SN74HC4020

14位异步二进制计数器 14-BIT ASYNCHRONOUS BINARY COUNTERS

description/ordering information

The ’HC4020 devices are 14-stage binary ripple-carry counters that advance on the negative-going edge of the clock pulse. The counters are reset to zero all outputs low independently of the clock CLK input when the clear CLR input goes high.

● Wide Operating Voltage Range of 2 V to 6 V

● Outputs Can Drive Up To 10 LSTTL Loads

● Low Power Consumption, 80-µA Max ICC

● Typical tpd = 12 ns

● ±4-mA Output Drive at 5 V

● Low Input Current of 1 µA Max