DS3695

DS3695 NSC | Alldatasheet

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n Meets EIA standard RS485 for multipoint bus transmission and is compatible with RS-422 n 15 ns driver propagation delays with 2 ns skew (typical) n Single +5V supply n −7V to +12V bus common mode range permits±7V ground difference between devices on the bus n Thermal shutdown protection n High impedance to bus with driver in TRI-STATE or with power off, over the entire common mode range allows the unused devices on the bus to be powered down n Combined impedance of a driver output and receiver input is less than one RS485 unit load, allowing up to 32 transceivers on the bus n 70 mV typical receiver hysteresis Connection and Logic Diagrams Note 1:TS pin was LF (Line Fault) in previous datasheets and reports the occurrence of a thermal shutdown of the device. TRI-STATE® is a registered trademark of National Semiconductor Corporation. DS010408-1 Top View DS010408-12 Top View DS010408-13 Top View Order Number DS3695N, DS3695TN, DS3696N, or DS3697N See NS Package Number N08E May 1998 DS3695/DS3695T/DS3696/DS3697 Multipoint RS485/RS422 Transceivers/Repeaters © 1998 National Semiconductor Corporation DS010408 www.national.com

Absolute Maximum Ratings(Note 2) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage, V CC 7V Control Input Voltages 7V Driver Input Voltage 7V Driver Output Voltages +15V/−10V Receiver Input Voltages (DS3695, DS3696) +15V/−10V Receiver Common Mode Voltage (DS3697) ±25V Receiver Output Voltage 5.5V Continuous Power Dissipation @ 25˚C N Package 1.07W (Note Storage Temperature Range −65˚C to +150˚C Lead Temperature (Soldering, 4 sec.) 260˚C Recommended Operating Conditions Min Max Units Supply Voltage, VCC 4.75 5.25 V Bus Voltage −7 +12 V Operating Free Air Temp. (T Commercial 0 +70 ˚C Industrial −40 +85 ˚C Electrical Characteristics(Notes 3, 4) 0˚C ≤ TA ≤ +70˚C, 4.75V< VCC < 5.25V unless otherwise specified Symbol Parameter Conditions Min Typ Max Units VOD1 Differential Driver Output I O = 05 V Voltage (Unloaded) VOD2 Differential Driver Output ( Figure 1)R = 50Ω ; (RS-422) (Note Voltage (with Load) R = 27Ω ; (RS-485) 1.5 V ΔVOD Change in Magnitude of Driver Differential Output Voltage for 0.2 V Complementary Output States VOC Driver Common Mode Output Voltage ( Figure 1)R = 27Ω 3.0 V Δ|VOC | Change in Magnitude of Driver Common Mode Output Voltage 0.2 V for Complementary Output States VIH Input High Voltage 2V VIL Input Low Voltage DI, DE, 0.8 V VCL Input Clamp Voltage RE , E, RE /DE IIN = −18 mA −1.5 V IIL Input Low Current V IL = 0.4V −200 µA IIH Input High Current V IH = 2.4V 20 µA IIN Input Current DO/RI, DO /RI VCC = 0V or 5.25V VIN = 12V +1.0 mA RI, RI RE /DE or DE= VIN = −7V −0.8 mA IOZD TRI-STATE Current DO, DO VCC = 0V or 5.25V, E= 0V ±100 µA DS3697 & DS3698 −7V < VO < +12V VTH Differential Input Threshold −7V ≤ VCM ≤ +12V −0.2 +0.2 V Voltage for Receiver ΔVTH Receiver Input Hysteresis V CM = 0V 70 mV VOH Receiver Output High Voltage I OH = −400 µA 2.4 V VOL Output Low Voltage RO I OL = 16 mA (Note 6) 0.5 V TS IOL = 8 mA 0.45 V IOZR OFF-State (High Impedance) V CC = Max ±20 µA Output Current at Receiver 0.4V ≤ VO ≤ 2.4V R IN Receiver Input Resistance −7V ≤ VCM ≤ +12V 12 k Ω www.national.com 2

