ISL4485 Datasheet | Intersil

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 bees 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 - High Data Rates- - - - . up to 20Mbps - RS-485 I/O Pin ESD Protection - - ±15k V HBM - Class 3 ESD Level on all Other Pins - . >7k V HBM - Operates from a Single +5V Supply (10% Tolerance) - 1 Unit Load Allows up to 32 Devices on the Bus - Low Quiescent Current - - - - . 590µA - -7V to +12V mon 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 Ordering Information PART NO. (BRAND) ISL4485EIB (4485EIB) ISL4485EIB-T (4485EIB) TEMP. RANGE (o C) -40 to 85 -40 to 85 PACKAGE 8 Ld SOIC 8 Ld SOIC Tape & Reel PKG. DWG. # M8.15 M8.15 Pinout ISL4485E (SOIC) TOP VIEW RO 1 RE 2 DE 3 DI 4 D 8 7 6 5 VCC B/Z A/Y GND 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. 2003. All Rights Reserved. All other trademarks mentioned are the property of their respective owners. ISL4485E Truth Tables TRANSMITTING INPUTS RE X X X DE 1 1 0 DI 1 0 X OUTPUTS B/Z 0 1 High-Z A/Y 1 0 High-Z RE 0 0 0 1 INPUTS DE 0 0 0 X A-B ≥ +0.2V ≤ -0.2V...