DS89C386 NSC | Alldatasheet

Document overview

  • Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
  • PDF pages: 10

Technical content

Features

n Low power design — 240 mW typical n Meets TIA/EIA-422-B (RS-422) n Receiver OPEN input failsafe feature n Guaranteed AC parameters: — Maximum receiver skew −4 ns — Maximum transition time −9 ns n High Output Drive Capability: ±6m A n Available in SSOP packaging: — Requires 30% less PCB space than 3 DS34C86TMs Connection Diagram Function Diagram Truth Table Enable Inputs Output EN RI–RI * RO LXZ H ≥200 mV or OPEN† H H ≤ −200 mV L H +200 mV > and > −200 mV X †Not terminated. TRI-STATE® is a registered trademark of National Semiconductor Corporation. 48L SSOP DS89C386 DS012085-1 Order Number DS89C386TMEA See NS Package Number MS48A DS012085-2 1/6 of package May 1995 DS89C386 Twelve Channel CMOS Differential Line Receiver © 1998 National Semiconductor Corporation DS012085 www.national.com

Absolute Maximum Ratings(Notes 1, 2) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage (V CC ) −0.5 to 7V Input Common Mode Range (VCM ) ±14V Differential Input Voltage (VDIFF) ±14V Enable Input Voltage (VIN) 7V Storage Temperature Range (TSTG ) −65˚C to +150˚C Lead Temperature (Soldering 4 sec) 260˚C Maximum Power Dissipation at 25˚C (Note 4) Current Per Output ±25 mA This device does not meet 2000V ESD rating.(Note 5) Operating Conditions Min Max Unit Supply Voltage (VCC ) 4.50 5.50 V Operating Temperature Range (TA) DS89C386T −40 +85 ˚C Enable Input Rise or Fall Times 500 ns VCC = 5V ±10% (unless otherwise specified) Symbol Parameter Conditions Min Typ Max Units VTH Differential Input Voltage V OUT = VOH or VOL −200 ±35 +200 mV −7V < VCM < +7V VHYST Input Hysteresis V CM = 0V 70 mV R IN Input Resistance V IN = −7V, +7V 5.0 6.8 10 k Ω (Other Input= GND) IIN Input Current V IN = +10V, Other Input= GND +1.1 +1.5 mA (Under Test) V IN = −10V, Other Input= GND −2.0 −2.5 mA VOH High Level Output Voltage V CC = Min., V(DIFF)= +1V 3.8 4.2 V IOUT = −6.0 mA VOL Low Level Output Voltage V CC = Max., V(DIFF)= −1V 0.2 0.3 V IOUT = 6.0 mA VIH Enable High Input Level Voltage 2.0 V CC V VIL Enable Low Input Level Voltage GND 0.8 V IOZ TRI-STATE Output Leakage Current VOUT = VCC or GND, EN = VIL ±0.5 ±5.0 µA II Enable Input Current V IN = VCC or GND ±1.0 µA ICC Quiescent Power Supply Current V CC = Max., V(DIFF)= +1V 48 69 mA www.national.com 2

VCC = 5V ±10% (Figures 1, 2, 3) Symbol Parameter Conditions Min Typ Max Units tPLH , Propagation Delay C L = 50 pF tPHL Input to Output V DIFF = 2.5V 10 19 30 ns VCM = 0V tSK Skew C L = 50 pF VDIFF = 2.5V 0 2 4 ns VCM = 0V tRISE, Output Rise and C L = 50 pF tFALL Fall Times V DIFF = 2.5V 4 9 ns VCM = 0V tPLZ , Propagation Delay C L = 50 pF tPHZ ENABLE to Output R L = 1000Ω 13 18 ns VDIFF = 2.5V tPZL , Propagation Delay C L = 50 pF tPZH ENABLE to Output R L = 1000Ω 13 21 ns VDIFF = 2.5V Note 1:Absolute Maximum Ratings are those values beyond which the safety of the device cannot be guaranteed. They are not meant to imply that the device should be operated at these limits. The table of “Electrical Characteristics” provides conditions for actual device operation. Note 2:Unless otherwise specified, all voltages are referenced to ground. Note 3:Unless otherwise specified, Min/Max limits apply across the operating temperature range. All typicals are given for VCC = 5V and TA = 25˚C. Note 4:Ratings apply to ambient temperature at 25˚C. Above this temperature derate SSOP (MEA) Package 10.9 mW/˚C. Note 5:ESD Rating: HEM (1.5 kΩ , 100 pF) Inputs≥ 2000V Outputs≥ 1000V EIAJ (0Ω , 200 pF) All Pins≥ 350V www.national.com3

FIGURE 1. Propagation Delays

delay from one DS89C386 to another DS89C386. skew is 20 ns and 0 ns maximum and minimum respectively. TABLE 1. DS89C386 Skew Table Note tSK (diff.) inTable 1is the same as tSK in the datasheet. specified from characterization data. help when designing the DS89C386 into most applications. Note 7:Failsafe (open inputs) is maintained over entire common mode range and operating range±10V. FIGURE 9. Receiver Input Equivalent Circuit

TABLE 2. Device Pin Names and Descriptions

38 V CC Positive Power Supply Pin +5±10%

FIGURE 10. Receiver Output Equivalent Circuit FIGURE 11. Receiver Enable Equivalent Circuit

Physical Dimensionsinches (millimeters) unless otherwise noted LIFE SUPPORT POLICY NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DE- VICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF NATIONAL SEMI- CONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or sys- tems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and whose fail- ure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user. 2. A critical component in any component of a life support device or system whose failure to perform can be rea- sonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. National Semiconductor Corporation Americas Tel: 1-800-272-9959 Fax: 1-800-737-7018 Email: support@nsc.com www.national.com National Semiconductor Europe Fax: +49 (0) 1 80-530 85 86 Email: europe.support@nsc.com Deutsch Tel: +49 (0) 1 80-530 85 85 English Tel: +49 (0) 1 80-532 78 32 Français Tel: +49 (0) 1 80-532 93 58 Italiano Tel: +49 (0) 1 80-534 16 80 National Semiconductor Asia Pacific Customer Response Group Tel: 65-2544466 Fax: 65-2504466 Email: sea.support@nsc.com National Semiconductor Japan Ltd. Tel: 81-3-5620-6175 Fax: 81-3-5620-6179 48-Lead (0.300" Wide) Molded Shrink Small Outline Package, JEDEC Order Number DS89C386TMEA DS89C386 Twelve Channel CMOS Differential Line Receiver National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.