Full Fail-safe RS-485/RS-422 Transceivers

www.DataSheet4U.com ® ISL3259E Data Sheet November 13, 2007 FN6587.0 ±15kV ESD Protected, 100Mbps, 5V, PROFIBUS®, Full Fail-safe, RS-485/RS-422 Transceivers Intersil’s ISL3259E 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 100Mbps) required by high speed PROFIBUS applications. The low bus currents (+220µA/-150µA) 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 specification’s load limit, and without using repeaters. This transceiver requires a 5V supply, and delivers at least a 2.1V differential output voltage. This translates into better noise immunity (data integrity), longer reach, or the ability to drive up to six 120Ω terminations in “star” or other non-standard bus topologies. SCSI applications benefit from the ISL3259’s 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. 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 54Ω Better Noise Immunity, or Drive up to 6 Terminations • Very High Data Rate . . . . . . . . . . . . . . . . up to 100Mbps • 11/13ns (Max) Tx/Rx Propagation Delays; 1.5ns (Max) Skew • 1/5 Unit Load Allows up to 160 Devices on the Bus • Full Fail-Safe (Open, Shorted, Terminated/Undriven) Receiver • High Rx IOL to Drive Opto-Couplers for Isolated Applications • Hot Plug - Tx and Rx Outputs Remain Three-State During Power-Up • Low Quiescent Supply Current . . . . . . . . . . . . . . . . . 4mA • Low Current Shutdown Mode. . . . . . . . . . . . . . . . . . . 1µA • -7V to +12V Common Mode Input Voltage Range • Three-State Rx and Tx Outputs • Operates from a Single +5V Supply • Current Limiting and Thermal Shutdown for Driver Overload Protection • Pb-Free (RoHS Compliant) Applications • 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 1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc. Copyright Intersil Americas Inc. 2007. All Rights Reserved All other trademarks mentioned are the property of their respective owners. www.DataSheet4U.com ISL3259E Ordering Information PART NUMBER (Notes 1, 2) ISL3259EIUZ ISL3259EIRZ NOTES: 1. Add “-T” suffix for tape and reel. Please refer to TB347 for details on reel specifications. 2. These Intersil Pb-free plastic packaged products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin plate PLUS ANNEAL - e3 termination finish, which is RoHS compliant and 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-020. PART MARKING 3259Z 3259 TEMP. RANGE (°C) -40 to +85 -40 to +85 PACKAGE (Pb-Free) 8 Ld MSOP 10 Ld 3x3 DFN PKG. DWG. # M8.118 L10.3x3C Pinouts ISL3259E (8 LD MSOP) TOP VIEW RO 1 RE 2 DE 3 DI 4 D 8 7 6 5 VCC B/Z A/Y GND ISL3259E (10 LD DFN) TOP VIEW R RO RE DE DI NC 1 2 3 4 5 10 VCC 9 NC 8 B/Z 7 A/Y 6 GND Truth Table TRANSMITTING INPUTS RE X X 0 1 DE 1 1 0 0 DI 1 0 X X OUTPUTS B/Z 0 1 High-Z High-Z* A/Y 1 0 High-Z High-Z* Truth Table RECEIVING INPUTS RE 0 0 0 1 1 DE 0 0 0 1 0 A-B ≥-0.05V ≤-0.2V Inputs Open/Shorted X X OUTPUT RO 1 0 1 High-Z High-Z* NOTE: *Shutdown Mode NOTE: *Shutdown Mode 2 FN6587.0 November 13, 2007 www.DataSheet4U.com ISL3259E Pin Descriptions PIN RO FUNCTION Receiver output: If A - B ≥ -50mV, RO is high; If A - B ≤ -200mV, RO is low; RO = High if A and B are unconnected (floating) or shorted, or connected to a terminated bus that is undriven. Receiver output enable. RO is enabled when RE is low; RO is high impedance when RE is high. If the Rx enable function isn’t required, connect RE directly to GND. Driver output enable. The driver outputs, Y and Z, are enabled by bringing DE high. They are high impedance when DE is low. If the Tx enable function isn’t required, connect DE to VCC through a 1kΩ or greater resistor. 