CD54AC191 Datasheet (Texas Instruments) - Presettable Synchronous 4-Bit Binary Up/Down Counter

CD54AC191, Presettable Synchronous 4-Bit Binary Up/Down Counter

The CD54AC191 and CD54ACT191 are asynchronously presettable binary up/down synchronous counters that utilize Advanced CMOS Logic technology.

Presetting the counter to the number on preset data inputs (P0-P3) is accomplished by setting LOW the asynchronous parallel load input (PL).

Counting occurs wh

CD54AC191 Features

* Buffered Inputs

* Typical Propagation Delay - 12.8ns at VCC = 5V, TA = 25oC, CL = 50pF

* Exceeds 2kV ESD Protection MIL-STD-883, Method 3015

* SCR-Latchup-Resistant CMOS Process and Circuit Design

* Speed of Bipolar FAST™/AS/S with Signiﬁcantly Reduced Power