74LVX245

74LVX245 Low Voltage Octal Bidirectional Transceiver April 1993 Revised April 2005 74LVX245 Low Voltage Octal Bidirectional Transceiver General Description The LVX245 contains eight non-inverting bidirectional buffers and is intended for bus-oriented applications. The Transmit/Receive (T/R) input determines the direction of data flow through the bidirectional transceiver. Transmit (active-HIGH) 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 impedance condition. Features s Ideal for low power/low noise 3.3V applications s Guaranteed simultaneous switching noise level and dynamic threshold performance Ordering Code Order Number 74LVX245M 74LVX245SJ 74LVX245MTC Package Number M20B M20D MTC20 Package Description 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide Pb-Free 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Pb-Free package per JEDEC J-STD-020B. Logic Symbols Connection Diagram Pin Descriptions Pin Names OE T/R A0–A7 B0–B7 Description Truth Table Inputs Outputs OE T/R L H X Bus B Data to Bus A Bus A Data to Bus B HIGH-Z State X Immaterial Output Enable Input Transmit/Receive Input Side A Inputs or 3-STATE Outputs Side B Inputs or 3-STATE Outputs L L H H HIGH Voltage Level L LOW Voltage Level © 2005 Fairchild Semiconductor Corporation DS011597 www.fairchildsemi.com 74LVX245 Absolute Maximum Ratings(Note 1) Supply Voltage (VCC) DC Input Diode Current (IIK) VI 0.5V to 7.0V 20 mA 0.5V to 7V 20 mA 20 mA 0.5V to VCC  0.5V r25 mA r75 mA 65qC to 150qC 180 mW Recommended Operating Conditions (Note 2) Supply Voltage (VCC) Input Voltage T/R, OE (VI) Bus I/O Voltage (VI/O) Operating Temperature (TA) Input Rise and Fall Time ('t/'V) 2.0V to 3.6V 0V to 5.5V 0V to VCC 0.5V DC Input Voltage T/R, OE (VI) DC Diode Current (IOK) VO VO 40qC to 85qC 0 ns/V to 100 ns/V 0.5V VCC  0.5V DC Bus I/O Voltage (VI/O) DC Output Source or Sink Current (IO) DC VCC or Ground Current (ICC or IGND) Storage Temperature (TSTG) Power Dissipation Note 1: 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 tables are not guaranteed at the absolute maximum ratings. The “Recommended Operating Conditions” table will define the conditions for actual device operation. Note 2: Unused inputs must be held HIGH or LOW. They may not float. DC Electrical Characteristics Symbol VIH Parameter HIGH Level Input Voltage VIL LOW Level Input Voltage VOH HIGH Level Output Voltage VOL LOW Level Output Voltage IOZ 3-STATE Output Off-State Current IIN ICC Input Leakage Current Quiescent Supply Current 3.6 3.6 VCC 2.0 3.0 3.6 2.0 3.0 3.6 2.0 3.0 3.0 2.0 3.0 3.0 3.6 1.9 2.9 2.58 0.0 0.0 0.1 0.1 0.36 2.0 3.0 TA Min 1.5 2.0 2.4 0.5 0.8 0.8 1.9 2.9 2.48 0.1 0.1 0.44 V VIN V 25qC Typ Max TA 40qC to 85qC Min 1.5 2.0 2.4 0.5 0.8 0.8 Max Units Conditions V V VIN VIH or VIL IOH IOH IOH VIH or VIL IOL IOL IOL VIN VOUT VIH or VIL VCC or GND 5.5V or GND VCC or GND 50 PA 50 PA 4 mA 50 PA 50 PA 4 mA r0.25 r2.5 PA r0.1 4.0 r1.0 40.0 PA PA VIN VIN Noise Characteristics Symbol VOLP VOLV VIHD VILD (Note 3) VCC (V) TA Typ 0.5 25qC Limit 0.8 V V V V Units Conditions CL (pF) 50 50 50 50 Parameter Quiet Output Maximum Dynamic VOL Quiet Output Minimum Dynamic VOL Minimum HIGH Level Dynamic Input Voltage Maximum LOW Level Dynamic Input Voltage tf 3 ns 3.3 3.3 3.3 3.3 0.5 0.8 2.0 0.8 Note 3: Input tr www.fairchildsemi.com 2 74LVX245 AC Electrical Characteristics Symbol tPLH tPHL 3.3 r 0.3 tPZL tPZH 3-STATE Output Enable Time 3.3 r 0.3 tPLZ tPHZ tOSLH tOSHL 3-STATE Output Disable Time Output to Output Skew (Note 4) 2.7 3.3 r 0.3 2.7 3.3 |tPLHm  tPLHn|, tOSHL Parameter Propagation Delay Time VCC (V) 2.7 Min TA 25qC Typ 6.1 8.6 4.7 7.2 9.0 11.5 7.1 9.6 11.5 9.6 Max 10.7 14.2 6.8 10.1 16.9 20.4 11.0 14.5 18.0 12.8 1.5 1.5 |t PHLm  t PHLn| TA 40qC to 85qC Min 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 Max 13.5 17.0 8.0 11.5 20.5 24.0 13.0 16.5 21.0 14.5 1.5 1.5 Units CL ns CL CL CL CL ns CL CL CL ns ns CL CL CL Conditions 15 pF 50 pF 15 pF 50 pF 15 pF, RL 50 pF, RL 15 pF, RL 50 pF, RL 50 pF, RL 50 pF, RL 1 k: 1 k: 1 k: 1 k: 1 k: 1 k: 2.7 50 pF (Note 4) Note 4: Parameter guaranteed by design. tOSLH Capacitance Symbol CIN CI/O CPD Parameter Min Input Capacitance T/R, OE Output Capacitance An, Bn Power Dissipation Capacitance (Note 5) TA 25qC Typ 4 8 21 Max 10 TA 40qC to 85qC Min Max 10 Units pF pF pF Note 5: CPD is defined as the value of the internal equivalent capacitance which is calculated from the operating current consumption without load. 3 www.fairchildsemi.com 74LVX245 Physical Dimensions inches (millimeters) unless otherwise noted 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide Package Number M20B www.fairchildsemi.com 4 74LVX245 Physical Dimensions inches (millimeters) unless otherwise noted (Continued) Pb-Free 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide Package Number M20D 5 www.fairchildsemi.com 74LVX245 Low Voltage Octal Bidirectional Transceiver Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide Package Number MTC20 Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and Fairchild reserves the right at any time without notice to change said circuitry and specifications. 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