SN74LS244

Pinout




Specifications

Supply voltage, V_CC(see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
Input voltage, V_I:'LS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
                            'S. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  5.5 V
Off-state output voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . . . . 5.5 V
Package thermal impedance, _JA(see Note 2):DB package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70°C/W
                                                                         DW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58°C/W
                                                                         N package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69°C/W
                                                                         NS package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60°C/W
Storage temperature range, T_stg. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65°C to 150°C



Description

These octal buffers and line drivers are designed specifically to improve both the performance and density of three-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters. The designer has a choice of selected combinations of inverting and noninverting outputs, symmetrical, active-low output-control (G</a>) inputs, and complementary output-control (G and G</a>) inputs. These devices feature high fan-out, improved fan-in, and 400-mV noise margin. The SN74LS' and SN74S' devices can be used to drive terminated lines down to 133 Ω.