Texas Instruments CD4029B

of b series cmos devices" applications: programmable binary and decade counting/frequency synthesizers-bcd output analog to digital and digital to analog conversion up/down binary counting magnitude and sign generation up/down decade counting difference counting cd4029b consists of a four-stage binary or bcd-decade up/down counter with provisions for look-ahead carry in both counting modes. the inputs consist of a single clock carry-in\ (clock enable\) binary/decade up/down preset enable and four individual jan signals q1 q2 q3 q4 and a carry out\ signal are provided as outputs. a high preset enable signal allows information on the jam inputs to preset the counter to any state asynchronously with the clock. a low on each jam line when the preset-enable signal is high resets the counter to its zero count. the counter is advanced one count at the positive transition of the clock when the carry-in\ and preset enalbe signals are low. advancement is inhibited when the carry-in\ or preset enable signals are high. view all in datasheet