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HEF4520 Datasheet PDF

Part Series:HEF4520 Series
Category:Logic ICs
Description:* Tolerant of slow clock rise and fall times * Fully static operation * 5V, 10V, and 15V parametric ratings * Standardized symmetrical output characteristics * Specified from -40℃ to +85℃ * Complies with JEDEC standard JESD 13B
Document:HEF4520BT,652 Datasheet PDF (26 Pages)

HEF4520 Datasheet PDF Logic ICs

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HEF4520BT,653 - NXP Specifications

TYPE
DESCRIPTION
Mounting Style
Surface Mount
Number of Pins
16 Pin
Case/Package
SOIC-16
Number of Outputs
4 Output
Number of Bits
4 Bit
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HEF4520BT,653 - NXP Function Overview

General description
The HEF4520B is a dual 4-bit internally synchronous binary counter. The counter has an active HIGH clock input (nCP0) and an active LOW clock input (nCP1), buffered outputs from all four bit positions (nQ0 to nQ3) and an active HIGH overriding asynchronous master reset input (nMR).
The counter advances on either the LOW-to-HIGH transition of the nCP0 input if nCP1 is HIGH or the HIGH-to-LOW transition of the nCP1 input if nCP0 is LOW. Either nCP0 or nCP1 may be used as the clock input to the counter while the other clock input may be used as a clock enable input. Schmitt trigger action makes the clock input highly tolerant of slower clock rise and fall times. A HIGH on nMR resets the counter (nQ0 to nQ3 = LOW) independent of nCP0 and nCP1.
It operates over a recommended VDDpower supply range of 3 V to 15 V referenced to VSS
(usually ground). Unused inputs must be connected to VDD, VSS, or another input.
Features and benefits
 Tolerant of slow clock rise and fall times
 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
show more
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