DM54LS279 - National Semiconductor

DM54LS279 Quad S-R Latches

The ’LS279 consists of four individual and independent SetReset Latches with active low inputs Two of the four latches have an additonal S input ANDed with the primary S input A low on any S input while the R input is high will be stored in the latch and appear on the corresponding Q output as a high A low on the R input while the S input is high will clear .

Features

Y Alternate military aerospace device (54LS279) is available Contact a National Semiconductor Sales Office Distributor for specifications Connection Diagram Dual-In-Line Package TL F 6420
  – 1 Order Number 54LS279DMQB 54LS279FMQB 54LS279LMQB DM54LS279J DM74LS279M or DM74LS279N See NS Package Number E20A J16A M16A N16E or W16A Function Table Inputs Output S(1) R Q LL LH HL HH H H L Q0 H e High Level L e Low Level Q0 e The Level of Q before the indicated input conditions were established This output level is pseudo stable that is it may not persist when the S and R inputs return to the.