The DM74LS279 consists of four individual and independent Set-Reset Latches with active low inputs. Two of the four latches have an additional 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 wil.
ding the suffix letter “X” to the ordering code. Connection Diagram Function Table Inputs S (Note 1) L L H H R L H L H Output Q H (Note 2) H L Q0 H = HIGH Level L = LOW Level Q0 = The Level of Q before the indicated input conditions were established. Note 1: For latches with double S inputs: H = both S inputs HIGH L = one or both S inputs LOW Note 2: This output level is pseudo stable; that is, it may not persist when the S and R inputs return to their inactive (HIGH) level. © 2000 Fairchild Semiconductor Corporation DS006420 www.fairchildsemi.com DM74LS279 Absolute Maximum Ratings(Not.
19.20 20.00 Max 16 9 7.40 Max 6.30 Unit: mm 1 1.3 1.11 Max 8 0.51 Min 2.54 Min 5.06 Max 7.62 2.54 ± 0.25 0.48 ± .
The ’LS279 consists of four individual and independent SetReset Latches with active low inputs Two of the four latches h.
No. | Partie # | Fabricant | Description | Fiche Technique |
---|---|---|---|---|
1 | 74LS27 |
Hitachi Semiconductor |
Triple 3-input Positive NOR Gates | |
2 | 74LS273 |
Mitsubishi Electric Semiconductor |
OCTAL POSITIVE EDGE-TRIGGERED D-TYPE FLIP-FLOP | |
3 | 74LS273 |
ON Semiconductor |
LOW POWER SCHOTTKY | |
4 | 74LS273 |
Fairchild Semiconductor |
8-Bit Register | |
5 | 74LS273 |
Hitachi Semiconductor |
Octal D-type Positive-edge-triggered Flip-Flops | |
6 | 74LS273 |
National Semiconductor |
8-Bit Register | |
7 | 74LS273 |
Motorola |
OCTAL D FLIP-FLOP | |
8 | 74LS273P |
Mitsubishi |
M74LS273P | |
9 | 74LS20 |
Fairchild Semiconductor |
Dual 4-Input NAND Gate | |
10 | 74LS20 |
Hitachi Semiconductor |
Dual 4-input Positive NAND Gates | |
11 | 74LS20 |
National Semiconductor |
Dual 4-Input NAND Gates | |
12 | 74LS20 |
Motorola |
DUAL 4-INPUT NAND GATE |