HEF4020BT
The HEF4020B is a 14-stage binary ripple counter with a clock input (CP), an overriding
asynchronous master reset input (MR) and 12 buffered parallel outputs (Q0, and Q3 to Q13). The
counter advances on the HIGH-to-LOW transition of CP. A HIGH on MR clears all counter stages
and forces all outputs LOW, independent of the state of CP. Each counter stage is a static toggle
flip-flop. Inputs include clamp diodes. This enables the use of current limiting resistors to interface
inputs to voltages in excess of VDD.
This product has been qualified to the Automotive Electronics Council (AEC) standard Q100
(Grade 3) and is suitable for use in automotive applications.
HEF4067BT
The HEF4067B is a single-pole 16-throw analog switch (SP16T) suitable for use in analog or digital
16:1 multiplexer/demultiplexer applications. The switch features four digital select inputs A0, A1, A2
and A3), sixteen independent inputs/outputs (Yn), a common input/output (Z) and a digital enable
input (E). When E is HIGH, the switches are turned off. Inputs include clamp diodes. This enables
the use of current limiting resistors to interface inputs to voltages in excess of VDD.
