Revised March 1999 74LVX244 Low Voltage Octal Buffer/Line Driver with 3-STATE Outputs General Description Features The LVX244 is an octal non-inverting buffer and line driver designed to be employed as a memory address driver, clock driver and bus oriented transmitter or receiver which provides improved PC board density. The inputs tolerate up to 7V allowing interface of 5V systems to 3V systems. ■ Input voltage translation from 5V to 3V ■ Ideal for low power/low noise 3.3V applications ■ Guaranteed simultaneous switching noise level and dynamic threshold performance Ordering Code: Order Number Package Number 74LVX244M 74LVX244SJ 74LVX244MTC M20B M20D MTC20 Package Description 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300” Wide 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 suffix letter “X” to the ordering code. Pin Descriptions Logic Symbol IEEE/IEC Pin Names Description OE1, OE2 3-STATE Output Enable Inputs I0–I7 Inputs O0–O7 Outputs Truth Tables Inputs Connection Diagram Outputs OE1 In (Pins 12, 14, 16, 18) L L L L H H H X Z Inputs OE2 DS011552.prf In (Pins 3, 5, 7, 9) L L L L H H H X H = HIGH Voltage Level X = Immaterial © 1999 Fairchild Semiconductor Corporation Outputs Z L = LOW Voltage Level Z = High Impedance www.fairchildsemi.com 74LVX244 Low Voltage Octal Buffer/Line Driver with 3-STATE Outputs February 1993 74LVX244 Absolute Maximum Ratings(Note 1) Recommended Operating Conditions (Note 2) −0.5V to +7.0V Supply Voltage (VCC) DC Input Diode Current (IIK) Supply Voltage (VCC) VI = −0.5V −20 mA −0.5V to 7V DC Input Voltage (VI) 2.0V to 3.6V Input Voltage (VI) 0V to 5.5V Output Voltage (Vo) DC Output Diode Current (IOK) 0V to VCC −40°C to +85°C Operating Temperature (TA) VO = −0.5V −20 mA VO = VCC + 0.5V +20 mA Input Rise and Fall Time (∆t/∆V) −0.5V to VCC + 0.5V DC Output Voltage (VO) 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. DC Output Source ±25 mA or Sink Current (IO) DC VCC or Ground Current ±75 mA (ICC or IGND) 0 ns/V to 100 ns/V Note 2: Unused inputs must be held HIGH or LOW. They may not float. −65°C to +150°C Storage Temperature (TSTG) Power Dissipation 180 mW DC Electrical Characteristics Symbol VIH VIL VOH VOL IOZ Parameter TA = +25°C VCC Min TA = −40°C to +85°C Typ Max Min HIGH Level Input 2.0 1.5 1.5 Voltage 3.0 2.0 2.0 3.6 2.4 2.4 2.0 0.5 0.5 Voltage 3.0 0.8 0.8 3.6 0.8 0.8 2.0 1.9 2.0 1.9 Voltage 3.0 2.9 3.0 2.9 3.0 2.58 V VIN = VIH or VIL IOH = −50 µA IOH = −50 µA V IOH = −4 mA 2.48 LOW Level Output 2.0 0.0 Voltage 3.0 0.0 3-STATE Output Conditions V LOW Level Input HIGH Level Output Units Max 0.1 VIN = VIH or VIL IOL = 50 µA 0.1 IOL = 50 µA 0.1 0.1 3.0 0.36 0.44 V 3.6 ±0.25 ±2.5 µA VIN = VIH or VIL IOL = 4 mA VOUT = VCC or GND Off-State Current IIN Input Leakage Current 3.6 ±0.1 ±1.0 µA VIN = 5.5V or GND ICC Quiescent Supply Current 3.6 4.0 40.0 µA VIN = VCC or GND Noise Characteristics Symbol (Note 3) VCC (V) Parameter TA = 25°C Typ Units Limit 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 74LVX244 AC Electrical Characteristics Symbol Parameter tPLH Propagation Delay tPHL Time tPZL 3-STATE Output tPZH Enable Time VCC (V) 2.7 TA = +25°C Min TA = −40°C to +85°C Typ Max Min Max 6.1 11.4 1.0 13.5 Units Conditions CL = 15 pF CL = 50 pF 8.6 14.9 1.0 17.0 3.3 ± 0.3 4.7 7.1 1.0 8.5 7.2 10.6 1.0 12.0 CL = 50 pF 2.7 7.1 13.8 1.0 16.5 CL = 15 pF, 9.6 17.3 1.0 20.0 CL = 50 pF, 5.5 8.8 1.0 10.5 8.0 12.3 1.0 14.0 2.7 11.6 16.0 1.0 19.0 3.3 ± 0.3 9.7 11.4 1.0 13.0 ns CL = 15 pF RL = 1 kΩ 3.3 ± 0.3 RL = 1 kΩ ns CL = 15 pF, RL = 1 kΩ CL = 50 pF, RL = 1 kΩ tPLZ 3-STATE Output tPHZ Disable Time tOSLH Output to Output 2.7 1.5 1.5 tOSHL Skew (Note 4) 3.3 1.5 1.5 CL = 50 pF, ns RL = 1 kΩ CL = 50 pF ns Note 4: Parameter guaranteed by design. tOSLH = |tPLHm − tPLHn|, tOSHL = |t PHLm − t PHLn| Capacitance Symbol TA = +25°C Parameter Min TA =−40°C to +85°C Typ Max 10 Min Units Max CIN Input Capacitance 4 COUT Output Capacitance 6 10 pF pF CPD Power Dissipation Capacitance (Note 5) 19 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 74LVX244 Physical Dimensions inches (millimeters) unless otherwise noted 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300” Wide Package Number M20B 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide Package Number M20D www.fairchildsemi.com 4 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide Package Number MTC20 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 1. Life support devices or systems are devices or systems device or system whose failure to perform can be reawhich, (a) are intended for surgical implant into the sonably expected to cause the failure of the life support body, or (b) support or sustain life, and (c) whose failure device or system, or to affect its safety or effectiveness. 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 www.fairchildsemi.com user. 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. 74LVX244 Low Voltage Octal Buffer/Line Driver with 3-STATE Outputs Physical Dimensions inches (millimeters) unless otherwise noted (Continued)