54AC244/54ACT244 Octal Buffer/Line Driver with TRI-STATE (R) Outputs General Description The 'AC/'ACT244 is an octal buffer and line driver designed to be employed as a memory address driver, clock driver and bus-oriented transmitter/receiver which provides improved PC board density. Features n Outputs source/sink 24 mA n 'ACT244 has TTL-compatible inputs n Standard Microcircuit Drawing (SMD) -- 'AC244: 5962-87552 -- 'ACT244: 5962-87760 n 54AC244 now qualified to 300Krad RHA designation, refer to the SMD for more information n ICC and IOZ reduced by 50% n TRI-STATE outputs drive bus lines or buffer memory address registers Logic Symbol Pin Names IEEE/IEC Description OE1, OE2 TRI-STATE Output Enable Inputs I0-I7 Inputs O0-O7 Outputs 10028201 TRI-STATE (R) is a registered trademark of National Semiconductor Corporation. FACT (R) is a registered trademark of Fairchild Semiconductor Corporation. (c) 2003 National Semiconductor Corporation DS100282 www.national.com 54AC244/54ACT244 Octal Buffer/Line Driver with TRI-STATE Outputs July 2003 54AC244 * 54ACT244 Connection Diagrams Truth Tables Pin Assignment for DIP and Flatpak Inputs Outputs OE1 In (Pins 12, 14, 16, 18) L L L L H H H X Z H = HIGH Voltage Level L = LOW Voltage Level Inputs OE2 10028202 10028203 2 Outputs (Pins 3, 5, 7, 9) L L L L H H H X Z X = Immaterial Z = High Impedance Pin Assignment for LCC www.national.com In 'ACT (Note 1) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage (VCC) 4.5V to 5.5V Input Voltage (VI) 0V to VCC Output Voltage (VO) 0V to VCC Operating Temperature (TA) -0.5V to +7.0V 54AC/ACT DC Input Diode Current (IIK) -55C to +125C Minimum Input Edge Rate (V/t) VI = -0.5V -20 mA 'AC Devices VI = VCC + 0.5V +20 mA VIN from 30% to 70% of VCC DC Input Voltage (VI) -0.5V to VCC + 0.5V VCC @ 3.3V, 4.5V, 5.5V DC Output Diode Current (IOK) VO = -0.5V -20 mA 'ACT Devices VO = VCC + 0.5V +20 mA VIN from 0.8V to 2.0V DC Output Voltage (VO) -0.5V to VCC + 0.5V VCC @ 4.5V, 5.5V DC Output Source DC VCC or Ground Current 50 mA per Output Pin (ICC or IGND) 125 mV/ns Note 1: Absolute maximum ratings are those values beyond which damage to the device may occur. The databook specifications should be met, without exception, to ensure that the system design is reliable over its power supply, temperature, and output/input loading variables. National does not recommend operation of FACT (R) circuits outside databook specifications. 50 mA or Sink Current (IO) Storage Temperature (TSTG) 125 mV/ns Minimum Input Edge Rate (V/t) -65C to +150C Junction Temperature (TJ) CDIP 175C Recommended Operating Conditions Supply Voltage (VCC) 'AC 2.0V to 6.0V DC Characteristics for 'AC Family Devices 54AC Symbol Parameter VCC TA = (V) -55C to +125C Units Conditions Guaranteed Limits VIH VIL VOH Minimum High 3.0 2.1 Level Input 4.5 3.15 Voltage 5.5 3.85 Maximum Low 3.0 0.9 Level Input 4.5 1.35 Voltage 5.5 1.65 Minimum High 3.0 2.9 Level Output 4.5 4.4 Voltage 5.5 5.4 VOUT = 0.1V V or VCC - 0.1V V or VCC - 0.1V VOUT = 0.1V IOUT = -50 A V (Note 2) VIN = VIL or VIH 3.0 2.4 4.5 3.7 5.5 4.7 3 -12 mA V IOH -24 mA -24 mA www.national.com 54AC244 * 54ACT244 Absolute Maximum Ratings 54AC244 * 54ACT244 DC Characteristics for 'AC Family Devices (Continued) 54AC Symbol Parameter VCC (V) TA = Units Conditions -55C to +125C Guaranteed Limits VOL Maximum Low 3.0 0.1 Level Output 4.5 0.1 Voltage 5.5 0.1 IOUT = 50 A V (Note 2) VIN = VIL or VIH 3.0 IIN Maximum Input 0.50 12 mA 4.5 0.50 5.5 0.50 V IOL 5.5 1.0 A 5.5 5.0 A 5.5 50 mA VOLD = 1.65V Max 5.5 -50 mA VOHD = 3.85V Min 5.5 80.0 A VIN = VCC 24 mA 24 mA VI = VCC, GND Leakage Current IOZ Maximum TRI-STATE VI (OE) = VIL, VIH Current IOLD VO = VCC, GND (Note 3) Minimum Dynamic Output