TC4521BP

TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic TC4521BP TC4521BP 24-Stage Frequency Divider TC4521BP TC4521BP is frequency divider consisting of 24 stages of flip-flop. The input section is equipped with an inverter to enable to use either RC oscillator circuit or crystal oscillator circuit and to accept pulse from external clock source. Each flip-flop is inverted by the falling edge of the output of previous stage flip-flop and this can count up to the maximum of 224 = 16,777,216. Since six outputs, 218, 219, 220, 221, 222, and 223 are available besides of 224, adjustment of frequency divided output can be achieved. Pin Assignment Weight: 1.00 g (typ.) Count Capacity Output Q18 Q19 Q20 Q21 Q22 Q23 Q24 Count Capacity 218 = 262,144 219 = 524,288 220 = 1,048,576 221 = 2,097,152 222 = 4,194,304 223 = 8,388,608 224 = 16,777,216 Start of commercial production 1978-04 1 2014-03-01 Block Diagram TC4521BP 2 2014-03-01 Logic Diagram TC4521BP Internal Flip Flop Logic Dia...