TC74HC279AP/AF IEC Logic Symbol (2) & 1S1 S1 (3) (4) 1S2 1 1Q (1) R 1R (6) 2S S2 (7) (5) 2 2Q 2R (11) R 3S1 & (12) S3 3S2 (9) (10) 3 3Q 3R R (15) 4S S4 (13) (14) 4 4Q 4R R Truth Table Inputs Output S # R Q H H Qn L H H H L L L L H Qn: The level of Q before the indicated input condition were established. #: For latches with doubles S input. H = Both S input high L = One of both inputs low System Diagram 2 2014-03-01 Document Outline TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic Features Pin Assignment IEC Logic Symbol Truth Table System Diagram Absolute Maximum Ratings (Note 1) Operating Ranges (Note) Electrical Characteristics DC Characteristics AC Characteristics (CL ( 15 pF, VCC ( 5 V, Ta ( 25°C, input: tr ( tf ( 6 ns) AC Characteristics (CL ( 50 pF, input: tr ( tf ( 6 ns) Package Dimensions Package Dimensions RESTRICTIONS ON PRODUCT USE
