54LS14/DM74LS14 Hex Inverters with Schmitt Trigger Inputs General Description This device contains six independent gates each of which performs the logic INVERT function. Each input has hysteresis which increases the noise immunity and transforms a slowly changing input signal to a fast changing, jitter free output. Connection Diagram Dual-In-Line Package TL/F/6353 – 1 Order Number 54LS14DMQB, 54LS14FMQB, 54LS14LMQB, DM74LS14M or DM74LS14N See NS Package Number E20A, J14A, M14A, N14A or W14B Function Table YeA Input Output A Y L H H L H e High Logic Level L e Low Logic Level C1995 National Semiconductor Corporation TL/F/6353 RRD-B30M105/Printed in U. S. A. 54LS14/DM74LS14 Hex Inverters with Schmitt Trigger Inputs June 1989 Absolute Maximum Ratings (Note) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/Distributors for availability and specifications. Note: 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’’ table are not guaranteed at the absolute maximum ratings. The ‘‘Recommended Operating Conditions’’ table will define the conditions for actual device operation. Supply Voltage 7V Input Voltage 7V Operating Free Air Temperature Range b 55§ C to a 125§ C 54LS DM74LS 0§ C to a 70§ C Storage Temperature Range b 65§ C to a 150§ C Recommended Operating Conditions Symbol 54LS14 Parameter DM74LS14 Units Min Nom Max Min Nom Max VCC Supply Voltage 4.5 5 5.5 4.75 5 5.25 V VT a Positive-Going Input Threshold Voltage (Note 1) 1.5 1.6 2.0 1.4 1.6 1.9 V VTb Negative-Going Input Threshold Voltage (Note 1) 0.6 0.8 1.1 0.5 0.8 1 V HYS Input Hysteresis (Note 1) 0.4 0.8 0.4 0.8 IOH High Level Output Current b 0.4 mA IOL Low Level Output Current 8 mA TA Free Air Operating Temperature 70 §C b 0.4 4 b 55 125 0 V Electrical Characteristics over recommended operating free air temperature range (unless otherwise noted) Symbol Parameter Conditions Min Typ (Note 2) Max Units b 1.5 V VI Input Clamp Voltage VCC e Min, II e b18 mA VOH High Level Output Voltage VCC e Min, IOH e Max VIL e Max Low Level Output Voltage VCC e Min, IOL e Max VIH e Min 54LS DM74 0.35 0.5 VCC e Min, IOL e 4 mA DM74 0.25 0.4 VOL 54LS 2.5 3.4 DM74 2.7 3.4 IT a Input Current at Positive-Going Threshold VCC e 5V, VI e VT a DM74 IT b Input Current at Negative-Going Threshold VCC e 5V, VI e VTb DM74 II Input Current @ Max Input Voltage VCC e Max, VI e 7V DM74 VCC e Max, VI e 10.0V 54LS 0.25 V 0.4 V b 0.14 mA b 0.18 mA 0.1 mA IIH High Level Input Current VCC e Max, VI e 2.7V 20 mA IIL Low Level Input Current VCC e Max, VI e 0.4V b 0.4 mA IOS Short Circuit Output Current VCC e Max (Note 3) ICCH Supply Current with Outputs High VCC e Max 8.6 16 mA ICCL Supply Current with Outputs Low VCC e Max 12 21 mA 54LS b 20 b 100 DM74 b 20 b 100 Note 1: VCC e 5V. Note 2: All typicals are at VCC e 5V, TA e 25§ C. Note 3: Not more than one output should be shorted at a time, and the duration should not exceed one second. 2 mA Switching Characteristics at VCC e 5V and TA e 25§ C (See Section 1 for Test Waveforms and Output Load) RL e 2 kX Symbol CL e 15 pF Parameter CL e 50 pF Units Min Max Min Max tPLH Propagation Delay Time Low to High Level Output 5 22 8 25 ns tPHL Propagation Delay Time High to Low Level Output 5 22 10 33 ns 3 Physical Dimensions inches (millimeters) Ceramic Leadless Chip Carrier (E) Order Number 54LS14LMQB NS Package Number E20A 14-Lead Ceramic Dual-In-Line Package (J) Order Number 54LS14DMQB NS Package Number J14A 4 Physical Dimensions inches (millimeters) (Continued) 14-Lead Small Outline Molded Package (M) Order Number DM74LS14M NS Package Number M14A 14-Lead Molded Dual-In-Line Package (N) Order Number DM74LS14N NS Package Number N14A 5 54LS14/DM74LS14 Hex Inverters with Schmitt Trigger Inputs Physical Dimensions inches (millimeters) (Continued) 14-Lead Ceramic Flat Package (W) Order Number 54LS14FMQB NS Package Number W14B 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. 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