SP486CT-L EXAR | Alldatasheet

Document overview

  • Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
  • PDF pages: 9

Technical content

Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 50-668-707 • www.exar.com SP486_487_00_066

DESCRIPTION

  • RS-485 or RS-422 Applications
  • Quad Differential Line Drivers
  • Tri-state Output Control
  • 40ns Typical Driver Propagation Delays
  • 5ns Skew
  • -7V to +2V Common Mode Output Range
  • 00µA Supply Current
  • Single +5V Supply Operation
  • Pin Compatible with SN7572, SN7574, LTC486 and LTC487 SP486/SP487 Quad RS-485/RS-422 Line Drivers The SP486 and SP487 are low-power quad differential line drivers meeting RS-485 and RS- 422 standards. The SP486 features a common driver enable control; the SP487 provides independent driver enable controls for each pair of drivers. Both feature tri-state outputs and a wide common-mode output range. SP486 and SP487 are available in a 6-pin SOIC package.

Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 50-668-707 • www.exar.com SP486_487_00_066 ABSOLUTE MAXIMUM RATINGS 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. Input Voltages Input Currents Power Dissipation (derate 7mW/ºC above +70ºC) (derate 7mW/ºC above +70ºC)

ELECTRICAL CHARACTERISTICS

VCC = +5.0V +/-5%; typicals at 25°C; TMIN ≤ TAMB ≤ TMAX unless otherwise noted. PARAMETERS MIN. TYP. MAX. UNITS CONDITIONS DC CHARACTERISTICS DIGITAL INPUTS DI, EN, EN, EN/EN2, EN3/EN4 Voltage VIL 0.8 Volts Voltage VIH 2.0 Volts Input Current +/-2 µA VIN = 0V to VCC DRIVER OUTPUTS Differential Voltage 5 Volts IO = 0; unloaded Differential Voltage 2 Volts RL = 50Ω (RS-422); Figure 1 Differential Voltage .5 2 5 Volts RL = 27Ω (RS-485); Figure 1 Change in Output Magnitude for Complementary Output state

0.2 Volts RL = 27Ω or 50Ω; Figure 1

Common Mode Output Voltage 2.3 3 Volts RL = 27Ω or 50Ω; Figure 1 Change in Common Mode Output Magnitude for Complementary Output state Driver Short Circuit Current VOH +/-250 mA -7V ≤ VO ≤ +10V Driver Short Circuit Current VOL +/-250 mA -7V ≤ VO ≤ +10V High Impedance Output Current +/-2 +/-200 µA VO = -7V to +0V POWER REQUIREMENTS Supply Voltage 4.75 5.25 Volts Supply Current 0.5 0 µA No load, output enabled Supply Current 0. 0 µA No load, output disabled

Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 50-668-707 • www.exar.com SP486_487_00_066 Pin - DI - Driver Input - If driver output is enabled, a logic 0 on DI forces driver output DOA low and DOB high. A logic on DI with driver output enabled forces driver DOA high and DOB low. Pin 2 - DOA - Driver output A. Pin 3 - DOB - Driver output B. Pin 4 - EN - Driver Output Enable; Please refer to SP486 truth table (). Pin 5 - DO2B - Driver 2 output B. Pin 6 - DO2A - Driver 2 output A. Pin 7 - DI2 - Driver 2 Input - If driver 2 output is enabled, a logic 0 on DI2 forces driver output DO2A low and DO2B high. A logic on DI2 with driver 2 output enabled forces driver DO2A high and DO2B low. Pin 8 - GND - Ground. SP486 Pin Function SP486 PIN FUNCTION Pin 9 - DI3 - Driver 3 Input - If driver 3 output is enabled, a logic 0 on DI forces driver output DO3A low and DO3B high. A logic on DI3 with driver 3 output enabled forces driver DO3A high and DO3B low. Pin 0 - DO3A - Driver 3 output A. Pin - DO3B - Driver 3 output B. Pin 2 - EN - Driver Output Disable; Please refer to SP486 truth table (). Pin 3 - DO4B - Driver 4 output B. Pin 4 - DO4A - Driver 4 output A. Pin 5 - DI4 - Driver 4 Input - If driver 4 output is enabled, a logic 0 on DI4 forces driver output DO4A low and DO4B high. A logic on DI4 with driver 4 output enabled forces driver DO4A high and DO4B low. Pin 16 - Supply Voltage - +4.75V ≤ Vcc ≤ +5.25V.

Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 50-668-707 • www.exar.com SP486_487_00_066 PIN FUNCTION SP487 Pin Function SP487 Pin - DI - Driver Input - If driver output is enabled, a logic 0 on DI forces driver output DOA low and DOB high. A logic on DI with driver output enabled forces driver DOA high and DOB low. Pin 2 - DOA - Driver output A. Pin 3 - DOB - Driver output B. Pin 4 - EN/EN2 - Driver and 2 Output Enable; Please refer to SP487 truth table (2). Pin 5 - DO2B - Driver 2 output B. Pin 6 - DO2A - Driver 2 output A. Pin 7 - DI2 - Driver 2 Input - If driver 2 output is enabled, a logic 0 on DI2 forces driver output DO2A low and DO2B high. A logic on DI2 with driver 2 output enabled forces driver DO2A high and DO2B low. Pin 8 - GND - Ground. Pin 9 - DI3 - Driver 3 Input - If driver 3 output is enabled, a logic 0 on DI forces driver output DO3A low and DO3B high. A logic on DI3 with driver 3 output enabled forces driver DO3A high and DO3B low. Pin 0 - DO3A - Driver 3 output A. Pin - DO3B - Driver 3 output B. Pin 2 - EN3/EN4 - Driver 3 and 4 Output Enable; Please refer to SP487 truth table (2).. Pin 3 - DO4B - Driver 4 output B. Pin 4 - DO4A - Driver 4 output A. Pin 5 - DI4 - Driver 4 Input - If driver 4 output is enabled, a logic 0 on DI4 forces driver output DO4A low and DO4B high. A logic on DI4 with driver 4 output enabled forces driver DO4A high and DO4B low. Pin 16 - Supply Voltage - +4.75V ≤ Vcc ≤ +5.25V.

Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 50-668-707 • www.exar.com SP486_487_00_066 The SP486 and SP487 are low power quad differential line drivers meeting RS-485 and RS-422 standards. The SP486 features active high and active low common driver enable controls; the SP487 provides inde - pendent, active high driver enable controls for each pair of drivers. The driver outputs are short-circuit limited to 200mA. Data rates up to 0Mbps are supported. The SP486 and SP487 are available in a 6-pin SOIC package. INPUT ENABLES OUTPUTS DI EN EN OUTA OUTB H H X H L L H X L H H X L H L L X L L H X L H Hi-Z Hi-Z INPUT ENABLES OUTPUTS DI EN1/EN2 or EN3/EN4 OUTA OUTB H H H L L H L H X L Hi-Z Hi-Z Table . SP486 Truth Table Table 2. SP487 Truth Table

Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 50-668-707 • www.exar.com SP486_487_00_066

Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 50-668-707 • www.exar.com SP486_487_00_066

ORDERING INFORMATION

Model Temperature Range Package Types

REVISION HISTORy

June 2005 -- Legacy Sipex Datasheet June 20 .0.0 Update ordering information per PDN 050-0 and convert to Exar Format Notice EXAR Corporation reserves the right to make changes to any products contained in this publication in order to improve design, performance or reliabil- ity. EXAR Corporation assumes no representation that the circuits are free of patent infringement. Charts and schedules contained herein are only for illustration purposes and may vary depending upon a user's specific application. While the information in this publication has been carefully checked; no responsibility, however, is assumed for inaccuracies. EXAR Corporation does not recommend the use of any of its products in life support applications where the failure or malfunction of the product can reasonably be expected to cause failure of the life support system or to significantly affect its safety or effectiveness. Products are not authorized for use in such applications unless EXAR Corporation receives, in writting, 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 EXAR Corporation is adequately protected under the circumstances. Copyright 20 EXAR Corporation Datasheet June 20 For technical support please email Exar's Serial Technical Support group at: serialtechsupport@exar.com Reproduction, in part or whole, without the prior written consent of EXAR Corporation is prohibited. Note: /TR = Tape and Reel