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54ACQ244 Dataheets PDF



Part Number 54ACQ244
Manufacturers National Semiconductor
Logo National Semiconductor
Description Quiet Series Octal Buffer/Line Driver
Datasheet 54ACQ244 Datasheet54ACQ244 Datasheet (PDF)

www.DataSheet4U.com 54ACQ244 • 54ACTQ244 Quiet Series Octal Buffer/Line Driver with TRI-STATE Outputs August 1998 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 sw.

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www.DataSheet4U.com 54ACQ244 • 54ACTQ244 Quiet Series Octal Buffer/Line Driver with TRI-STATE Outputs August 1998 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 IEE/IEC Connection Diagrams Pin Assignment for DIP and Flatpak DS100236-1 DS100236-2 Pin Names OE1, OE2 I0–I 7 O0–O 7 Inputs Outputs Description TRI-STATE Output Enable Inputs 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 Truth Tables Inputs OE1 L L H Inputs OE2 L L H H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial Z = High Impedance Outputs In L H X (Pins 12, 14, 16, 18) L H Z Outputs In L H X (Pins 3, 5, 7, 9) L H Z www.national.com 2 Absolute Maximum Ratings (Note 1) 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 −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 Recommended Operating Conditions 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 2.0V to 6.0V 4.5V to 5.5V 0V to VCC 0V to VCC −55˚C to +125˚C 125 mV/ns ± 50 mA ± 50 mA −65˚C to +150˚C ± 300 mA 175˚C 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. 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 Minimum High Level Input Voltage VIL Maximum Low Level Input Voltage VOH Minimum High Level Output Voltage 3.0 4.5 5.5 3.0 4.5 5.5 3.0 4.5 5.5 54ACQ TA = −55˚C to +125˚C Guaranteed Limits 2.1 3.15 3.85 0.9 1.35 1.65 2.9 4.4 5.4 (Note 3) VIN = VIL or VIH 3.0 4.5 5.5 VOL Maximum Low Level Output Voltage 3.0 4.5 5.5 2.4 3.7 4.7 0.1 0.1 0.1 (Note 3) VIN = VIL or VIH 3.0 4.5 5.5 IIN Maximum Input Leakage Current 5.5 0.50 0.50 0.50 V µA IOL = 12 mA IOL = 24 mA IOL = 24 mA VI = VCC, GND (Note 5) V V IOH = −12 mA IOH = −24 mA IOH = −24 mA IOUT = 50 µA V IOUT = −50 µA V VOUT = 0.1V or VCC − 0.1V V VOUT = 0.1V or VCC − 0.1V Units Conditions ± 1.0 3 www.national.com DC Electrical Characteristics for ’ACQ Family Devices Symbol Parameter VCC (V) IOLD IOHD ICC IOZ Minimum Dynamic (Note 4) Output Current Maximum Quiescent Supply Current Maximum TRI-STATE Leakage Current VOLP VOLV Quiet Output Maximum Dynamic VOL 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. (Continued) 54ACQ TA = −.


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