ISL3159E

Features:

• IEC61000 ESD Protection on RS-485 I/O Pins . . . ±15kV
- Class 3 HBM ESD Level on all Other Pins . . . . . . >9kV
• Large Differential VOUT . . . . . . . . . . . . . . . 2.8V into 54 etter Noise Immunity, or drive up to 6 Terminations
• High Data Rates. . . . . . . . . . . . . . . . . . . . . up to 40Mbps
• Specified for +125°C Operation
• 11/13ns (Max) Tx/Rx Propagation Delays; 1.5ns (Max) kew
• 1/5 Unit Load Allows up to 160 Devices on the Bus
• Full Fail-Safe (Open, Shorted, Terminated/Undriven) eceiver
• High Rx IOL to Drive Opto-Couplers for Isolated pplications
• Hot Plug - Tx and Rx Outputs Remain Three-State During ower-Up
• Low Quiescent Supply Current . . . . . . . . . . . . . . . . . 4mA
• Low Current Shutdown Mode. . . . . . . . . . . . . . . . . . . 1A
• -7V to +12V Common Mode Input Voltage Range
• Three-State Rx and Tx Outputs
• Operates from a Single +5V Supply (10% Tolerance)
• Current Limiting and Thermal Shutdown for driver verload Protection
• Pb-Free Plus Anneal Available (RoHS Compliant)




Application

• PROFIBUS^® DP and FMS Networks
• SCSI "Fast 40" Drivers and Receivers
• Motor Controller/Position Encoder Systems
• Factory Automation
• Field Bus Networks
• Security Networks
• Building Environmental Control Systems
• Industrial/Process Control Networks




Pinout






Specifications

V_CC to GND. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7V
Input Voltages
DI, DE, RE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 7V
Input/Output Voltages
A/Y, B/Z . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-9V to +13V
RO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to (V_CC +0.3V)
Short Circuit Duration
Y, Z . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Continuous
ESD Rating . . . . . . . . . . . . . . . . . . . . . . . . .See Specification Table




Description

Intersils ISL3159E is a 15kV IEC61000 ESD Protected, 5V powered, single transceiver that meets both the RS-485 and RS-422 standards for balanced communication. It also features the larger output voltage and higher data rate - up to 40Mbps - required by high speed PROFIBUS applications, and is offered in Industrial and Extended Industrial (-40C to +125C) temperature ranges. The low bus currents (+220A/-150A) present a 1/5 unit load to the RS-485 bus, thus allowing up to 160 transceivers on the network without violating the RS-485 specifications load limit, and without using repeaters. This transceiver requires a 5V 10% tolerance supply, and delivers at least a 2.1V differential output voltage over this supply range. This translates into better noise immunity (data integrity), longer reach, or the ability to drive up to six 120 terminations in star or other non-standard bus topologies, at the exceptional 40Mbps data rate. SCSI applications benefit from the ISL3159s 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. Receiver (Rx) inputs feature a Full Fail-Safe design, which ensures a logic high Rx output if Rx inputs are floating, shorted, or terminated but undriven. Rx outputs feature high drive levels (typically >30mA @ VOL = 1V) to ease the design of optically isolated interfaces. Hot Plug circuitry ensures that the Tx and Rx outputs remain in a high impedance state while the power supply stabilizes. 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.