The 74HC/HCT4520 is a dual 4-bit synchronous binary counter with standard output capability and MSI ICC category. It is a high-speed Si-gate CMOS device and is pin compatible with the '4520' of the '4000B' series.
The Philips 74HC/HCT4520 is a high-speed Si-gate CMOS device designed as a dual 4-bit internally synchronous binary counter. It is pin compatible with the '4520' of the '4000B' series and complies with JEDEC standard no. 7A. The device features buffered outputs from all four bit positions and an active HIGH overriding asynchronous master reset input.
| Logic Category | MSI |
|---|---|
| Output Capability | standard |
| Maximum Clock Frequency (HC) | 68 MHz |
| Input Capacitance | 3.5 pF |
The device is suitable for multistage synchronous counting, multistage asynchronous counting, and frequency dividers.
The maximum clock frequency is 68 MHz for the HC version and 64 MHz for the HCT version.
The required clock pulse width is 10 ns for the 74HCT version.