Datasheet4U Logo Datasheet4U.com

DM74LS279 Datasheet Quad S-r Latches

Manufacturer: National Semiconductor (now Texas Instruments)

Overview: 54LS279 DM54LS279 DM74LS279 Quad S-R Latches May 1989 54LS279 DM54LS279 DM74LS279 Quad S-R Latches.

General Description

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 the Q output to a low Simultaneous transistion of the R and S inputs from low to high will cause the Q output to be indeterminate Both inputs are voltage level triggered and are not affected by transition time of the input data

Key Features

  • Y Alternate military aerospace device (54LS279) is available Contact a National Semiconductor Sales Office Distributor for specifications Connection Diagram Dual-In-Line Package Obsolete 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 condition.

Similar Datasheet

Brand Logo Part Number Description Manufacturer
Fairchild Semiconductor Logo DM74LS279 Quad S-R Latch Fairchild Semiconductor

More Datasheets from National Semiconductor (now Texas Instruments)

Part Number Description
DM74LS273 8-BIT REGISTER
DM74LS20 Dual 4-Input NAND Gates
DM74LS21 Dual 4-Input AND Gates
DM74LS22 Dual 4-Input NAND Gates
DM74LS221 Dual Non-Retriggerable One-Shot
DM74LS240 Octal TRI-STATE Buffers/Line Drivers/Line Receivers
DM74LS241 Octal TRI-STATE Buffers/Line Drivers/Line Receivers
DM74LS244 Octal TRI-STATEE Buffers/Line Drivers/Line Receivers
DM74LS245 TRI-STATE Octal Bus Transceiver
DM74LS247 BCD to 7-Segment Decoder/Driver

DM74LS279 Distributor