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74F521
54F 74F521 8-Bit Identity Comparator General Description Features 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 Y Commercial Military 74F521PC Y Y Compares two 8-bit words in 6 5 ns typ Expandable to any word length 20-pin package Package Number Package Description N20A 54F521DM (Note 2) 20-Lead (0 300 Wide) Molded Dual-In-Line J20A 20-Lead Ceramic Dual-In-Line 74F521SC (Note 1) M20B 20-Lead (0 300 Wide) Molded Small Outline JEDEC 74F521SJ (Note 1) M20D 20-Lead (0 300 Wide) Molded Small Outline EIAJ 74F521MSA (Note 1) MSA20 20-Lead Molded Shrink Small Outline EIAJ type II 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 54F 74F521 8-Bit Identity Comparator May 1995 Absolute Maximum Ratings (Note 1) Recommended Operating Conditions If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications Storage Temperature b 65 C to a 150 b 55 C to a 125 b 55 C to a 175 b 55 C to a 150 Ambient Temperature under Bias Junction Temperature under Bias Plastic Free Air Ambient Temperature Military Commercial C C C C b 55 C to a 125 C 0 C to a 70 C Supply Voltage Military Commercial a 4 5V to a 5 5V a 4 5V to a 5 5V VCC Pin Potential to Ground Pin 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 54F 74F Parameter Min VIH Input HIGH Voltage VIL Typ Input LOW Voltage Units VCC Conditions Max 20 V Recognized as a HIGH Signal 08 V Recognized as a LOW Signal b1 2 V Min IIN e b18 mA V Min IOH e b1 mA IOH e b1 mA IOH e b1 mA VCD Input Clamp Diode Voltage VOH Output HIGH Voltage 54F 10% VCC 74F 10% VCC 74F 5% VCC VOL Output LOW Voltage 54F 10% VCC 74F 10% VCC 05 05 V Min IOL e 20 mA IOL e 20 mA IIH Input HIGH Current 54F 74F 20 0 50 mA Max VIN e 2 7V IBVI Input HIGH Current Breakdown Test 54F 74F 100 70 mA Max VIN e 7 0V ICEX Output HIGH Leakage Current 54F 74F 250 50 mA Max VOUT e VCC VID Input Leakage Test 74F V 00 IID e 1 9 mA All Other Pins Grounded IOD Output Leakage Circuit Current 74F 3 75 mA 00 VIOD e 150 mV All Other Pins Grounded IIL Input LOW Current IOS Output Short-Circuit Current ICCH Power Supply Current 25 25 27 4 75 b0 6 21 3 mA Max VIN e 0 5V b 150 b 60 mA Max VOUT e 0V 32 mA Max VO e HIGH
NS
National Semiconductor Corporation 日本ではナショセミと略称されていたが2011年9月23日、米TI社に買収され、同社のシリコンバレー部門となった。
TI
Texas Instruments Incorporated
U.S.A
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