Page 5 - EE2449_TTL_Datasheet
P. 5

SN54/74LS02



             DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified)
                                                                 Limits
               Symbol               Parameter               Min   Typ   Max    Unit         Test Conditions
                                                                                     Guaranteed Input HIGH Voltage for
              V IH     Input HIGH Voltage                   2.0                 V
                                                                                     All Inputs
                                                      54                0.7          Guaranteed Input LOW Voltage for
                                                                                                         g
              V        Inp u t   LOW   V oltage                                 V V  All Inputs
                       Input LOW Voltage
              V IL IL
                                                      74                0.8
              V IK     Input Clamp Diode Voltage                 –0.65  –1.5    V    V CC  = MIN, I IN  = –18 mA
                                                      54    2.5   3.5           V    V CC  = MIN, I OH  = MAX, V IN  = V IH IH
                                                                                                        IN
                                                                                      CC
                                                                                              OH
                       Output HIGH Voltageoltage
              V OH     O u tp u t   HIGH   V                                         or V IL  per Truth Table
              V OH
                                                      74    2.7   3.5           V
                                                    54, 74        0.25  0.4     V    I OL  = 4.0 mA  V CC  = V CC  MIN,
                             LOW

                            t
                                  oltage
                                 V

                           u
                         u
                       O
                          tp
                                                                                                   V IN =V IL or V IHIN  = V IL  or V IH
              V OL     Output LOW Voltage                                                          V
              V OL
                                                      74          0.35  0.5     V    I OL  = 8.0 mA  per Truth Table
                                                                         20    mA    V CC  = MAX, V IN  = 2.7 V
                       Input HIGH Current
              I I IHIH  Inp u t   HIGH   C u rrent
                                                                        0.1    mA    V CC  = MAX, V IN  = 7.0 V
              I IL     Input LOW Current                                –0.4   mA    V CC  = MAX, V IN  = 0.4 V
              I OS     Short Circuit Current (Note 1)       –20         –100   mA    V CC  = MAX
                       Power Supply Current
                         Total, Output HIGH                             3.2
                                                                                      CC
              I CC                                                             mA    V CC  = MAX
               CC
                         Total, Output LOW                              5.4
             Note 1: Not more than one output should be shorted at a time, nor for more than 1 second.
             AC CHARACTERISTICS (T A  = 25°C)
                                                                 Limits
               Symbol               Parameter               Min   Typ   Max    Unit         Test Conditions
              t PLH    Turn-Off Delay, Input to Output            10     15    ns             V CC  = 5.0 V
                                                                                               CC
              t PHL    Turn-On Delay, Input to Output             10     15    ns             C L  = 15 pF

























                                                    FAST AND LS TTL DATA
                                                              5-7
                                                                                          www.AirSuplyLab.com
                                                                                          www.AirSuplyLab.com
   1   2   3   4   5   6   7   8   9   10