74LVX245MSCX

74LVX245 Low Voltage Octal Bidirectional Transceiver January 1996 74LVX245 Low Voltage Octal Bidirectional Transceiver General Description The LVX245 contains eight non-inverting bidirectional buffers is intended for bus-oriented applications The Transmit Receive (T R) input determines the direction of data flow through the bidirectional transceiver Transmit (activeHIGH) enables data from A ports to B ports Receive (active-LOW) enables data from B ports to A ports The Output Enable input when HIGH disables both A and B ports by placing them in a HIGH-Z condition Features Y Y Y Ideal for low power low noise 3 3V applications Available in SOIC JEDEC SOIC EIAJ and TSSOP packages Guaranteed simultaneous switching noise level and dynamic threshold performance Logic Symbols Connection Diagram Pin Assignment for SOIC and TSSOP TL F 11597–1 TL F 11597 – 3 TL F 11597 – 5 Pin Names OE TR A 0 – A7 B 0 – B7 Description Output Enable Input Transmit Receive Input Side A TRI-STATE Inputs or TRI-STATE Outputs Side B TRI-STATE Inputs or TRI-STATE Outputs Truth Table Inputs OE L L H H e HIGH Voltage Level Outputs TR L H X Bus B Data to Bus A Bus A Data to Bus B HIGH-Z State X e Immaterial L e LOW Voltage Level SOIC JEDEC Order Number See NS Package Number 74LVX245M 74LVX245MX M20B SOIC EIAJ 74LVX245SJ 74LVX245SJX M20D TSSOP 74LVX245MTC 74LVX245MTCX MTC20 TRI-STATE is a registered trademark of National Semiconductor Corporation C1996 National Semiconductor Corporation TL F 11597 RRD-B30M17 Printed in U S A http www national com Absolute Maximum Ratings (Note) If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications b 0 5V to a 7 0V Supply Voltage (VCC) DC Input Diode Current (IIK) b 20 mA VI e b0 5V b 0 5V to 7V DC Input Voltage T R OE (VI) DC Diode Current (IOK) b 20 mA VO e b0 5V a 20 mA VO e VCC a 0 5V b 0 5V to VCC a 0 5V DC Bus I O Voltage (VI O) DC Output Source g 25 mA or Sink Current (IO) DC VCC or Ground Current g 75 mA (ICC or IGND) b 65 C to a 150 C Storage Temperature (TSTG) Power Dissipation 180 mW Note The ‘‘Absolute Maximum Ratings’’ are those values beyond which the safety of the device cannot be guaranteed The device should not be operated at these limits The parametric values defined in the ‘‘Electrical Characteristics’’ table are not guaranteed at the absolute maximum ratings The ‘‘Recommended Operating Conditions’’ table will define the conditions for actual device operation Recommended Operating Conditions Supply Voltage (VCC) Input Voltage T R OE (VI) Bus I O Voltage (VI O) Operating Temperature (TA) Input Rise and Fall Time (Dt DV) 2 0V to 3 6V 0V to 5 5V 0V to VCC b 40 C to a 85 C 0 ns V to 100 ns V DC Electrical Characteristics 74LVX245 Symbol Parameter VCC TA e a 25 C Min VIH High Level Input Voltage Low Level Input Voltage High Level Output Voltage Low Level Output Voltage TRI-STATE Output Off-State Current Input Leakage Current Quiescent Supply Current 20 30 36 20 30 36 20 30 30 20 30 30 19 29 2 58 20 30 00 00 01 01 0 36 g 0 25 74LVX245 TA e b 40 C to a 85 C Min 15 20 24 05 08 08 19 29 2 48 01 01 0 44 g2 5 Units Conditions Typ Max Max V 05 08 08 15 20 24 VIL V VIN e VIH or VIL V VIN e VIH