SP491ECN-L/TR

SP490E / SP491E Enhanced Full-Duplex RS-485 Transceivers Description FEATURES ■■ 5V only ■■ Low power BiCMOS ■■ Driver/receiver enable (SP491E) ■■ RS-485 and RS-422 drivers/receivers ■■ Pin compatible with LTC490 and SN75179 (SP490E) ■■ Pin compatible with LTC491 and SN75180 (SP491E) ■■ Improved ESD specifications: ±15kV Human Body Model ±15kV IEC61000-4-2 Air Discharge The SP490E is a low power differential line driver/receiver meeting RS-485 and RS-422 standards up to 10Mbps. The SP491E is identical to the SP490E with the addition of driver and receiver tri-state enable lines. Both products feature ±200mV receiver input sensitivity, over wide common mode range. The SP490E is available in 8-pin NSOIC packages for operation over the commercial and industrial temperature ranges. The SP491E is available in 14-pin NSOIC packages for operation over the commercial and industrial temperature ranges. Ordering Information - Back Page Block Diagrams VCC R D GND 1 NC 2 3 R 8 A 7 B 6 D 4 R 1 2 R 3 RE DE 4 Z 5 D 6 GND 7 GND 5 Y SP490E 14 VCC 13 NC 12 A 11 B 10 D Z 9 Y 8 NC SP491E REV 1.0.2 1/13 SP490E / SP491E Absolute Maximum Ratings (SP490E) These are stress ratings only and functional operation of the device at these ratings or any other above those indicated in the operation sections of the specifications below is not implied. Exposure to absolute maximum rating conditions for extended periods of time may affect reliability. VCC.............................................................................. ..7.0V Input Voltages Drivers......................-0.5V to (VCC + 0.5V) Receivers...........................................±14V Output Voltages Drivers................................................±14V Receivers..................-0.5V to (VCC + 0.5V) Storage Temperature.................................-65˚C to +150˚C Power Dissipation..................................................1000mW Electrical Characteristics TAMB = TMIN to TMAX and VCC = 5V ±5% unless otherwise noted. PARAMETERS MIN. TYP. MAX. UNITS CONDITIONS VCC V Unloaded; R = ∞Ω; Figure 1 SP490E Driver DC Characteristics Differential output voltage Differential output voltage 2 VCC V With load; R = 50Ω (RS-422); Figure 1 Differential output voltage 1.5 VCC V With load; R = 27Ω (RS-485); Figure 1 0.2 V R = 27Ω or R = 50Ω; Figure 1 3 V R = 27Ω or R = 50Ω; Figure 1 V Applies to D Change in magnitude of driver differential output voltage for complimentary states Driver common-mode output voltage Input high voltage 2.0 Input low voltage 0.8 V Applies to D Input current ±10 µA Applies to D Driver short circuit current VOUT = HIGH ±250 mA -7V ≤ VO ≤ 12V Driver short circuit current VOUT = LOW ±250 mA -7V ≤ VO ≤ 12V SP490E Driver AC Characteristics Maximum data rate 10 Mbps Driver input to output, tPLH 30 60 ns RDIFF = 54Ω, CL1 = CL2 = 100pF; Figures 3 & 5 Driver input to output, tPHL 30 60 ns RDIFF = 54Ω, CL1 = CL2 = 100pF; Figures 3 & 5 Driver skew 5 ns tSKEW = | tDPLH - tDPHL |; Figures 3 & 5 Driver rise or fall time 15 ns From 10%-90%; RDIFF = 54Ω, CL1 = CL2 = 100pF; Figures 3 & 5 40 REV 1.0.2 2/13 SP490E / SP491E Electrical Characteristics (Continued) TAMB = TMIN to TMAX and VCC = 5V ±5% unless otherwise noted. PARAMETERS MIN. TYP. MAX. UNITS 0.2 Volts CONDITIONS SP490E Receiver DC Characteristics Differential input threshold -0.2 Input hysteresis Output voltage HIGH 70 3.5 Output voltage LOW Input resistance mV 0.4 12 15 -7V ≤ VCM ≤ 12V VCM = 0V Volts VID = 200mV, IO = -4mA Volts VID = -200mV, IO = 4mA kΩ -7V ≤ VCM ≤ 12V Input current (A, B); VIN = 12V ±1.0 mA VIN = 12V Input current (A, B); VIN = -7V -0.8 mA VIN = -7V 85 mA 0V ≤ VO ≤ VCC Short circuit current SP490E Receiver AC Characteristics Maximum data rate 10 Receiver input to output, tPLH 20 45 100 ns RDIFF = 54Ω, CL1 = CL2 = 100pF; Figures 3 and 7 Receiver input to output, tPHL 20 45 