74LS14

54LS14 DM74LS14 Hex Inverters with Schmitt Trigger Inputs June 1989 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 A L H H e High Logic Level L e Low Logic Level Output Y H L C1995 National Semiconductor Corporation TL F 6353 RRD-B30M105 Printed in U S A Absolute Maximum Ratings (Note) If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications 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 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 Recommended Operating Conditions Symbol VCC VT a VTb HYS IOH IOL TA Parameter Min Supply Voltage Positive-Going Input Threshold Voltage (Note 1) Negative-Going Input Threshold Voltage (Note 1) Input Hysteresis (Note 1) High Level Output Current Low Level Output Current Free Air Operating Temperature b 55 54LS14 Nom 5 16 08 08 b0 4 DM74LS14 Max 55 20 11 Min 4 75 14 05 04 Nom 5 16 08 08 b0 4 Units Max 5 25 19 1 V V V V mA mA C 45 15 06 04 4 125 0 8 70 Electrical Characteristics over recommended operating free air temperature range (unless otherwise noted) Symbol VI VOH Parameter Input Clamp Voltage High Level Output Voltage Low Level Output Voltage Conditions VCC e Min II e b18 mA VCC e Min IOH e Max VIL e Max VCC e Min IOL e Max VIH e Min VCC e Min IOL e 4 mA IT a IT b II Input Current at Positive-Going Threshold Input Current at Negative-Going Threshold Input Current Input Voltage Max VCC e 5V VI e VT a VCC e 5V VI e VTb VCC e Max VI e 7V VCC e Max VI e 10 0V VCC e Max VI e 2 7V VCC e Max VI e 0 4V VCC e Max (Note 3) VCC e Max VCC e Max 54LS DM74 b 20 b 20 Min Typ (Note 2) Max b1 5 Units V V 54LS DM74 54LS DM74 DM74 DM74 DM74 DM74 54LS 25 27 34 34 0 25 0 35 0 25 b 0 14 b 0 18 VOL 04 05 04 mA mA 01 20 b0 4 b 100 b 100 V mA mA mA mA IIH IIL IOS High Level Input Current Low Level Input Current Short Circuit Output Current Supply Current with Outputs High Supply Current with Outputs Low ICCH ICCL 86 12 16 21 mA mA 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 Switching Characteristics at VCC e 5V and TA e 25 C (See Section 1 for Test Waveforms and Output Load) RL e 2 k X Symbol Parameter Min tPLH tPHL Propagation Delay Time Low to High Level Output Propagation Delay Time High to Low Level Output 5 5 CL e 15 pF Max 22 22 CL e 50 pF Min 8 10 Max 25 33 ns ns Units 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 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 Corporation 1111 West Bardin Road Arlington TX 76017 Tel 1(800) 272-9959 Fax 1(800) 737-7018 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 Europe Fax (a49) 0-180-530 85 86 Email cnjwge tevm2 nsc com Deutsch Tel (a49) 0-180-530 85 85 English Tel (a49) 0-180-532 78 32 Fran ais Tel (a49) 0-180-532 93 58 Italiano Tel (a49) 0-180-534 16 80 National Semiconductor Hong Kong Ltd 13th Floor Straight Block Ocean Centre 5 Canton Rd Tsimshatsui Kowloon Hong Kong Tel (852) 2737-1600 Fax (852) 2736-9960 National Semiconductor Japan Ltd Tel 81-043-299-2309 Fax 81-043-299-2408 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