Electrical Characteristics(Notes 3, 4) (Continued) 0˚C ≤ TA ≤ +70˚C, 4.75V< VCC < 5.25V unless otherwise specified Symbol Parameter Conditions Min Typ Max Units ICC Supply Current No Load Driver Outputs Enabled 42 60 mA (Note 6) Driver Outputs Disabled 27 40 mA IOSD Driver Short-Circuit Output Current VO = −7V (Note 6) −250 mA VO = +12V (Note 6) +250 mA IOSR Receiver Short-Circuit Output Current VO = 0V −15 −85 mA Note 2:“Absolute Maximum Ratings” are those 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 tables of “Electrical Characteristics” provide conditions for actual device operation. Note 3:All currents into device pins are positive; all currents out of device pins are negative. All voltages are referenced to device ground unless otherwise specified. Note 4:All typicals are given for VCC = 5V and TA = 25˚C. Note 5:Derate linearly at 11.1 mW/˚C to 570 mW at 70˚C. Note 6:All limits for which Note 5 is applied must be derated by 10% for DS3695T and DS3696T. Other parameters remain the same for this extended temperature range device (−40˚C≤ TA ≤ +85˚C). Switching Characteristics(Notes 4, 7) 0˚C≤ TA ≤ +70˚C, 4.75V< VCC < 5.25V unless otherwise specified Receiver Switching Characteristics (Figures 2, 3, 4) Symbol Conditions Min Typ Max Units tPLH C L = 15 pF 15 25 37 ns tPHL S1 and S2 15 25 37 ns |tPLH –tPHL | Closed 0 ns tPLZ C L = 15 pF, S2 Open 5 12 16 ns tPHZ C L = 15 pF, S1 Open 5 12 16 ns tPZL C L = 15 pF, S2 Open 7 15 20 ns tPZH C L = 15 pF, S1 Open 7 15 20 ns Driver Switching Characteristics Symbol Conditions Min Typ Max Units SINGLE ENDED CHARACTERISTICS (Figures 5, 6, 7) tPLH R LDIFF = 60Ω 91 5 2 2 n s tPHL C L1 = C L2 = 100 pF 9 15 22 ns tSKEW |tPLH –tPHL |2 8 n s tPLZ C L = 15 pF, S2 Open 7 15 30 ns tPHZ C L = 15 pF, S1 Open 7 15 30 ns tPZL C L = 100 pF, S2 Open 30 35 50 ns tPZH C L = 100 pF, S1 Open 30 35 50 ns DIFFERENTIAL CHARACTERISTICS (Figures 5, 8) tr,tf R LDIFF = 60Ω 61 0 1 8 n s C L1 = C L2 = 100 pF Note 7:Switching Characteristics apply for DS3695, DS3695T, DS3696, DS3697 only. www.national.com3

DS3695/DS3696 Transmitting Inputs Thermal Outputs RE DE DI Shutdown DO DO TS * (DS3696 Only) X 1 1 OFF 0 1 H X 1 0 OFF 1 0 H X 0 X OFF Z Z H X1X O N ZZ L DS3695/DS3696 Receiving Inputs Outputs RE DE RI–RI RO TS * (DS3696 Only) 00 ≥ +0.2V 1 H 00 ≤ −0.2V 0 H

10 X Z H

(DS3697 Only) 1 ≥ +0.2V OFF 0 1 1 1 ≤ −0.2V OFF 1 0 0

0 X OFF Z Z Z

1 ≥ +0.2V ON Z Z 1 1 ≤ −0.2V ON Z Z 0 X — Don’t care condition Z — High impedance state *TS is an “open collector” output with an on-chip 10 kΩ pull-up resistor that reports the occurrence of a thermal shutdown of the device. Typical Application DS010408-11 Note:Repeater control logic not shown, see AN-702. www.national.com 6

Typical Performance Characteristics Driver VOH vs IOH vs Temperature DS010408-19 Driver VOH vs IOH vs VCC Driver VOH vs IOH vs VCC DS010408-20 Driver VOL vs IOL vs Temperature DS010408-21 Driver VOH vs IOH vs VCC DS010408-22 Driver Differential Propagation Delay vs Temperature DS010408-23 Driver Differential Propagation Delay vs V CC DS010408-24 Driver Single-Ended Propagation Delay vs Temperature DS010408-25 Driver Single-Ended Propagation Delay vs V CC DS010408-26 Driver Transition Time vs Temperature DS010408-27 www.national.com7

Typical Performance Characteristics(Continued) Driver Transition Time vs VCC DS010408-28 Cable Length vs Data Rate DS010408-29 Supply Current vs Temperature DS010408-30 Supply Current vs Power Supply Voltage DS010408-31 Driver ICC vs Switching Frequency DS010408-32 Driver Short Circuit Current vs Temperature DS010408-33 Receiver VOH vs IOH vs Temperature DS010408-34 Receiver VOH vs IOH vs VCC DS010408-35 www.national.com 8

Typical Performance Characteristics(Continued) Receiver VOL vs IOL vs Temperature DS010408-36 Receiver VOL vs IOL vs VCC DS010408-37 Receiver Differential Propagation Delay vs Temperature DS010408-38 Receiver Differential Propagation Delay vs V CC DS010408-39 Receiver Short Circuit Current vs Temperature DS010408-40 Receiver Short Circuit Current vs Power Supply DS010408-41 Receiver Non-Inverting Input Current vs Temperature DS010408-42 Receiver Non-Inverting Input Current vs Power Supply Voltage DS010408-43 Receiver Inverting Input Current vs Temperature DS010408-44 www.national.com9

Typical Performance Characteristics(Continued) Receiver Inverting Input Current vs Power Supply Voltage DS010408-45 Hysteresis and Differential Transition Voltage vs Temperature DS010408-46 Hysteresis and Differential Transition Voltage vs V CC DS010408-47 www.national.com 10

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 8-Lead Molded Dual-In-Line Package (N) Order Number DS3695N, DS3696N, DS3697N, or DS3695TN DS3695/DS3695T/DS3696/DS3697 Multipoint RS485/RS422 Transceivers/Repeaters 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.