NM485SLC www.murata-ps.com Low Power Isolated EIA-485 Driver and Receiver ELECTRICAL CHARACTERISTICS Parameter Test conditions Min. Typ. Max. Units Supply voltage, VCC 4.75 5.0 5.25 V Isolated reference voltage, VREF 5.0 +VREF Current RL=54 25 mA High level input voltage, VIH 2.8 V D ENABLE, R ENABLE and DIN Low level input voltage, VIL 0.8 V Common mode output voltage, VOC -7.0 12 V High level output current IOH Driver -60 mA Low level output current, IOL 60 mA Common mode input voltage, VIC 12 V Differential input voltage, VID 12 V FEATURES Receiver High level output current, IOH -5.0 mA RoHS compliant Low level output current, IOL 25 mA Site compatible with NM485D RECEIVER ELECTRICAL CHARACTERISTICS Single 5V supply Parameter Test conditions Min. Typ. Max. Units High threshold differential input, VTH VO=2.7V, IO=-0.4mA 0.2 V Thermal shutdown protection Low threshold differential input, VTL VO=0.5V, IO=16mA -0.2 V EIA-485 and CCITT V.10 & V.11 compatible Input hysteresis, VT 70 mV High level output voltage, VOH VID=200mV, IOH=-5.0mA 2.7 V Differential driver and receiver Low level output voltage, VOL VID=-200mV, IOL=25mA 0.8 V Driver tri-state outputs active high enable Other input at 0V, VI=12V 1.0 Line input current, II mA Other input at 0V, VI=-7.0V -0.8 Low Prole 24 pin DIL package style Short circuit output current, IOS 85 mA 1kVrms Isolation Input resistance, RI 12 K Thermal shutdown protection RECEIVER SWITCHING CHARACTERISTICS Parameter Test conditions Min. Typ. Max. Units DESCRIPTION Propagation delay time L to H, TPLH VID=-1.5V to 1.5V, CL=15pF 150 180 ns The NM485SLC is a low power electrically iso- Propagation delay time H to L, TPHL 130 150 ns lated differential driver and receiver designed for Output disable time from high level CL=15pF 90 150 ns bi-directional data communication or multipoint Output disable time from low level CL=15pF 90 150 ns bus transmission at rates up to 2.5Mbits per Output enable time to high level CL=15pF 130 150 ns second. The device combines a tri-state dif- Output enable time to low level CL=15pF 80 150 ns ferential line driver and a differential input line receiver. The driver and receiver have active high RECEIVER FUNCTION TABLE and active low enables, respectively, which can Differential inputs A-B R ENABLE ROUT be connected together to function as direction VID0.2V Low level High level control. The receiver features a high output state -0.2V<VID<+0.2V Low level Undened when the inputs are left open. Thermal shutdown VID-0.2V Low level Low level protection forces the driver into a high imped- Irrelevant High level High level ance state, under line fault conditions. No external components are needed as a single 5V supply ISOLATION CHARACTERISTICS powers all functions either side of the isolation Parameter Conditions Min. Typ. Max. Units boundary. The device is supplied in a low prole Isolation test voltage Flash tested for 1 second 1000 Vrms 24 pin plastic package. Isolation capacitance 40 pF ABSOLUTE MAXIMUM RATINGS Supply voltage VCC with respect to pin 11 7V Input voltage D ENABLE, R ENABLE and DIN 7V Receiver differential input voltage range -14V to +14V Output voltage range, driver -14V to +14V Power dissipation 1000mW Data transmission rate 2.5Mbps Lead temperature 1.5mm from case for 10 seconds 300C For full details go to www.murata-ps.com/rohs All data taken at TA=25C, VCC=5V. www.murata-ps.com/support KDC NM485SLC.A05 Page 1 of 5NM485SLC Low Power Isolated EIA-485 Driver and Receiver DRIVER ELECTRICAL CHARACTERISTICS Parameter Test conditions Min. Typ. Max. Units High level output voltage, VOH IOH=-25mA 3.7 V Low level output voltage, VOL IOH=25mA 1.1 V Differential output voltage, VOD1 IO=0 1.5 6.0 V RL=100 2.0 V Differential output voltage, VOD2 RL=54 1.5 5.0 V Change in magnitude of differential output voltage, VOD 0.2 V Common mode output voltage, VOC RL=54 or 100 -1.0 3.0 V Change in magnitude of common mode output voltage, VOC 0.2 V Output current power off, IO VCC=0, VO=-7.0V to 12V 100 A High level input current, IIH VIH=4.0V 2.0 20 A Low level input current, IIL VIL=0.8V -8.0 -15 mA 1 VO=-7.0V -250 mA Short circuit output current, IOS 1 VO=12V 250 mA DRIVER SWITCHING CHARACTERISTICS Parameter Test conditions Min. Typ. Max. Units Differential output delay time, TDD RL=54, CL=50pF 20 25 ns Output disable time from high level, TPHZ RL=110, CL=50pF 70 120 ns Output disable time from low level, TPLZ RL=110, CL=50pF 60 120 ns Propagation delay time L to H, TPLH 80 150 ns RL=27, CL=50pF Propagation delay time H to L, TPHL 80 150 ns Differential output transition time, TTD RL=54, CL=50pF 150 300 ns Output enable time to high level, TPZH RL=110, CL=50pF 80 120 ns Output enable time to low level, TPZL RL=110, CL=50pF 80 120 ns DRIVER FUNCTION TABLE DIN D ENABLE DY Output DZ Output High level High level High level Low level Low level High level Low level High level Irrelevant Low level High impedance High impedance TEMPERATURE CHARACTERISTICS Parameter Min. Typ. Max. Units Operating free-air temperature range 070C Storage temperature range -40 125 C RoHS COMPLIANCE INFORMATION This series is compatible with RoHS soldering systems with a peak wave solder temperature of 300C for 10 seconds. The pin termination nish on this product series is Matte Tin over Nickel Preplate. The series is backward compatible with Sn/Pb soldering systems. For further information, please visit www.murata-ps.com/rohs 1. Duration of short circuit should not exceed 1 second. www.murata-ps.com/support KDC NM485SLC.A05 Page 2 of 5