DS8922_04 NSC | Alldatasheet

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n 12 ns typical propagation delay n Output skew — ±0.5 ns typical n Meets the requirements of EIA Standard RS-422 n Complementary Driver Outputs n High differential or common-mode input voltage ranges of ±7V n ±0.2V receiver sensitivity over the input voltage range n Receiver input fail-safe circuitry n Receiver input hysteresis — 70 mV typical n Glitch free power up/down n TRI-STATE outputs Connection Diagrams DS8922A Dual-In-Line 00851101 Order Number DS8922M, DS8922N, DS8922AM or DS8922AN See NS Package Number M16A or N16E TRI-STATE® is a registered trademark of National Semiconductor Corp. July 2004 DS8922/DS8922A/DS8923A TRI-STATE RS-422 Dual Differential Line Driver and Receiver Pairs © 2004 National Semiconductor Corporation DS008511 www.national.com

Connection Diagrams (Continued) DS8923A Dual-In-Line 00851102 Order Number DS8923AM, DS8923AN, See NS Package Number M16A or N16E DS8922/22A EN1 EN2 RO1 RO2 DO1 DO2 0 0 ACTIVE ACTIVE ACTIVE ACTIVE 1 0 HI-Z ACTIVE HI-Z ACTIVE 0 1 ACTIVE HI-Z ACTIVE HI-Z 1 1 HI-Z HI-Z HI-Z HI-Z DS8923A DEN REN RO1 RO2 DO1 DO2 0 0 ACTIVE ACTIVE ACTIVE ACTIVE 1 0 ACTIVE ACTIVE HI-Z HI-Z 0 1 HI-Z HI-Z ACTIVE ACTIVE 1 1 HI-Z HI-Z HI-Z HI-Z DS8922/DS8922A/DS8923A www.national.com 2

Absolute Maximum Ratings(Note 1) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage 7V Drive Input Voltage −0.5V to +7V Output Voltage 5.5V Receiver Output Sink Current 50 mA Receiver Input Voltage ±10V Differential Input Voltage ±12V Maximum Package Power Dissipation @ +25˚C M Package 1300 mW N Package 1450 mW Derate M Package 10.4 mW/˚C above +25˚C Derate N Package 11.6 mW/˚C above +25˚C Storage Temperature Range −65˚C to +165˚C Lead Temp. (Soldering, 4 seconds) 260˚C ESD Rating (HBM) 2000V+ Recommended Operating Conditions Min Max Units Supply Voltage 4.5 5.5 V Temperature (T A) 0 70 ˚C DS8922/22A and DS8923A Electrical Characteristics(Notes 2, 3, 4) Symbol Conditions Min Typ Max Units RECEIVER V TH −7V ≤ VCM ≤ +7V −200 ±35 +200 mV VHYST −7V ≤ VCM ≤ +7V 15 70 mV RIN V IN = −7V, +7V (Other Input = GND) 4.0 6.0 k Ω IIN VIN = 10V 3.25 mA VIN = −10V −3.25 mA VOH V CC = MIN, IOH = − 400 µA 2.5 V VOL V CC = MAX, IOL = 8 mA 0.5 V ISC V CC = MAX, VOUT = 0V −15 −100 mA DRIVER V OH V CC = MIN, IOH = −20 mA 2.5 V VOL V CC = MIN, IOL = +20 mA 0.5 V IOFF V CC = 0V, VOUT = 5.5V 100 µA VT 2.0 V |VOS–V OS | 0.4 V ISC V CC = MAX, VOUT = 0V −30 −150 mA DRIVER and RECEIVER I OZ VOUT = 2.5V 50 µA TRI-STATE V CC = MAX V OUT = 0.4V −50 µA Leakage I CC VCC = MAX ACTIVE 76 mA TRI-STATE 78 mA DRIVER and ENABLE INPUTS V IH 2.0 V VIL 0.8 V IIL V CC = MAX, VIN = 0.4V −40 −200 µA IIH V CC = MAX, VIN = 2.7V 20 µA II V CC = MAX, VIN = 7.0V 100 µA VCL V CC = MIN, IIN = −18 mA −1.5 V DS8922/DS8922A/DS8923A www.national.com3

