74ACTQ646

Supply Voltage (V_CC) ........−0.5V to +7.0V
DC Input Diode Current (I_IK)
V_I = −0.5V ...................−20 mA
V_I = V_CC + 0.5V ................+20 mA
DC Input Voltage (V_I) ......−0.5V to VCC0.5V
DC Output Diode Current (I_OK)
VO = −0.5V .................. −20 mA
VO = VCC + 0.5V ...............+20 mA
DC Output Voltage (V_O) ..  −0.5V to VCC + 0.5V
DC Output Source
or Sink Current (I_O)..............±50 mA
DC VCC or Ground Current
per Output Pin (I_CC or I_GND)........ ±50 mA
Storage Temperature (T_STG).. −65°C to +150°C
DC Latch-Up Source
or Sink Current ................±300 mA
Junction Temperature (T_J)PDIP ........140°C

The 74ACTQ646 consist of registered bus transceiver circuits, with outputs, D-type flip-flops, and control circuitry providing multiplexed transmission of data directly from the input bus or from the internal storage registers. Data on the A or B bus will be loaded into the respective registers on the LOW-to-HIGH transition of the appropriate clock pin (CPAB or CPBA). The four fundamental handling functions available are illustrated in Figure 1, Figure 2, Figure 3 and Figure 4.

The 74ACTQ646 utilizes Fairchild Quiet Series technology to guarantee quiet output switching and improved dynamic threshold performance. FACT Quiet Series features GTO output control and undershoot corrector in addition to a split ground bus for superior performance.