SN54HC244

Pinout




Specifications

Supply voltage range, V_CC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-0.5 V to 7 V 
Input clamp current, I_IK (V_I< 0 or V_I > V _CC) (see Note 1)  . . . . . . . . . . . . . .±20 mA
Output clamp current, I_OK(V_I< 0 or V_I> V_CC ) (see Note 1)  . . . . . . . . . . . . .±20 mA
Continuous output current, I_O(V_O  = 0 to V_CC ). . . . . . . . . . . . . . . . . . . . . . .±35 mA
Continuous current through V_CC or GND   . . . . . . . . . . . . . . . . . . . . . . . . . . .±70 mA
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
                                                                          PW package   . . . . . . . . . . . 83°C/W
Storage temperature range, T_stg  . . . . . . . . . . . . . . . . . . . . . . .  . . . . . .-65 to 150


Description

These octal buffers and line drivers are designed specifically to improve both the performance and density of 3-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters. The 'HC244 devices are organized as two 4-bit buffers/drivers with separate output-enable (OE) inputs. When OE is low,the HC244 passes noninverted data from the A inputs to the Y outputs. When OE is high, the outputs are in the high-impedance state.