100 ns RDIFF = 54Ω, CL1 = CL2 = 100pF; Figures 3 and 7 ns RDIFF = 54Ω, CL1 = CL2 = 100pF; Figures 3 and 7 Differential receiver skew, |tPLH- tPHL| Mbps 13 Power Requirements Supply Voltage 4.75 Supply Current 5.25 900 V µA SP490E Environmental and Mechanical Operating Temperture Commercial (_C_) Industrial (_E_) Storage Temperature 0 70 °C -40 85 °C -65 150 °C Package NSOIC (_N) REV 1.0.2 3/13 SP490E / SP491E Test Circuits A R VOD R VCC S1 CRL VOC 1kΩ Test Point Receiver Output 1kΩ S2 B Figure 1: Driver DC Test Load Circuit Figure 2: Receiver Timing Test Load Circuit 3V DE DI CL1 D RDIFF R RO CL2 15pF Output Under Test 500Ω S1 VCC CL S2 Figure 3: Driver/Receiver Timing Test Circuit Figure 4: Driver Timing Test Load #2 Circuit REV 1.0.2 4/13 SP490E / SP491E Switching Waveforms DI DRIVER OUTPUT VDIFF VZ – VY f = 1MHz; t R ≤ 10ns; t F ≤ 10ns +3V 1.5V 0V Z Y 1.5V t PLH t PHL VO 1/2VO 1/2VO t DPLH VO+ 0V VO– t DPHL tF tR t SKEW = |t DPLH - t DPHL| Figure 5: Driver Propagation Delays f = 1MHz; t R ≤ 10ns; t F ≤ 10ns DE Y, Z 3V 1.5V 0V 1.5V t ZL t LZ 2.3V VOL VOH Y, Z 2.3V 0V Output normally LOW 0.5V Output normally HIGH 0.5V t ZH t HZ Figure 6: Driver Enable and Disable Times A– B R f = 1MHz; t R ≤ 10ns ; t F ≤ 10ns VOD2 + 0V VOD2 – VOH VOL 1.5V t PHL 0V INPUT 1.5V OUTPUT t PLH t SKEW = |t DPLH - t DPHL| Figure 7: Receiver Propagation Delays REV 1.0.2 5/13 SP490E / SP491E Absolute Maximum Ratings (SP491E) These are stress ratings only and functional operation of the device at these ratings or any other above those indicated in the operation sections of the specifications below is not implied. Exposure to absolute maximum rating conditions for extended periods of time may affect reliability. VCC.............................................................................. ..7.0V Input Voltages Logic.........................-0.5V to (VCC + 0.5V) Drivers......................-0.5V to (VCC + 0.5V) Receivers...........................................±14V Output Voltages Logic.........................-0.5V to (VCC + 0.5V) Drivers................................................±14V Receivers..................-0.5V to (VCC + 0.5V) Storage Temperature....................................-65˚C to 150˚C Power Dissipation..................................................1000mW Electrical Characteristics TAMB = TMIN to TMAX and VCC = 5V ±5% unless otherwise noted PARAMETERS MIN. TYP. MAX. UNITS CONDITIONS VCC V Unloaded; R = ∞Ω; Figure 1 SP491E Driver DC Characteristics Differential output voltage Differential output voltage 2 VCC V With load; R = 50Ω (RS-422); Figure 1 Differential output voltage 1.5 VCC V With load; R = 27Ω (RS-485); Figure 1 0.2 V R = 27Ω or R = 50Ω; Figure 1 3 V R = 27Ω or R = 50Ω; Figure 1 V Applies to DE, D, RE Change in magnitude of driver differential output voltage for complimentary states Driver common-mode output voltage Input high voltage 2.0 Input low voltage 0.8 V Applies to DE, D, RE Input current ±10 µA Applies to DE, D, RE Driver short circuit current VOUT = HIGH ±250 mA -7V ≤ VO ≤ 12V Driver short circuit current VOUT = LOW ±250 mA -7V ≤ VO ≤ 12V REV 1.0.2 6/13 SP490E / SP491E Electrical Characteristics (Continued) TAMB = TMIN to TMAX and VCC = 5V ±5% unless otherwise noted PARAMETERS MIN. TYP. MAX. UNITS CONDITIONS SP491E Driver AC Characteristics Maximum data rate 10 Mbps RE = 5V, DE = 5V Driver input to output, tPLH 30 60 ns RDIFF = 54Ω, CL1 = CL2 = 100pF; Figures 3 & 5 Driver input to output, tPHL 30 60 ns RDIFF = 54Ω, CL1 = CL2 = 100pF; Figures 3 & 5 Driver skew 5 10 ns tSKEW = | tDPLH - tDPHL |; Figures 3 & 5 Driver rise or fall time 15 40 ns From 10%-90%; RDIFF = 54Ω, CL1 = CL2 = 100pF; Figures 3 & 5 Driver enable to output HIGH 40 70 ns CL1 = CL2 = 100pF; Figures 4 & 6, S2 closed Driver enable to output LOW 40 70 ns CL1 = CL2 = 100pF; Figures 4 & 6, S1 closed Driver disable time from LOW 40 