74374

M54/74HC374 M54/74HC534 OCTAL D-TYPE FLIP FLOP WITH 3 STATE OUTPUT HC374 NON INVERTING - HC534 INVERTING HIGH SPEED fMAX = 77 MHz (TYP.) AT VCC = 5 V LOW POWER DISSIPATION ICC = 4 µA (MAX.) AT TA = 25 °C www.DataSheet4U.com HIGH NOISE IMMUNITY VNIH = VNIL = 28 % VCC (MIN) OUTPUT DRIVE CAPABILITY 15 LSTTL LOADS SYMMETRICAL OUTPUT IMPEDANCE IOL = IOH= 6 mA (MIN.) BALANCED PROPAGATION DELAYS tPLH = tPHL WIDE OPERATING VOLTAGE RANGE VCC (OPR) = 2 V TO 6 V PIN AND FUNCTION COMPATIBLE WITH 54/74LS374/534 DESCRIPTION The M54/74HC374, M54/74HC534, are high speed CMOS OCTAL D-TYPE FLIP FLOP WITH 3-STATE OUTPUTS fabricated with in silicon gate C 2MOS technology. They have the same high speed performance of LSTTL combined with true CMOS low power comsuption. These8-bit D-type flip-flops are controlled by a clock input (CK) and an ouput enable input (OE). On the positive transition of the clock, the Q outputs will be set to the logic state that were setup at the D inputs (HC374) or their complements (HC534). While the OE input is low, the eight outputs will be in a normal logic state (high or low logic level), and PIN CONNECTION (top view) while high level, the outputs will be in a high impedance state. The output control does not affect the internal operation of flip-flops. That is, the old data can be retained or the new data can be entered even while the outputs are off. The application engineer has a choice of combination of inverting and non-inverting outputs. The HC374 and HC574 ...