HD151011 Datasheet - Hitachi Semiconductor

HD151011 Dual BCD Programmable Counter with Synchronous Preset Enable

Down count at the rise edge of clock (CLK), Down count at the fall edge of clock ( CLK ) Jn data is preset at the rise of clock (CLK), the fall of clock (CLK ) Clock inputs (CLK, CLK ) is CMOS level Clock inputs (CLK, CLK ) is TTL level Initialize of Q = "L" Initialize of Q = "H" H: High level L: L.

HD151011 Dual BCD Programmable Counter with Synchronous Preset Enable ADE-205-100(Z) Rev 0 April 1995 The HD151011 has BCD decimal two digits down counter and D-type Flip Flop. The counter can set up to max 99 counts and synchronous preset ( SPE) input can preset the data. When the count value is 0, the next clock pulse presets the data to invert the output. D-type Flip Flop takes the counter output as clock pulse, whose data is transferred to output at the rise edge. It is applied to generate .

HD151011 Features

* High speed operation tpd (CLK or CLK to Q) = 35 ns (typ)

* High output current Fanout of 10 LS TTL Loads

* Wide operating voltage Vcc = 2 to 6 V

* Low supply current (Ta = 25°C) Icc (Static) = 4 µA (max) HD151011 Function Table Control Inputs CLR H X

HD151011_HitachiSemiconductor.pdf