70 ns CL1 = CL2 = 100pF; Figures 4 & 6, S1 closed Driver disable time from HIGH 40 70 ns CL1 = CL2 = 100pF; Figures 4 & 6, S2 closed 0.2 Volts SP491E Receiver DC Characteristics Differential input threshold -0.2 Input hysteresis Output voltage HIGH 70 mV 3.5 -7V ≤ VCM ≤ 12V VCM = 0V Volts VID = 200mV, IO = -4mA VID = -200mV, IO = 4mA Output voltage LOW 0.4 Volts Three-State ( High Impedance) Output Current ±1 µA 0.4V ≤ VO ≤ 2.4V; RE = 5V kΩ -7V ≤ VCM ≤ 12V Input resistance 12 15 Input current (A, B); VIN = 12V ±1.0 mA DE = 0V, VCC = 0V or 5.25V, VIN = 12V Input current (A, B); VIN = -7V -0.8 mA DE = 0V, VCC = 0V or 5.25V, VIN = -7V 85 mA 0V ≤ VO ≤ VCC Short circuit current SP491E Receiver AC Characteristics Maximum data rate 10 Mbps RE = 0V Receiver input to output, tPLH 20 45 100 ns RDIFF = 54Ω, CL1 = CL2 = 100pF; Figures 3 & 7 Receiver input to output, tPHL 20 45 100 ns RDIFF = 54Ω, CL1 = CL2 = 100pF; Figures 3 & 7 ns |tPLH - tPHL|; RDIFF = 54Ω, CL1 = CL2 = 100pF; Figures 3 & 7 Differential receiver skew 13 Receiver enable to output LOW 45 70 ns CRL = 15pF; Figures 2 & 8; S1 closed Receiver enable to output HIGH 45 70 ns CRL = 15pF; Figures 2 & 8; S2 closed Receiver disable from LOW 45 70 ns CRL = 15pF; Figures 2 & 8; S1 closed Receiver disable from HIGH 45 70 ns CRL = 15pF; Figures 2 & 8; S2 closed REV 1.0.2 7/13 SP490E / SP491E Electrical Characteristics, Continued TAMB = TMIN to TMAX and VCC = 5V ±5% unless otherwise noted PARAMETERS MIN. TYP. MAX. UNITS 5.25 V CONDITIONS Power Requirements Supply voltage 4.75 Supply current 900 µA RE, D = 0V or VCC; DE = VCC SP491E Environmental and Mechanical Operating Temperture Commercial (_C_) Industrial (_E_) Storage Temperature 0 70 °C -40 85 °C -65 150 °C Package NSOIC (_N) Switching Waveforms f = 1MHz; t R ≤ 10ns; t F ≤ 10ns RE R 3V 0V 5V VIL 1.5V 1.5V t ZL 1.5V VIH R 0V 1.5V t LZ Output normally LOW 0.5V Output normally HIGH 0.5V t ZH t HZ Figure 8: Receiver Enable and Disable Times REV 1.0.2 8/13 SP490E / SP491E Pin Functions VCC R D 1 Pin Number 2 3 R 6 D 4 GND 8 A 7 B Z 5 Y Pin Name Description 1 VCC Positive supply 2 R Receiver output 3 D Driver Input 4 GND Ground connection 5 Y Non-inverting driver output 6 Z Inverting driver output 7 B Inverting receiver Input 8 A Non-inverting receiver input SP490E Pinout (Top View) NC R 1 2 R 3 RE DE 4 D GND GND 5 6 7 14 VCC 13 NC 12 A 11 B 10 D Pin Number Z 9 Y 8 NC SP491E Pinout (Top View) REV 1.0.2 Pin Name Description 1 NC No connect 2 R Receiver output 3 RE Receiver output enable active LOW 4 DE Driver output enable active HIGH 5 D Driver input 6 GND Ground connection 7 GND Ground connection 8 NC No connect 9 Y Non-inverting driver output 10 Z Inverting driver output 11 B Inverting receiver input 12 A Non-Inverting receiver input 13 NC No connect 14 VCC Positive supply 9/13 SP490E / SP491E Description The SP490E and SP491E are full-duplex differential transceivers that meet the requirements of RS-485 and RS-422. Fabricated with a MaxLinear proprietary BiCMOS process, both products require a fraction of the power of older bipolar designs. The RS-485 standard is ideal for multi-drop applications or for long-distance interfaces. RS-485 allows up to 32 drivers and 32 receivers to be connected to a data bus, making it an ideal choice for multi-drop applications. Since the cabling can be as long as 4,000 feet, RS-485 transceivers are equipped with a wide (-7V to 12V) common mode range to accommodate ground potential differences. Because RS-485 is a differential interface, data is virtually immune to noise in the transmission line. Receivers The receivers for both the SP490E and SP491E have differential inputs with an input sensitivity as low as ±200mV. Input impedance of the receivers is typically 15kΩ (12kΩ minimum). A wide common mode range of -7V to 12V allows for large ground potential differences between systems. The