74F521PC

54F 74F521 8-Bit Identity Comparator May 1995 54F 74F521 8-Bit Identity Comparator General Description The ’F521 is an expandable 8-bit comparator It compares two words of up to eight bits each and provides a LOW output when the two words match bit for bit The expansion input IA e B also serves as an active LOW enable input Features Y Y Y Compares two 8-bit words in 6 5 ns typ Expandable to any word length 20-pin package Commercial 74F521PC Military Package Number N20A Package Description 20-Lead (0 300 Wide) Molded Dual-In-Line 20-Lead Ceramic Dual-In-Line 20-Lead (0 300 Wide) Molded Small Outline JEDEC 20-Lead (0 300 Wide) Molded Small Outline EIAJ 20-Lead Molded Shrink Small Outline EIAJ type II 54F521DM (Note 2) 74F521SC (Note 1) 74F521SJ (Note 1) 74F521MSA (Note 1) J20A M20B M20D MSA20 Note 1 Devices also available in 13 reel Use suffix e SCX SJX and MSAX Note 2 Military grade device with environmental and burn-in processing Use suffix e DMQB Logic Symbols IEEE IEC TL F 9545 – 1 TL F 9545 – 4 TRI-STATE is a registered trademark of National Semiconductor Corporation C1995 National Semiconductor Corporation TL F 9545 RRD-B30M75 Printed in U S A Unit Loading Fan Out 54F 74F Pin Names Description UL HIGH LOW 10 10 10 10 10 10 50 33 3 Input IIH IIL Output IOH IOL 20 mA b0 6 mA 20 mA b0 6 mA 20 mA b0 6 mA b 1 mA 20 mA A 0 – A7 B 0 – B7 IA e B OA e B Word A Inputs Word B Inputs Expansion or Enable Input (Active LOW) Identity Output (Active LOW) Truth Table Inputs IA e B L L H H AB AeB AiB AeB AiB Output OA e B L H H H H e HIGH Voltage Level L e LOW Voltage Level A0 e B0 A1 e B1 A2 e B2 etc Connection Diagrams Pin Assignment for DIP SOIC SSOP and Flatpak Logic Diagram TL F 9545–2 Pin Assignment for LCC TL F 9545 – 5 Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays TL F 9545–3 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 Storage Temperature Ambient Temperature under Bias Junction Temperature under Bias Plastic VCC Pin Potential to Ground Pin b 65 C to a 150 b 55 C to a 125 b 55 C to a 175 b 55 C to a 150 Recommended Operating Conditions Free Air Ambient Temperature Military Commercial Supply Voltage Military Commercial b 55 C to a 125 C 0 C to a 70 C a 4 5V to a 5 5V a 4 5V to a 5 5V C C C C b 0 5V to a 7 0V b 0 5V to a 7 0V Input Voltage (Note 2) b 30 mA to a 5 0 mA Input Current (Note 2) Voltage Applied to Output in HIGH State (with VCC e 0V) b 0 5V to VCC Standard Output b 0 5V to a 5 5V TRI-STATE Output Current Applied to Output in LOW State (Max) twice the rated IOL (mA) Note 1 Absolute maximum ratings are values beyond which the device may be damaged or have its useful life impaired Functional operation under these conditions is not implied Note 2 Either voltage limit or current limit is sufficient to protect inputs DC Electrical Characteristics Symbol VIH VIL VCD VOH Parameter Min Input HIGH Voltage Input LOW Voltage Input Clamp Diode Voltage Output HIGH Voltage Output LOW Voltage Input HIGH Current Input HIGH Current Breakdown Test Output HIGH Leakage Current Input Leakage Test Output Leakage Circuit Current Input LOW Current Output Short-Circuit Current Power Supply Current b 60 54F 74F Typ Max Units V 08 b1 2 VCC Conditions Recognized as a HIGH Signal