54AC14 Hex Inverter with Schmitt Trigger Input General Description The ’AC14 contains six inverter gates each with a Schmitt trigger input. The ’AC14 contains six logic inverters which accept standard CMOS input signals and provide standard CMOS output levels. They are capable of transforming slowly changing input signals into sharply defined, jitter-free output signals. In addition, they have a greater noise margin than conventional inverters. The ’AC14 has hysteresis between the positive-going and negative-going input thresholds (typically 1.0V) which is de- termined internally by transistor ratios and is essentially insensitive to temperature and supply voltage variations. Features n ICC reduced by 50% n Outputs source/sink 24 mA n Standard Military Drawing (SMD) — ’AC14: 5962-87624 Logic Symbol IEEE/IEC DS100263-1 Function Table Input Output A O L H H L FACT™ is a trademark of Fairchild Semiconductor Corporation. © 1998 National Semiconductor Corporation DS100263 www.national.com 54AC14 Hex Inverter with Schmitt Trigger Input July 1998 Connection Diagrams Pin Assignment for LCC Pin Assignment for DIP and Flatpack DS100263-3 DS100263-2 Pin Names www.national.com Description In Inputs On Outputs 2 Absolute Maximum Ratings (Note 1) Storage Temperature (TSTG) Junction Temperature (TJ) CDIP 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) −65˚C to +150˚C 175˚C Recommended Operating Conditions −0.5V to +7.0V −20 mA +20 mA −0.5V to VCC + 0.5V Supply Voltage (VCC) ’AC Input Voltage (VI) Output Voltage (VO) Operating Temperature (TA) 54AC −20 mA +20 mA −0.5V to VCC + 0.5V 2.0V to 6.0V 0V to VCC 0V to VCC −55˚C to +125˚C 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. ± 50 mA ± 50 mA DC Characteristics for ’AC Family Devices Symbol Parameter VCC 54AC TA = −55˚C to +125˚C Units Conditions (V) Guaranteed Limits VOH Minimum High Level Output Voltage 3.0 2.9 4.5 4.4 5.5 5.4 3.0 2.4 4.5 3.7 5.5 4.7 3.0 0.1 4.5 0.1 5.5 0.1 3.0 0.5 4.5 0.5 IOUT = −50 µA V (Note 2) VIN = VIL or VIH VOL Maximum Low Level Output Voltage −12 mA V IOH −24 mA −24 mA IOUT = 50 µA V (Note 2) VIN = VIL or VIH IIN Maximum Input 5.5 0.5 5.5 ± 1.0 12 mA V IOL 24 mA 24 mA µA VI = VCC, GND Leakage Current Vt+ Vt− Vh(max) Vh(min) Maximum Positive 3.0 2.2 Threshold 4.5 3.2 5.5 3.9 Minimum Negative 3.0 0.5 Threshold 4.5 0.9 5.5 1.1 Maximum Hysteresis Minimum Hysteresis 3.0 1.2 4.5 1.4 5.5 1.6 3.0 0.3 4.5 0.4 5.5 0.5 3 TA = Worst Case V TA = Worst Case V TA = Worst Case V TA = Worst Case V www.national.com DC Characteristics for ’AC Family Devices Symbol Parameter VCC (Continued) 54AC TA = −55˚C to +125˚C Units Conditions (V) Guaranteed Limits IOLD 5.5 50 mA IOHD (Note 3) Minimum Dynamic Output Current 5.5 −50 mA ICC Maximum Quiescent 5.5 40.0 µA Supply Current VOLD = 1.65V Max VOHD = 3.85V Min VIN = VCC 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. ICC for 54AC @ 25˚C is identical to 74AC @ 25˚C. AC Electrical Characteristics 54AC TA = −55˚C VCC Symbol Parameter (V) (Note 5) tPLH tPHL Propagation Delay Propagation Delay Fig. to +125˚C CL = 50 pF Units Min Max 3.3 1.0 16.0 5.0 1.0 12.0 3.3 1.0 14.0 5.0 1.5 10.0 Conditions VCC = OPEN VCC = 5.0V Note 5: Voltage Range 3.3 is 3.3V ± 0.3V Voltage Range 5.0 is 5.0V ± 0.5V Capacitance Symbol CIN CPD Typ Units Input Capacitance Parameter 4.5 pF Power Dissipation 25.0 pF Capacitance www.national.com 4 ns ns No. 5 Physical Dimensions inches (millimeters) unless otherwise noted 20 Terminal Ceramic Leadless Chip Carrier (L) NS Package Number E20A www.national.com 6 Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 14-Lead Ceramic Dual-In-Line Package (D) NS Package Number J14A 14-Lead Ceramic Flatpak (F) NS Package Number W14B 7 www.national.com 54AC14 Hex Inverter with Schmitt Trigger Input 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. Life support devices or systems are devices or sysdevice or system whose failure to perform can be reatems which, (a) are intended for surgical implant into sonably expected to cause the failure of the life support the body, or (b) support or sustain life, and whose faildevice or system, or to affect its safety or effectiveness. ure 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. 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