receivers for both the SP490E and SP491E are equipped with the fail-safe feature. Fail-safe guarantees that the receiver output will be in a high state when the input is left unconnected. The receiver of the SP491E has a receiver enable control line which is active low. A logic low on RE (pin 3) of the SP491E will enable the differential receiver. A logic high on RE (pin 3) of the SP491E will tri-state the receiver. Drivers The drivers for both the SP490E and SP491E have differential outputs. The typical voltage output swing with no load will be 0 volts to +5 volts. With worst case loading of 54Ω across the differential outputs, the driver can maintain greater than 1.5V voltage levels. The driver of the SP491E has a driver enable control line which is active high. A logic high on DE (pin 4) of the SP491E will enable the differential driver outputs. A logic low on DE (pin 4) of the SP491E will tri-state the driver outputs. The SP490E does not have a driver enable. REV 1.0.2 10/13 SP490E / SP491E Mechanical Dimensions NSOIC8 Top View Front View Side View Drawing No: Revision: REV 1.0.2 POD-00000108 A 11/13 SP490E / SP491E Mechanical Dimensions NSOIC14 Top View Front View Side View Drawing No: POD-00000109 Revision: REV 1.0.2 A 12/13 SP490E / SP491E Ordering Information(1) Part Number Operating Temperature Range SP490ECN-L/TR 0°C to 70°C SP490EEN-L/TR -40°C to 85°C SP491ECN-L/TR 0°C to 70°C SP491EEN-L/TR -40°C to 85°C Lead-Free Package 8-pin NSOIC Yes(2) 14-pin NSOIC Packaging Method Reel Reel Reel Reel NOTE: 1. Refer to www.exar.com/SP490E and www.exar.com/SP491E for most up-to-date Ordering Information. 2. Visit www.exar.com for additional information on Environmental Rating. Revision History Revision Date Description 14 2000 Sipex Legacy Data Sheet 1.0.0 May 2011 Convert to Exar format. Remove driver propagation delay minimum and driver rise/fall time minimum entry for SP490E and SP491E. Update ESD rating to IEC61000-4-2. Update ordering information. 1.0.1 May 2013 Correct type errors per PCN 13-0503-01 1.0.2 February 2018 Corporate Headquarters: 5966 La Place Court Suite 100 Carlsbad, CA 92008 Tel.:+1 (760) 692-0711 Fax: +1 (760) 444-8598 www.maxlinear.com Updated to MaxLinear logo. Remove GND from Differential Output Voltage min (page 2 & 5). Update format and ordering information table. Added Pin Function section. Removed obsolete PDIP from description, mechanical and mechanical drawings. High Performance Analog: 1060 Rincon Circle San Jose, CA 95131 Tel.: +1 (669) 265-6100 Fax: +1 (669) 265-6101 Email: serialtechsupport@exar.com www.exar.com The content of this document is furnished for informational use only, is subject to change without notice, and should not be construed as a commitment by MaxLinear, Inc.. MaxLinear, Inc. assumes no responsibility or liability for any errors or inaccuracies that may appear in the informational content contained in this guide. 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Products are not authorized for use in such applications unless MaxLinear, Inc. receives, in writing, assurances to its satisfaction that: (a) the risk of injury or damage has been minimized; (b) the user assumes all such risks; (c) potential liability of MaxLinear, Inc. is adequately protected under the circumstances. MaxLinear, Inc. may have patents, patent applications, trademarks, copyrights, or other intellectual property rights covering subject matter in this document. Except as expressly provided in any written license agreement from MaxLinear, Inc., the furnishing of this document does not give you any license to these patents, trademarks, copyrights, or other intellectual property. Company and product names may be registered trademarks or trademarks of the respective owners with which they are associated. © 2000 - 2017 MaxLinear, Inc. All rights reserved SP490E_SP491E_DS_020618 REV 1.0.2 13/13