HEF4521B Datasheet - nexperia

HEF4521B 24-stage frequency divider and oscillator

The HEF4521B consists of a chain of 24 toggle flip-flops with an overriding asynchronous master reset input (MR), and an input circuit that allows three modes of operation. The single inverting stage (A2 to Y2) functions as: a crystal oscillator, an input buffer for an external oscillator or in com.

HEF4521B Features

* Low power crystal oscillator operation

* Fully static operation

* 5 V, 10 V, and 15 V parametric ratings

* Standardized symmetrical output characteristics

* Specified from 40 C to +85 C

* Complies with JEDEC standard JESD 13-B 3. Ordering information Table 1. Ordering

HEF4521B-nexperia.pdf