Description
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Genuine and original Philips parts.
The HEF4020BDB is a 14-stage binary ripple counter integrated circuit originally manufactured by Philips Semiconductors (now NXP / Nexperia). It is housed in a 16-pin ceramic dual in-line package (16 C-DIP), these were higher spec than the ordinary plastic type, intended for high-reliability or military/industrial environments).
Part of the standard 4000 series CMOS logic family.
DESCRIPTION
The HEF4020B is a 14-stage binary ripple counter with a clock input (CP), an overriding asynchronous master reset input (MR) and twelve fully buffered outputs. 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. A feature of the HEF4020B is: high speed (typ. 35 MHz at VDD= 15 V)
Key Specifications & Features
- Function: 14-stage binary ripple counter
- Output Configuration: 12 buffered parallel outputs (Q₀, and Q₃ to Q₁₃). (Note: Q₁ and Q₂ are not brought out to pins).
- Clock Input (CP): Advances the count on a HIGH-to-LOW (falling edge) transition.
- Master Reset (MR): Overriding asynchronous input. A HIGH level resets all stages and forces all outputs LOW.
- Package Type: 16-pin ceramic (16 C-DIP) (denoted by the suffix suffix variants like “BDB”)
Pin Configuration (Standard 16-Pin DIP)
- Pin 1 to Pin 7: Outputs (Q₁₁, Q₉, Q₈, Q₁₂, Q₁₃, Q₆, Q₄)
- Pin 8: \(V_{SS}\) (Ground)
- Pin 9: Output (Q₀)
- Pin 10: Clock Input (\(\overline{CP}\))
- Pin 11: Master Reset (MR)
- Pin 12 to Pin 15: Outputs (Q₃, Q₂ omitted, Q₅, Q₇, Q₁₀)
- Pin 16: \(V_{DD}\) (Supply Voltage)
For datasheet search…Philips HEF4020BDB
Or go directly to…
https://www.alldatasheet.com/datasheet-pdf/view/17693/PHILIPS/HEF4020BD.html
PLEASE NOTE!
These parts came to us as part of a lot of surplus stock from a large distribution Co. and have been kept in storage for a time, we have therefore classified them as ‘new other’, they are however pristine, stored with us still in their original packaging/tubes, and, as with all our products they come with a full guarantee.
If you have similar items to this, or indeed any electronic components that are surplus to requirements please contact us with details.