or VIL V IOH e b50 mA IOH e b50 mA IOH e b4 mA IOL e 50 mA IOL e 50 mA IOL e 4 mA VOH VOL IOZ 36 mA VIN e VIH or VIL VOUT e VCC or GND IIN g0 1 g1 0 VIN e 5 5V or GND mA 36 40 36 40 0 ICC VIN e VCC or GND mA http www national com 2 Noise Characteristics 74LVX245 Symbol Parameter VCC (V) 33 33 33 33 TA e 25 C Typ VOLP VOLV VIHD VILD Quiet Output Maximum Dynamic VOL Quiet Output Minimum Dynamic VOL Minimum High Level Dynamic Input Voltage Maximum Low Level Dynamic Input Voltage 05 b0 5 Units Conditions CL (pF) 50 50 50 50 Limit 08 b0 8 V V V V 20 08 Note Input tr e tf e 3 ns AC Electrical Characteristics 74LVX245 Symbol Parameter VCC (V) TA e a 25 C Min tPLH tPHL Propagation Delay Time 27 Typ 61 86 3 3 g0 3 tPZL tPZH TRI-STATE Output Enable Time 47 72 27 90 11 5 3 3g0 3 tPLZ tPHZ tOSLH tOSHL TRI-STATE Output Disable Time Output to Output Skew (Note 1) 27 3 3 g0 3 27 71 96 11 5 96 Max 10 7 14 2 68 10 1 16 9 20 4 11 0 14 5 18 0 12 8 15 74LVX245 TA e b 40 C to a 85 C Min 10 10 10 10 10 10 10 10 10 10 Max 13 5 17 0 80 11 5 20 5 24 0 13 0 16 5 21 0 14 5 15 ns ns ns ns CL e 15 pF CL e 50 pF CL e 15 pF CL e 50 pF CL e 15 pF RL e 1 kX CL e 50 pF RL e 1 kX CL e 15 pF RL e 1 kX CL e 50 pF RL e 1 kX CL e 50 pF RL e 1 kX CL e 50 pF RL e 1 kX CL e 50 pF (Note 1) Units Conditions Note 1 Parameter guaranteed by design tOSLH e l tPLHm b tPLHn l tOSHL e l tPHLm b tPHLn l Capacitance 74LVX245 Symbol Parameter TA e a 25 C Min CIN CI O CPD Input Capacitance T R OE Output Capacitance An Bn Power Dissipation Capacitance (Note 1) Typ 4 8 21 Max 10 74LVX245 TA e b 40 C to a 85 C Min Max 10 pF pF pF Units Note 1 CPD is defined as the value of the internal equivalent capacitance which is calculated from the operating current consumption without load CPD c VCC c fIN a ICC Average operating current can be obtained by the equation ICC(opr ) e 8 (per bit) 3 http www national com 74LVX245 Ordering Information The device number is used to form part of a simplified purchasing code where the package type and temperature range are defined as follows TL F 11597 – 7 Physical Dimensions inches (millimeters) unless otherwise noted 20-Lead Small Outline Integrated Circuit (M) Order Number 74LVX245M or 74LVX245MX NS Package Number M20B http www national com 4 Physical Dimensions inches (millimeters) unless otherwise noted 20-Lead Small Outline Package EIAJ SOIC (SJ) Order Number 74LVX245SJ or 74LVX245SJX NS Package Number M20D 5 http www national com 74LVX245 Low Voltage Octal Bidirectional Transceiver Physical Dimensions All dimensions in millimeters (Continued) 20-Lead Thin Shrink Small Outline Package JEDEC Order Number 74LVX245MTC or 74LVX245MTCX NS Package Number MTC20 LIFE SUPPORT POLICY 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 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 National Semiconductor Corporation Americas Tel 1(800) 272-9959 Fax 1(800) 737-7018 Email support nsc com 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 http www national com National Semiconductor Europe Fax a49 (0) 180-530 85 86 Email europe support nsc com Deutsch Tel a49 (0) 180-530 85 85 English Tel 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