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. This is also the potential of the DFN thermal pad. ±15kV IEC61000 ESD Protected RS-485, RS-422 level, noninverting receiver input and noninverting driver output. Pin is an input (A) if DE = 0; pin is an output (Y) if DE = 1. ±15kV IEC61000 ESD Protected RS-485, RS-422 level, inverting receiver input and inverting driver output. Pin is an input (B) if DE = 0; pin is an output (Z) if DE = 1. System power supply input (4.75V to 5.25V). No Connection. RE DE DI GND A/Y B/Z VCC NC Typical Operating Circuit ISL3259E +5V + 8 VCC 1 RO 2 RE 3 DE 4 DI R B/Z A/Y 7 6 RT RT 7 6 B/Z A/Y 0.1µF MSOP PIN NUMBERS SHOWN 0.1µF + 8 VCC D DI 4 DE 3 RE 2 R GND 5 GND 5 RO 1 +5V D 3 FN6587.0 November 13, 2007 www.DataSheet4U.com ISL3259E Thermal Information Thermal Resistance (Typical) Absolute Maximum Ratings VCC 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 (VCC +0.3V) Short Circuit Duration Y, Z . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Continuous ESD Rating . . . . . . . . . . . . . . . . . . . . . . . . . See Specification Table θJA (°C/W) 8 Ld MSOP Package (Note 3) . . . . . . . . . . . . . . . . . 140 10 Ld DFN Package (Note 4). . . . . . . . . . . . . . . . . . 75 Maximum Junction Temperature (Plastic Package) . . . . . . +150°C Maximum Storage Temperature Range . . . . . . . . . .-65°C to +150°C Pb-free reflow profile . . . . . . . . . . . . . . . . . . . . . . . . . .see link below http://www.intersil.com/pbfree/Pb-FreeReflow.asp Operating Conditions Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . .-40°C to +85°C CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product reliability and result in failures not covered by warranty. NOTE: 3. θJA is measured with the component mounted on a high effective thermal conductivity test board in free air. See Tech Brief TB379 for details. 4. θJA is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See Tech Brief TB379. Electrical Specifications Test Conditions: VCC = 4.75V to 5.25V; Unless Otherwise Specified. Typicals are at VCC = 5V, TA = +25°C, (Note 5). SYMBOL TEST CONDITIONS TEMP (°C) MIN (Note 14) TYP MAX (Note 14) UNITS PARAMETER DC CHARACTERISTICS Driver Differential VOUT VOD No Load RL = 100Ω (RS-422) (Figure 1A) RL = 54Ω (RS-485) (Figure 1A) RL = 60Ω, -7V ≤ VCM ≤ 12V (Figure 1B) Full Full Full Full Full 2.6 2.1 1.9 - 3.4 2.8 2.7 0.01 VCC VCC 0.2 V V V V 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/Y, B/Z) ΔVOD RL = 54Ω or 100Ω (Figure 1A) VOC ΔVOC RL = 54Ω or 100Ω (Figure 1A) RL = 54Ω or 100Ω (Figure 1A) Full Full - 2 0.01 3 0.2 V V VIH VIL IIN1 IIN2 DI, DE, RE DI, DE, RE DI = DE = RE = 0V or VCC DE = 0V, VCC = 0V or 5.25V VIN = 12V VIN = -7V Full Full Full Full Full Full 25 Full 25 Full Full Full Full 2 -2 -160 -200 VCC - 0.5 25 -1 9 28 40 0.015 0.8 2 220 ±250 -50 0.4 1 V V µA µA µA mA pF mV mV V V mA µA Driver Short-Circuit Current, VO = High or Low Differential Capacitance Receiver Differential Threshold Voltage Receiver Input Hysteresis Receiver Output High Voltage Receiver Output Low Voltage Receiver Output Low Current Three-State (High Impedance) Receiver Output Current IOSD1 CD VTH ΔVTH VOH VOL IOL IOZR DE = VCC, -7V ≤ VY or VZ ≤ 12V (Note 7) A/Y to B/Z -7V ≤ VCM ≤ 12V VCM = 0V IO = -8mA, VID = -50mV IO = +10mA, VID = -200mV VOL = 1V, VID = -200mV 0.4V ≤ VO ≤ 2.4V 4 FN6587.0 November 13, 2007 www.DataSheet4U.com ISL3259E Test Conditions: VCC = 4.75V to 5.25V; Unless Otherwise Specified. Typicals are at VCC = 5V, TA = +25°C, (Note 5). (Continued) SYMBOL RIN IOSR TEST CONDITIONS -7V ≤ VCM ≤ 12V 0V