Recognized as a LOW Signal 20 V V V Min Min IIN e b18 mA IOH e b1 mA IOH e b1 mA IOH e b1 mA IOL e 20 mA IOL e 20 mA VIN e 2 7V VIN e 7 0V VOUT e VCC IID e 1 9 mA All Other Pins Grounded VIOD e 150 mV All Other Pins Grounded VIN e 0 5V VOUT e 0V VO e HIGH 54F 10% VCC 74F 10% VCC 74F 5% VCC 54F 10% VCC 74F 10% VCC 54F 74F 54F 74F 54F 74F 74F 74F 25 25 27 05 05 20 0 50 100 70 250 50 4 75 3 75 b0 6 b 150 VOL IIH IBVI ICEX VID IOD IIL IOS ICCH V mA mA mA V mA mA mA mA Min Max Max Max 00 00 Max Max Max 21 32 3 AC Electrical Characteristics 74F Symbol Parameter Min tPLH tPHL tPLH tPHL Propagation Delay An or Bn to OA e B Propagation Delay IA e B to OA e B 30 45 30 35 TA e a 25 C VCC e a 5 0V CL e 50 pF Typ 70 70 50 65 Max 10 0 10 0 65 90 54F TA VCC e Mil CL e 50 pF Min 30 40 30 35 Max 14 0 15 0 85 13 5 74F TA VCC e Com CL e 50 pF Min 30 40 30 35 Max 11 0 11 0 75 10 0 ns ns Units Applications Ripple Expansion TL F 9545 – 6 Parallel Expansion TL F 9545 – 7 Ordering Information The device number is used to form part of a simplified purchasing code where the package type and temperature range are defined as follows 74F Temperature Range Family 74F e Commercial 54F e Military Device Type Package Code P e Plastic DIP D e Ceramic DIP F e Flatpak S e Small Outline SOIC JEDEC SJ e Small Outline SOIC EIAJ MSA e Shrink Small Outline (EIAJ SSOP) 521 S C X Special Variations QB e Military grade device with environmental and burn-in processing X e Devices shipped in 13 reel Temperature Range C e Commercial (0 C to a 70 C) M e Military (b55 C to a 125 C) NOTE Not required for MSA package code 4 Physical Dimensions inches (millimeters) 20-Lead Ceramic Dual-In-Line Package (D) NS Package Number J20A 20-Lead (0 300 Wide) Molded Small Outline Package JEDEC (S) NS Package Number M20B 5 Physical Dimensions inches (millimeters) (Continued) 20-Lead (0 300 Wide) Molded Small Outline Package EIAJ (SJ) NS Package Number M20D 20-Lead (0 300 Wide) Molded Dual-In-Line Package (P) NS Package Number N20A 6 Physical Dimensions inches (millimeters) (Continued) 20-Lead (0 300 Wide) Molded Shrink Outline Package EIAJ Type II (MSA) NS Package Number MSA20 7 54F 74F521 8-Bit Identity Comparator Physical Dimensions inches (millimeters) (Continued) 20-Lead Ceramic Flatpak (F) NS Package Number W20A 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 2900 Semiconductor Drive P O Box 58090 Santa Clara CA 95052-8090 Tel 1(800) 272-9959 TWX (910) 339-9240 National Semiconductor GmbH Livry-Gargan-Str 10 D-82256 F4urstenfeldbruck Germany Tel (81-41) 35-0 Telex 527649 Fax (81-41) 35-1 National Semiconductor Japan Ltd Sumitomo Chemical Engineering Center Bldg 7F 1-7-1 Nakase Mihama-Ku Chiba-City Ciba Prefecture 261 Tel (043) 299-2300 Fax (043) 299-2500 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 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 Semiconductores Do Brazil Ltda Rue Deputado Lacorda Franco 120-3A Sao Paulo-SP Brazil 05418-000 Tel (55-11) 212-5066 Telex 391-1131931 NSBR BR Fax (55-11) 212-1181 National Semiconductor (Australia) Pty Ltd Building 16 Business Park Drive Monash Business Park Nottinghill Melbourne Victoria 3168 Australia Tel (3) 558-9999 Fax (3) 558-9998 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