Current IOHD Maximum Quiescent ICC VI = VCC, VGND Supply Current or GND Note 2: All outputs loaded; thresholds on input associated with output under test. Note 3: Maximum test duration 2.0 ms, one output loaded at a time. Note 4: IIN and ICC @ 3.0V are guaranteed to be less than or equal to the respective limit @ 5.5V VCC. Note 5: ICC for 54AC @ 25C is identical to 74AC @ 25C. DC Characteristics for 'ACT Family Devices 54ACT Symbol Parameter VCC TA = (V) -55C to +125C Units Conditions Guaranteed Limits VIH VIL VOH Minimum High Level 4.5 2.0 Input Voltage 5.5 2.0 Maximum Low Level 4.5 0.8 Input Voltage 5.5 0.8 Minimum High Level 4.5 4.4 Output Voltage 5.5 5.4 V VOUT = 0.1V V VOUT = 0.1V or VCC - 0.1V or VCC - 0.1V V IOUT = -50 A (Note 6) VIN = VIL or VIH VOL 4.5 3.70 5.5 4.70 Maximum Low Level 4.5 0.1 Output Voltage 5.5 0.1 V IOH V IOUT = 50 A -24 mA -24 mA (Note 6) VIN = VIL or VIH 4.5 0.50 5.5 0.50 1.0 5.0 IIN Maximum Input Leakage Current 5.5 IOZ Maximum TRI-STATE 5.5 www.national.com 4 V IOL 24 mA 24 mA A VI = VCC, GND A VI = VIL, VIH (Continued) 54ACT Symbol Parameter VCC TA = (V) Units Conditions -55C to +125C Guaranteed Limits Current VO = VCC, GND ICCT Maximum ICC/Input 5.5 1.6 mA VI = VCC - 2.1V IOLD (Note 7) Minimum Dynamic Output Current 5.5 50 mA VOLD = 1.65V Max 5.5 -50 mA VOHD = 3.85V Min 5.5 80.0 A VIN = VCC IOHD ICC Maximum Quiescent Supply Current or GND Note 6: All outputs loaded; thresholds on input associated with output under test. Note 7: Maximum test duration 2.0 ms, one output loaded at a time. Note 8: ICC for 54ACT @ 25C is identical to 74ACT @ 25C. 5 www.national.com 54AC244 * 54ACT244 DC Characteristics for 'ACT Family Devices 54AC244 * 54ACT244 AC Electrical Characteristics 54AC Symbol Parameter tPLH tPHL tPZH tPZL VCC TA = -55C (V) to +125C (Note 9) CL = 50 pF Fig. Units Min Max Propagation Delay 3.3 1.0 12.5 Data to Output 5.0 1.0 9.5 Propagation Delay 3.3 1.0 12.0 Data to Output 5.0 1.0 9.0 Output Enable Time 3.3 1.0 11.5 5.0 1.0 9.0 3.3 1.0 13.0 5.0 1.0 10.5 1.0 12.5 Output Enable Time tPHZ Output Disable Time 3.3 5.0 1.0 10.5 tPLZ Output Disable Time 3.3 1.0 13.0 5.0 1.0 11.0 No. ns ns ns ns ns ns Note 9: Voltage Range 3.3 is 3.3V 0.3V Voltage Range 5.0 is 5.0V 0.5V AC Electrical Characteristics 54ACT Symbol Parameter VCC TA = -55C (V) to +125C (Note 10) tPLH Propagation Delay Fig. Units CL = 50 pF Min Max 5.0 1.0 10.0 ns 5.0 1.0 10.0 ns Data to Output tPHL Propagation Delay Data to Output tPZH Output Enable Time 5.0 1.0 9.5 ns tPZL Output Enable Time 5.0 1.0 11.0 ns tPHZ Output Disable Time 5.0 1.0 11.0 ns tPLZ Output Disable Time 5.0 1.0 11.5 ns Note 10: Voltage Range 5.0 is 5.0V 0.5V Capacitance Symbol Parameter Units Conditions CIN Input Capacitance 4.5 pF VCC = OPEN CPD Power Dissipation 45.0 pF VCC = 5.0V Capacitance www.national.com Typ 6 No. 54AC244 * 54ACT244 Physical Dimensions inches (millimeters) unless otherwise noted 20-Terminal Ceramic Leadless Chip Carrier (L) NS Package Number E20A 20-Lead Ceramic Dual-In-Line Package (D) NS Package Number J20A 7 www.national.com 54AC244/54ACT244 Octal Buffer/Line Driver with TRI-STATE Outputs Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 20-Lead Ceramic Flatpak (F) NS Package Number W20A 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 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. National Semiconductor Americas Customer Support Center Email: new.feedback@nsc.com Tel: 1-800-272-9959 www.national.com 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 Francais Tel: +33 (0) 1 41 91 8790 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. 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 National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.