high speed, BiCMOS 5V powered, single transceiver that meets both the RS-485 and RS-422 standards for balanced communication. Each driver output/receiver input is protected against 15kV ESD strikes, without latch-up. Unlike competitive devices, this Intersil device is specified for 10% tolerance supplies to 5.5V). The excellent differential output voltage coupled with high drive-current output stages allow 20Mbps operation over twisted pair networks to 450 feet in length. The 25k receiver input resistance presents a "single unit load" to the RS-485 bus, allowing to 32 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. The half duplex configuration multiplexes the Rx inputs and Tx outputs to allow transceivers with Rx and Tx disable functions in 8 lead packages.

Features

Pb-free Available as an Option High Data Rates. 20Mbps RS-485 I/O Pin ESD Protection. 15kV HBM - Class 3 ESD Level on all Other Pins. >7kV HBM Operates from a Single +5V Supply (10% Tolerance) 1 Unit Load Allows to 32 Devices on the Bus Low Quiescent Current. to +12V Common Mode Input Voltage Range Three State Rx and Tx Outputs 30ns Propagation Delays, 2ns Skew Current Limiting and Thermal Shutdown for driver Overload Protection

Applications

SCSI "Fast 20" Drivers and Receivers Data Loggers Security Networks Building Environmental Control Systems Industrial/Process Control Networks Level Translators

PART NO. (BRAND) ISL4485EIBZ (4485EIBZ) (See Note) ISL4485EIBZ-T (4485EIBZ) (See Note) TEMP. RANGE (oC) to 85 PACKAGE 8 Ld SOIC 8 Ld SOIC (Pb-free) 8 Ld SOIC Tape & Reel 8 Ld SOIC Tape & Reel (Pb-free) PKG. DWG. # M8.15

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.

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 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.

TRANSMITTING INPUTS 0 X OUTPUTS B/Z 0 1 High-Z A/Y 1 0 High-Z RE INPUTS DE A-B +0.2V -0.2V Inputs Open X RECEIVING OUTPUT 0 1 High-Z

PIN DE DI GND A/Y FUNCTION Receiver output: by at least RO is high; 0.2V or more, RO is low; RO = High if A and B are unconnected (floating). Receiver output enable. RO is enabled when RE is low; RO is high impedance when RE is high. Driver output enable. The driver outputs, Y and Z, are enabled by bringing DE high. They are high impedance when DE is low. Driver input. A low on DI forces output Y low and output Z high. Similarly, a high on DI forces output Y high and output Z low. Ground connection. 15kV HBM ESD Protected, noninverting receiver input and noninverting driver output. Pin is an input (A) = 0; pin is an output (Y) 1. 15kV HBM ESD Protected, inverting receiver input and inverting driver output. Pin is an input (B) = 0; pin is an output (Z) = 1. System power supply input to 5.5V).

VCC to Ground. 7V Input Voltages DI, DE, RE. -0.5V to (VCC +0.5V) Input / Output Voltages to +12.5V RO. -0.5V to (VCC +0.5V) Short Circuit Duration Y, Z. Continuous ESD Rating. See Specification Table

8 Ld SOIC Package. 170 Maximum Junction Temperature (Plastic Package). 150oC Maximum Storage Temperature Range. to 150oC Maximum Lead Temperature (Soldering 10s). 300oC (Lead Tips Only)

CAUTION: Stresses above those listed in "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.

NOTE: JA is measured with the component mounted on a low effective thermal conductivity test board in free air. See Tech Brief TB379 for details.

Test Conditions: VCC to 5.5V; Unless Otherwise Specified. Typicals are at VCC = 25oC, Note 2 SYMBOL TEST CONDITIONS TEMP (oC) MIN TYP MAX UNITS

PARAMETER DC CHARACTERISTICS Driver Differential VOUT (no load) Driver Differential VOUT (with load)

Change in Magnitude of Driver Differential VOUT for Complementary Output States Driver Common-Mode VOUT Change in Magnitude of Driver Common-Mode VOUT for Complementary Output States Logic Input High Voltage Logic Input Low Voltage Logic Input Current Input Current (A, B), (Note 5)

Receiver Differential Threshold Voltage Receiver Input Hysteresis Receiver Output High Voltage Receiver Output Low Voltage Three-State (high impedance) Receiver Output Current Receiver Input Resistance No-Load Supply Current, (Note 3)

Driver Short-Circuit Current, VO = High or Low Receiver Short-Circuit Current

 

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