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SN74LS684 Dataheets PDF



Part Number SN74LS684
Manufacturers ON Semiconductor
Logo ON Semiconductor
Description 8-Bit Magnitude Comparators
Datasheet SN74LS684 DatasheetSN74LS684 Datasheet (PDF)

SN74LS682, SN74LS684, SN74LS688 8−Bit Magnitude Comparators The SN74LS682, 684, 688 are 8-bit magnitude comparators. These device types are designed to perform comparisons between two eight-bit binary or BCD words. All device types provide P = Q outputs and the LS682 and LS684 have P>Q outputs also. The LS682, LS684 and LS688 are totem pole devices. The LS682 has a 20 kΩ pullup resistor on the Q inputs for analog or switch data. TYPE LS682 LS684 LS688 P=Q yes yes yes P>Q yes yes no OUTPUT .

  SN74LS684   SN74LS684


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SN74LS682, SN74LS684, SN74LS688 8−Bit Magnitude Comparators The SN74LS682, 684, 688 are 8-bit magnitude comparators. These device types are designed to perform comparisons between two eight-bit binary or BCD words. All device types provide P = Q outputs and the LS682 and LS684 have P>Q outputs also. The LS682, LS684 and LS688 are totem pole devices. The LS682 has a 20 kΩ pullup resistor on the Q inputs for analog or switch data. TYPE LS682 LS684 LS688 P=Q yes yes yes P>Q yes yes no OUTPUT ENABLE no no yes OUTPUT CONFIGURATION totem-pole totem-pole totem-pole PULLUP yes no no GUARANTEED OPERATING RANGES Symbol Parameter Min Typ Max Unit VCC Supply Voltage TA Operating Ambient Temperature Range 4.75 5.0 5.25 V 0 25 70 °C IOH Output Current − High IOL Output Current − Low − 0.4 mA 24 mA http://onsemi.com LOW POWER SCHOTTKY MARKING DIAGRAMS 20 1 PDIP−20 N SUFFIX CASE 738 SN74LS68xN AWLYYWW 1 20 LS68x SOIC−20 1 DW SUFFIX AWLYYWW CASE 751D x = 2, 4, or 8 A = Assembly L1ocation WL = Wafer Lot YY = Year WW = Work Week ORDERING INFORMATION Device Package Shipping SN74LS682N PDIP−20 1440 Units/Box SN74LS682DW SOIC−WIDE 38 Units/Rail SN74LS682DWR2 SOIC−WIDE 2500/Tape & Reel SN74LS684N PDIP−20 1440 Units/Box SN74LS684DW SOIC−WIDE 38 Units/Rail SN74LS684DWR2 SOIC−WIDE 2500/Tape & Reel SN74LS688N PDIP−20 1440 Units/Box SN74LS688DW SOIC−WIDE 38 Units/Rail SN74LS688DWR2 SOIC−WIDE 2500/Tape & Reel © Semiconductor Components Industries, LLC, 2006 1 July, 2006 − Rev. 9 Publication Order Number: SN74LS682/D SN74LS682, SN74LS684, SN74LS688 CONNECTION DIAGRAMS (TOP VIEW) VCC P=Q Q7 P7 Q6 P6 Q5 P5 Q4 P4 20 19 18 17 16 15 14 13 12 11 SN74LS682/684 1 2 3 4 5 6 7 8 9 10 P>Q P0 Q0 P1 Q1 P2 Q2 P3 Q3 GND VCC P=Q Q7 P7 Q6 P6 Q5 P5 Q4 P4 20 19 18 17 16 15 14 13 12 11 SN74LS688 1 2 3 4 5 6 7 8 9 10 G P0 Q0 P1 Q1 P2 Q2 P3 Q3 GND FUNCTION TABLE INPUTS OUTPUTS DATA ENABLES P, Q G, GT G2 P = Q P > Q P=Q P>Q P Q P0 (2) Q0 (3) SN74LS682 and LS684 G (1) SN74LS688 (19) P=Q http://onsemi.com 4 SN74LS682, SN74LS684, SN74LS688 AC CHARACTERISTICS (TA = 25°C) SN74LS682 Limits Symbol Parameter Min Typ Max Unit tPLH tPHL Propagation Delay, P to P = Q tPLH tPHL Propagation Delay, Q to P = Q tPLH tPHL Propagation Delay, P to P > Q 13 15 25 25 ns 14 15 25 25 ns 20 15 30 30 ns tPLH tPHL Propagation Delay, Q to P > Q 21 19 30 30 ns SN74LS684 Limits Symbol tPLH tPHL Parameter Propagation Delay, P to P = Q Min Typ Max Unit 15 17 25 25 ns tPLH tPHL Propagation Delay, Q to P = Q tPLH tPHL Propagation Delay, P to P > Q tPLH tPHL Propagation Delay, Q to P > Q 16 15 25 25 ns 22 17 30 30 ns 24 20 30 30 ns SN74LS688 Limits Symbol tPLH tPHL tPLH tPHL Parameter Propagation Delay, P to P = Q Propagation Delay, Q to P = Q Min Typ Max Unit 12 17 18 23 ns 12 17 18 23 ns tPLH tPHL Propagation Delay, G , G1 to P = Q 12 13 18 20 ns Test Conditions VCC = 5.0 V CL = 45 pF RL = 667 Ω Test Conditions VCC = 5.0 V CL = 45 pF RL = 667 Ω Test Conditions VCC = 5.0 V CL = 45 pF RL = 667 Ω http://onsemi.com 5 SN74LS682, SN74LS684, SN74LS688 PACKAGE DIMENSIONS −A− 20 1 −T− SEATING PLANE E G F N SUFFIX PLASTIC PACKAGE CASE 738−03 ISSUE E 11 B 10 C K N D 20 PL 0.25 (0.010) M T A M L M J 20 PL 0.25 (0.010) M TBM NOTES: 1. DIMENSIONING AND TOLERANCING PER ANS.


SN74LS688 SN74LS684 SN74LS682


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