54ACQ244 • 54ACTQ244 Quiet Series Octal Buffer/Line Driver with TRI-STATE ® Outputs General Description The ’ACQ/’ACTQ244 is an octal 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 ACQ/ACTQ utilizes NSC Quiet Series technology to guarantee quiet output switching and improved dynamic threshold performance. FACT Quiet Series™ features GTO™ output control and undershoot corrector in addition to a split ground bus for superior performance. n Guaranteed simultaneous switching noise level and dynamic threshold performance n Improved latch-up immunity n TRI-STATE outputs drive bus lines or buffer memory address registers n Outputs source/sink 24 mA n Faster prop delays than the standard ’AC/’ACT244 n 4 kV minimum ESD immunity n Standard Microcircuit Drawing (SMD) — ’ACTQ244: 5962-92186 — ’ACQ244: 5962-92176 Features n ICC and IOZ reduced by 50% Logic Symbol Connection Diagrams IEE/IEC Pin Assignment for DIP and Flatpak DS100236-2 DS100236-1 Pin Names Description OE1, OE2 TRI-STATE Output Enable Inputs I0–I 7 Inputs O0–O 7 Outputs Pin Assignment for LCC DS100236-3 GTO™ is a trademark of National Semiconductor Corporation. TRI-STATE ® is a registered trademark of National Semiconductor Corporation. FACT ® is a registered trademark of Fairchild Semiconductor Corporation. FACT Quiet Series™ is a trademark of Fairchild Semiconductor Corporation. © 1998 National Semiconductor Corporation DS100236 www.national.com 54ACQ244 • 54ACTQ244 Quiet Series Octal Buffer/Line Driver with TRI-STATE Outputs August 1998 Truth Tables Inputs OE1 Outputs In (Pins 12, 14, 16, 18) L L L L H H H X Z Inputs Outputs OE2 In L L L L H H H X Z (Pins 3, 5, 7, 9) H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial Z = High Impedance www.national.com 2 Absolute Maximum Ratings (Note 1) Recommended Operating Conditions If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage (VCC) DC Input Diode Current (IIK) VI = −0.5V VI = VCC + 0.5V DC Input Voltage (VI) DC Output Diode Current (IOK) VO = −0.5V VO = VCC + 0.5V DC Output Voltage (VO) DC Output Source or Sink Current (IO) DC VCC or Ground Current per Output Pin (ICC or IGND) Storage Temperature (TSTG) DC Latch-Up Source or Sink Current Junction Temperature (TJ) CDIP Supply Voltage (VCC) ’ACQ ’ACTQ Input Voltage (VI) Output Voltage (VO) Operating Temperature (TA) 54ACQ/ACTQ Minimum Input Edge Rate ∆V/∆t ’ACQ Devices VIN from 30% to 70% of VCC VCC @ 3.0V, 4.5V, 5.5V Minimum Input Edge Rate ∆V/∆t ’ACTQ Devices VIN from 0.8V to 2.0V VCC @ 4.5V, 5.5V −0.5V to +7.0V −20 mA +20 mA −0.5V to VCC + 0.5V −20 mA +20 mA −0.5V to VCC + 0.5V ± 50 mA ± 50 mA −65˚C to +150˚C 2.0V to 6.0V 4.5V to 5.5V 0V to VCC 0V to VCC −55˚C to +125˚C 125 mV/ns 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 ® circuits outside databook specifications. ± 300 mA 175˚C Note 2: All commercial packaging is not recommended for applications requiring greater than 2000 temperature cycles from −40˚C to +125˚C. DC Electrical Characteristics for ’ACQ Family Devices Symbol Parameter VCC (V) VIH VIL VOH 54ACQ TA = −55˚C to +125˚C Units Conditions Guaranteed Limits Minimum High Level 3.0 2.1 Input Voltage 4.5 3.15 5.5 3.85 Maximum Low Level 3.0 0.9 Input Voltage 4.5 1.35 5.5 1.65 Minimum High Level 3.0 2.9 Output Voltage 4.5 4.4 5.5 5.4 VOUT = 0.1V V or VCC − 0.1V V or VCC − 0.1V VOUT = 0.1V IOUT = −50 µA V (Note 3) VIN = VIL or VIH VOL 3.0 2.4 4.5 3.7 5.5 4.7 Maximum Low Level 3.0 0.1 Output Voltage 4.5 0.1 5.5 0.1 IOH = −12 mA V IOH = −24 mA IOH = −24 mA IOUT = 50 µA V (Note 3) VIN = VIL or VIH IIN Maximum Input 3.0 0.50 4.5 0.50 5.5 0.50 5.5 ± 1.0 Leakage Current IOL = 12 mA V IOL = 24 mA µA IOL = 24 mA VI = VCC, GND (Note 5) 3 www.national.com DC Electrical Characteristics for ’ACQ Family Devices Symbol 54ACQ TA = −55˚C to +125˚C Parameter VCC (V) Guaranteed Limits IOLD Minimum Dynamic (Note 4) 5.5 IOHD Output Current ICC Maximum Quiescent (Continued) Units Conditions 50 mA VOLD = 1.65V Max 5.5 −50 mA 5.5 80.0 µA VOHD = 3.85V Min VIN = VCC or GND (Note 5) VI(OE) = VIL, VIH VI = VCC, GND Supply Current IOZ Maximum TRI-STATE Leakage Current 5.5 ± 5.0 µA Quiet Output 5.0 1.5 V (Notes 6, 7) 5.0 −1.2 V (Notes 6, 7) VO = VCC, GND VOLP Maximum Dynamic VOL VOLV Quiet Output Minimum Dynamic VOL Note 3: All outputs loaded thresholds on input associated with output under test. Note 4: Maximum test duration 2.0 ms, one output loaded at a time. Note 5: IIN and ICC @ 3.0V are guaranteed to be less than or equal to the respective limit @ 5.5V VCC. ICC for 54ACQ @ 25˚C is identical to 74ACQ @ 25˚C. Note 6: Plastic DIP package. Note 7: Max number of outputs defined as (n). Data Inputs are driven 0V to 5V. One output @ GND. Note 8: Max number of Data Inputs (n) switching. (n − 1) Inputs switching 0V to 5V (’ACQ). Input-under-test switching: 5V to threshold (VILD), 0V to threshold (VIHD), f = 1 MHz. DC Electrical Characteristics for ’ACTQ Family Devices 54ACTQ Symbol VIH VIL VOH Parameter VCC −55˚C to +125˚C (V) Guaranteed Limits 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 Units Conditions V VOUT = 0.1V V or VCC − 0.1V VOUT = 0.1V V or VCC − 0.1V IOUT = −50 µA (Note 9) 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 = −24 mA V IOH = −24 mA IOUT = 50 µA (Note 9) VIN = VIL or VIH IIN Maximum Input 4.5 0.50 5.5 0.50 V IOL = 24 mA ± 1.0 µA IOL = 24 mA VI = VCC, GND 5.5 5.5 ± 5.0 µA VI = VIL, VIH VO = VCC, GND 5.5 1.6 mA VI = VCC − 2.1V Leakage Current IOZ Maximum TRI-STATE Leakage Current ICCT www.national.com Maximum ICC/Input 4 DC Electrical Characteristics for ’ACTQ Family Devices (Continued) 54ACTQ Symbol Parameter VCC −55˚C to +125˚C (V) Guaranteed Limits 5.5 Units Conditions 50 mA VOLD = 1.65V Max IOLD Minimum Dynamic (Note 10) IOHD Output Current 5.5 −50 mA ICC Maximum Quiescent 5.5 80.0 µA VOHD = 3.85V Min VIN = VCC 5.0 1.5 V (Notes 12, 13) 5.0 −1.2 V (Notes 12, 13) Supply Current VOLP Quiet Output or GND (Note 11) Maximum Dynamic VOL VOLV Quiet Output Minimum Dynamic VOL Note 9: All outputs loaded thresholds on input associated with output under test. Note 10: Maximum test duration 2.0 ms, one output loaded at a time. Note 11: ICC for 54ACTQ @ 25˚C is identical to 74ACTQ @ 25˚C. Note 12: Plastic DIP package. Note 13: Max number of outputs defined as (n). Data Inputs are driven 0V to 3V. One output @ GND. AC Electrical Characteristics 54ACQ TA = −55˚C VCC Symbol Parameter (V) (Note 14) tPHL, tPLH tPZL, tPZH tPHZ, tPLZ Fig. to +125˚C CL = 50 pF Units Min Max Propagation Delay 3.3 1.0 12.5 Data to Output 5.0 1.0 9.0 Output Enable Time 3.3 1.0 12.0 5.0 1.0 10.0 3.3 1.0 11.5 5.0 1.0 10.0 Output Disable Time No. ns ns ns Note 14: Voltage Range 5.0 is 5.0V ± 0.5V. Voltage Range 3.3 is 3.3V ± 0.3V. Note 15: Skew is defined as the absolute value of the difference between the actual propagation delay for any two separate outputs of the same device. The specification applies to any outputs switching in the same direction, either HIGH to LOW (tOSHL) or LOW to HIGH (tOSLH). Parameter guaranteed by design. AC Electrical Characteristics 54ACTQ TA = −55˚C VCC Symbol Parameter (V) (Note 16) tPHL, tPLH Propagation Delay Fig. to +125˚C CL = 50 pF Units Min Max 5.0 1.5 9.0 ns No. Data to Output tPZL, tPZH Output Enable Time 5.0 1.5 10.5 ns tPHZ, tPLZ Output Disable Time 5.0 1.5 10.5 ns Note 16: Voltage Range 5.0 is 5.0V ± 0.5V. Note 17: Skew is defined as the absolute value of the difference between the actual propagation delay for any two separate outputs of the same device. The specification applies to any outputs switching in the same direction, either HIGH to LOW (tOSHL) or LOW to HIGH (tOSLH). Parameter guaranteed by design. 5 www.national.com Capacitance Symbol CIN CPD Typ Units Input Capacitance Parameter 4.5 pF Power Dissipation 70 pF Capacitance www.national.com 6 Conditions VCC = OPEN VCC = 5.0V 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 54ACQ244 • 54ACTQ244 Quiet Series 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 OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 2. A critical component in any component of a life support 1. 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