Intersil CD74HCT191M

二进制计数器14.5 V ~ 5.5 V

Overview

The CD54/74HC190 are asynchronously presettable BCD decade counters, whereas the CD54/74HC191 and CD54/74HCT191 are asynchronously presettable binary counters.

If a decade counter is preset to an illegal state or assumes an illegal state when power is applied, it returns to the normal sequence in one or two counts, as shown in the state diagrams (see Figure 3).

Features

74HCT Series
Embedded in the 16-SOIC (0.154, 3.90mm Width) package
4 bits per element
RCO OUTPUT
Operating supply voltage of 5V
Frequency of 30MHz

Surface Mount Mounting Type

Applications

There are a lot of Texas Instruments
CD74HCT191M Counters & Dividers applications.

• Frequency dividing circuits
• Time delay circuits
• Communications Digital Frequency Synthesizers;
• VHF, UHF, FM, AM, etc.
• Fixed or Programmable Frequency Division
• Time Out Timer for Consumer-Application Industrial Controls
• Timing applications
• Clocks
• Up Counters
• Dual Up Counters