93L24FMQB

93L24 5-Bit Comparator June 1989 93L24 5-Bit Comparator General Description The 93L24 expandable comparator provides comparison between two 5-bit words and gives three outputs ‘‘less than’’ ‘‘greater than’’ and ‘‘equal to’’ A HIGH on the active LOW Enable Input forces all three outputs LOW Features Y Y Y Three separate outputs AkB AlB A e B Easily expandable Active low enable input Connection Diagram Dual-In-Line Package Logic Symbol TL F 10199 – 2 VCC e Pin 16 GND e Pin 8 TL F 10199 – 1 Order Number 93L24DMQB or 93L24FMQB See NS Package Number J16A or W16A Truth Table Pin Names E A0 – A4 B0 – B4 AkB AlB AeB Description Enable Input (Active LOW) Word A Parallel Inputs Word B Parallel Inputs A Less than B Output (Active HIGH) A Greater than B Output (Active HIGH) A Equal to B Output (Active HIGH) E H L L L Inputs An Bn AkB L L L H Outputs AlB L L H L AeB L H L L X X Word A e Word B Word A l Word B Word B k Word A H e HIGH Voltage Level L e LOW Voltage Level X e Immaterial C1995 National Semiconductor Corporation TL F 10199 RRD-B30M105 Printed in U S A Absolute Maximum Ratings (Note) 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 If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications Supply Voltage 7V Input Voltage 5 5V Operating Free Air Temperature Range b 55 C to a 125 C MIL b 65 C to a 150 C Storage Temperature Range Recommended Operating Conditions Symbol VCC VIH VIL IOH IOL TA Parameter Min Supply Voltage High Level Input Voltage Low Level Input Voltage High Level Output Current Low Level Output Current Free Air Operating Temperature b 55 93L24 (MIL) Nom 5 Max 55 Units V V 07 b 400 45 2 V mA mA C 48 125 Electrical Characteristics over recommended operating free air temperature (unless otherwise noted) Symbol VI VOH VOL II IIH IIL IOS ICC Parameter Input Clamp Voltage High Level Output Voltage Low Level Output Voltage Input Current Input Voltage Max Conditions VCC e Min II e b10 mA VCC e Min IOH e Max VIL e Max VIH e Min VCC e Min IOL e Max VIH e Min VIL e Max VCC e Max VI e 5 5V VCC e Max VI e 2 4V VCC e Max VI e 0 3V VCC e Max (Note 2) VCC e Max b2 5 Min Typ (Note 1) Max b1 5 Units V V 24 03 1 40 b0 8 b 25 V mA mA mA mA mA High Level Input Current Low Level Input Current Short Circuit Output Current Supply Current 21 Note 1 All typicals are at VCC e 5V TA e 25 C Note 2 Not more than one output should be shorted at a time and the duration should not exceed one second 2 Switching Characteristics VCC e a 5 0V TA e a 25 C (See Section 1 for test waveforms and output load) Symbol tPLH tPHL tPLH tPHL tPLH tPHL tPLH tPHL Parameter Min Propagation Delay E to A e B E to AkB AlB Propagation Delay An to AlB Bn to AlB Propagation Delay An to AkB Bn to AkB Propagation Delay An or Bn to A e B CL e 15 pF Max 32 35 54 75 70 77 100 102 ns ns ns ns Units Functional Description The 93L24 5-bit comparators use combinational circuitry to directly generate ‘‘A greater than B’’ and ‘‘A less than B’’ outputs As evident from the logic diagram these ouptuts are generated in only three gate delays The ‘‘A equals B’’ output is generated in one additional gate delay by decoding the ‘‘A neither less than nor greater than B’’ condition with a NOR gate All three outputs are activated by the active LOW Enable Input (E) Tying the AlB output from one device into an A input on another device and the Ak B output into the corresponding B input permits easy expansion The A4 and B4 inputs are the most significant inputs and A0 B0 the least significant Thus if A4 is HIGH and B4 is LOW the AlB output will be HIGH regardless of all other inputs except E Logic Diagram TL F 10199 – 3 3 93L24 5-Bit Comparator Physical Dimensions inches (millimeters) 16-Lead Ceramic Dual-In-Line Package (J) Order Number 93L24DMQB NS Package Number J16A 16-Lead Ceramic Flat Package (W) Order Number 93L24FMQB NS Package Number W16A 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