CD54AC191
Description
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).
Key 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 Consumption
- Balanced Propagation Delays
- AC Types Feature 1.5V to 5.5V Operation and Balanced Noise Immunity at 30% of the Supply
- ±24mA Output Drive Current - Fanout to 15 FAST™ ICs - Drives 50Ω Transmission Lines
