74HCT4040DB集成电路（IC）的计数器除法器规格书PDF中文资料

General description

The 74HC4040; 74HCT4040 are high-speed Si-gate CMOS devices and are pin compatible with the HEF4040B series. They are specified in compliance with JEDEC standard no. 7A.

The 74HC4040; 74HCT4040 are 12-stage binary ripple counters with a clock input (CP), an overriding asynchronous master reset input (MR) and twelve parallel outputs (Q0 to Q11). The counter advances on the HIGH-to-LOW transition of CP.

A HIGH on MR clears all counter stages and forces all outputs LOW, independent of the state of CP.

Each counter stage is a static toggle flip-flop.

特性 Features

■ Multiple package options

■ Complies with JEDEC standard no. 7A

■ ESD protection:

◆ HBM JESD22-A114-C exceeds 2000 V

◆ MM JESD22-A115-A exceeds 200 V

■ Specified from −40 °C to +85 °C and from −40 °C to +125 °C

Applications

■ Frequency dividing circuits

■ Time delay circuits

■ Control counters