SN74LS221

Supply voltage range, V _CC  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . . . . . 7 V

Input voltage range, V_I (see Note 1): 'LS221  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . 7 V

                                                           '221 5.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . 5 V
Package thermal impedance, _JA (see Note 2): D package  . . . . . . . . . . . . . . . . . . . .. . ..73°C/W
                                                                          DB package  . . . . . . . . . . . . . . . . . . . . .  82°C/W
                                                                          N package  . . . . . . . . . . . . . . . . . . . . . .  67°C/W
                                                                          NS package  . . . . . . . . . . . . . . . . . . . . .  64°C/W
Storage temperature range, T_stg  -65. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  .   to 150   

The '221 and 'LS221 devices are dual multivibrators with performance characteristics virtually identical to those of the '121 devices. Each multivibrator features a negative-transition-
triggered input and a positive-transition-triggered input, either of which can be used as an inhibit input.