Receiver Switching Characteristics (Figures 1, 2, 3) Parameter Conditions Min Typ Max Units 8922 8922A/23A TpLH CL = 30 pF 12 22.5 20 ns TpHL CL = 30 pF 12 22.5 20 ns |TpLH–T pHL| CL = 30 pF 0.5 5 3.5 ns Skew (Channel to Channel) CL = 30 pF 0.5 3.0 2.0 ns T pLZ CL = 15 pF S2 Open 15 ns TpHZ CL = 15 pF S1 Open 15 ns TpZL CL = 30 pF S2 Open 20 ns TpZH CL = 30 pF S1 Open 20 ns Driver Switching Characteristics Parameter Conditions Min Typ Max Units 8922 8922A/23A SINGLE ENDED CHARACTERISTICS(Figures 4, 5, 6, 8) TpLH C L=3 0p F 1 2 1 5 1 5 n s TpHL C L=3 0p F 1 2 1 5 1 5 n s TTLH CL = 30 pF 5 10 10 ns TTHL CL = 30 pF 5 10 10 ns |TpLH–T pHL| C L=3 0p F 0 . 5 n s Skew CL = 30 pF (Note 5) 0.5 5 3.5 ns Skew (Channel to Channel) 0.5 3.0 2.0 ns T pLZ C L=3 0p F 1 5 n s TpHZ C L=3 0p F 1 5 n s TpZL C L=3 0p F 2 0 n s TpZH C L=3 0p F 2 0 n s DIFFERENTIAL SWITCHING CHARACTERISTICS(Note 6), (Figure 4) TpLH C L=3 0p F 1 2 1 5 1 5 n s TpHL C L=3 0p F 1 2 1 5 1 5 n s |TpLH–T pHL| CL = 30 pF 0.5 6.0 2.75 ns 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: All currents into device pins are shown as positive values; all currents out of the device are shown as negative; all voltages are referenced to ground unless otherwise specified. All values shown as max or min are classified on absolute value basis. Note 3: All typical values are V CC =5 V ,TA = 25˚C. Note 4: Only one output at a time should be shorted. Note 5: Difference between complementary outputs at the 50% point. Note 6: Differential Delays are defined as calculated results from single ended rise and fall time measurements. This approach in establishing AC performan ce specifications has been taken due to limitations of available Automatic Test Equipment (ATE). The calculated ATE results assume a linear transition between measurement points and are a result of the following equations: Where: Tcp = Crossing Point Tra, Trb, Tfa and Tfb are time measurements with respect to the input. DS8922/DS8922A/DS8923A www.national.com 4

Typical Performance Characteristics (DS8923A) Driver VOH vs IOH vs Temperature Driver V OH vs IOH vs VCC 00851114 00851115 Driver VOL vs IOL vs Temperature Driver V OL vs IOL vs VCC 00851116 00851117 Receiver VOH vs IOH vs Temperature Receiver V OH vs IOH vs VCC 00851118 00851119 DS8922/DS8922A/DS8923A www.national.com 8

Typical Performance Characteristics(DS8923A) (Continued) Receiver VOL vs IOL vs Temperature Receiver V OL vs IOL vs VCC 00851120 00851121 Driver Differential Propagation Delay vs Temperature Driver Differential Propagation Delay vs VCC 00851122 00851123 Receiver Propagation Delay vs Temperature Receiver Propagation Delay vs VCC 00851124 00851125 DS8922/DS8922A/DS8923A www.national.com9

Typical Performance Characteristics(DS8923A) (Continued) Driver VOD vs Temperature Driver V OD vs VCC 00851126 00851127 Driver VOD vs RL Driver Differential Transition Time vs Temperature 00851128 00851129 Driver Differential Transition Time vs VCC Supply Current vs Temperature 00851130 00851131 DS8922/DS8922A/DS8923A www.national.com 10

Typical Performance Characteristics(DS8923A) (Continued) Supply Current vs VCC ICC vs Driver Switching Frequency 00851132 00851133 Driver Short Circuit Current vs Temperature Driver Short Circuit Current vs VCC 00851134 00851135 Receiver Short Circuit Current vs Temperature Receiver Short Circuit Current vs VCC 00851136 00851137 DS8922/DS8922A/DS8923A www.national.com11

ST504 and ST412 Applications 00851112 DS8922/DS8922A/DS8923A www.national.com 12

Physical Dimensions inches (millimeters) unless otherwise noted Order Number DS8922M, DS8922AM, or DS8923AM Molded Dual-In-Line Package (N) Order Number DS8922N, DS8922AN, or DS8923AN DS8922/DS8922A/DS8923A www.national.com13

NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and whose failure 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 is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. BANNED SUBSTANCE COMPLIANCE National Semiconductor certifies that the products and packing materials meet the provisions of the Customer Products Stewardship Specification (CSP-9-111C2) and the Banned Substances and Materials of Interest Specification (CSP-9-111S2) and contain no ‘‘Banned Substances’’ as defined in CSP-9-111S2. National Semiconductor Americas Customer Support Center Email: new.feedback@nsc.com Tel: 1-800-272-9959 National Semiconductor Europe Customer Support Center Fax: +49 (0) 180-530 85 86 Email: europe.support@nsc.com Deutsch Tel: +49 (0) 69 9508 6208 English Tel: +44 (0) 870 24 0 2171 Français Tel: +33 (0) 1 41 91 8790 National Semiconductor Asia Pacific Customer Support Center Email: ap.support@nsc.com National Semiconductor Japan Customer Support Center Fax: 81-3-5639-7507 Email: jpn.feedback@nsc.com Tel: 81-3-5639-7560 www.national.com DS8922/DS8922A/DS8923A TRI-STATE RS-422 Dual Differential Line Driver and Receiver Pairs National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the righ t at any time without notice to change said circuitry and specifications.