Revised April 2005 74LVX245 Low Voltage Octal Bidirectional Transceiver General Description Features 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. Ideal for low power/low noise 3.3V applications Guaranteed simultaneous switching noise level and dynamic threshold performance Ordering Code Order Number 74LVX245M 74LVX245SJ 74LVX245MTC Package Number Package Description M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide M20D Pb-Free 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide MTC20 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 Truth Table Pin Names Inputs Description Outputs OE T/R OE Output Enable Input L L Bus B Data to Bus A T/R Transmit/Receive Input L H Bus A Data to Bus B A0-A7 Side A Inputs or 3-STATE Outputs H X HIGH-Z State B0-B7 Side B Inputs or 3-STATE Outputs H HIGH Voltage Level L LOW Voltage Level (c) 2005 Fairchild Semiconductor Corporation DS011597 X Immaterial www.fairchildsemi.com 74LVX245 Low Voltage Octal Bidirectional Transceiver April 1993 74LVX245 Absolute Maximum Ratings(Note 1) Recommended Operating Conditions (Note 2) 0.5V to 7.0V Supply Voltage (VCC) DC Input Diode Current (IIK) VI Supply Voltage (VCC) 0.5V 20 mA 0.5V to 7V DC Input Voltage T/R, OE (VI) 0V to VCC 40qC to 85qC Operating Temperature (TA) 0.5V VCC 0.5V VO 0V to 5.5V Bus I/O Voltage (VI/O) DC Diode Current (IOK) VO 2.0V to 3.6V Input Voltage T/R, OE (VI) 20 mA 20 mA 0.5V to VCC 0.5V DC Bus I/O Voltage (VI/O) Input Rise and Fall Time ('t/'V) DC Output Source 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. r25 mA or Sink Current (IO) DC VCC or Ground Current r75 mA 65qC to 150qC (ICC or IGND) Storage Temperature (TSTG) Power Dissipation 0 ns/V to 100 ns/V Note 2: Unused inputs must be held HIGH or LOW. They may not float. 180 mW DC Electrical Characteristics Symbol VIH VIL VOH VOL IOZ Parameter HIGH Level TA VCC Min 2.0 25qC Typ 40qC to 85qC TA Max Min 1.5 Units Max Conditions 1.5 Input 3.0 2.0 2.0 Voltage 3.6 2.4 2.4 V LOW Level 2.0 0.5 Input 3.0 0.8 0.5 0.8 Voltage 3.6 0.8 0.8 HIGH Level 2.0 1.9 2.0 1.9 Output 3.0 2.9 3.0 2.9 Voltage 3.0 2.58 LOW Level 2.0 0.0 Output 3.0 0.0 0.1 0.1 Voltage 3.0 0.36 0.44 3-STATE 3.6 r0.25 r2.5 V VIN VIH or VIL IOH 50 PA IOH 50 PA V 2.48 IOH 0.1 0.1 VIN 50 PA IOL 50 PA IOL 4 mA V PA Output VIN 4 mA VIH or VIL IOL VIH or VIL VOUT VCC or GND Off-State Current IIN Input Leakage Current 3.6 r0.1 r1.0 PA VIN 5.5V or GND ICC Quiescent Supply Current 3.6 4.0 40.0 PA VIN VCC or GND Noise Characteristics Symbol (Note 3) VCC Parameter TA 25qC (V) Typ Limit Units Conditions CL (pF) VOLP Quiet Output Maximum Dynamic VOL 3.3 0.5 0.8 V 50 VOLV Quiet Output Minimum Dynamic VOL 3.3 0.5 0.8 V 50 VIHD Minimum HIGH Level Dynamic Input Voltage 3.3 2.0 V 50 VILD Maximum LOW Level Dynamic Input Voltage 3.3 0.8 V 50 Note 3: Input tr tf 3 ns www.fairchildsemi.com 2 Symbol tPLH VCC Parameter (V) 25qC TA Max Min Max 2.7 6.1 10.7 1.0 13.5 8.6 14.2 1.0 17.0 3.3 r 0.3 4.7 6.8 1.0 8.0 7.2 10.1 1.0 9.0 16.9 11.5 tPHL tPZL 3-STATE Output tPZH Enable Time TA 40qC to 85qC Typ Propagation Delay Time Min Units Conditions CL 15 pF CL 50 pF CL 15 pF 11.5 CL 50 pF 1.0 20.5 CL 15 pF, RL 1 k: 20.4 1.0 24.0 CL 50 pF, RL 1 k: 7.1 11.0 1.0 13.0 CL 15 pF, RL 1 k: 9.6 14.5 1.0 16.5 CL 50 pF, RL 1 k: 2.7 11.5 18.0 1.0 21.0 CL 50 pF, RL 1 k: 3.3 r 0.3 9.6 12.8 1.0 14.5 CL 50 pF, RL 1 k: CL 50 pF (Note 4) 2.7 3.3 r 0.3 tPLZ 3-STATE Output tPHZ Disable Time tOSLH Output to Output Skew 2.7 tOSHL (Note 4) 3.3 Note 4: Parameter guaranteed by design. tOSLH |tPLHm tPLHn|, tOSHL 1.5 1.5 1.5 1.5 ns ns ns ns |t PHLm t PHLn| Capacitance Symbol TA Parameter Min 25qC TA Typ Max 10 40qC to 85qC Min Units Max CIN Input Capacitance T/R, OE 4 CI/O Output Capacitance An, Bn 8 pF CPD Power Dissipation Capacitance (Note 5) 21 pF 10 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 AC Electrical Characteristics 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. LIFE SUPPORT POLICY FAIRCHILD'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 FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 2. A critical component in 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. 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 (c) 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. www.fairchildsemi.com www.fairchildsemi.com 6