HEF4521BT NXP Semiconductors, HEF4521BT Datasheet

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HEF4521BT

Manufacturer Part Number
HEF4521BT
Description
IC, 4000 LOCMOS, SMD, 4521, SOIC16
Manufacturer
NXP Semiconductors
Datasheet

Specifications of HEF4521BT

Clock Frequency
35MHz
Count Maximum
24
Supply Voltage Range
4.5V To 15.5V
Logic Case Style
SOIC
No. Of Pins
16
Operating Temperature Range
-40°C To +70°C
Svhc
No SVHC (18-Jun-2010)
Package /
RoHS Compliant
Base Number
4521
Rohs Compliant
Yes
Product specification
File under Integrated Circuits, IC04
DATA SHEET
HEF4521B
MSI
24-stage frequency divider and
oscillator
For a complete data sheet, please also download:
The IC04 LOCMOS HE4000B Logic
Family Specifications HEF, HEC
The IC04 LOCMOS HE4000B Logic
Package Outlines/Information HEF, HEC
INTEGRATED CIRCUITS
January 1995

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HEF4521BT Summary of contents

Page 1

DATA SHEET For a complete data sheet, please also download: The IC04 LOCMOS HE4000B Logic Family Specifications HEF, HEC The IC04 LOCMOS HE4000B Logic Package Outlines/Information HEF, HEC HEF4521B MSI 24-stage frequency divider and oscillator Product specification File under Integrated ...

Page 2

Philips Semiconductors 24-stage frequency divider and oscillator DESCRIPTION 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 ...

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... Philips Semiconductors 24-stage frequency divider and oscillator Fig.2 Pinning diagram. HEF4521BP(N): 16-lead DIL; plastic (SOT38-1) HEF4521BD(F): 16-lead DIL; ceramic (cerdip) (SOT74) HEF4521BT(D): 16-lead SO; plastic (SOT109- Package Designator North America FUNCTIONAL TEST SEQUENCE INPUTS test function has been included for the reduction of the test time required to exercise all 24 counter stages ...

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Acrobat reader. white to force landscape pages to be ... Fig.3 Logic diagram; for schematic diagram of clock circuit see Fig.4. ...

Page 5

Philips Semiconductors 24-stage frequency divider and oscillator AC CHARACTERISTICS pF; input transition times SS amb Propagation delays HIGH to LOW LOW ...

Page 6

Philips Semiconductors 24-stage frequency divider and oscillator Output transition times HIGH to LOW LOW to HIGH AC CHARACTERISTICS pF; input transition times SS amb L V ...

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Philips Semiconductors 24-stage frequency divider and oscillator Fig.5 Waveforms showing minimum pulse widths for MR and I January 1995 , recovery time for MR Product specification HEF4521B MSI ...

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Philips Semiconductors 24-stage frequency divider and oscillator APPLICATION INFORMATION (1) Optional for low power operation. Typical characteristics for crystal oscillator circuit (Fig.6): Crystal characteristics resonance frequency crystal cut equivalent resistance External resistor/capacitor values ...

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Philips Semiconductors 24-stage frequency divider and oscillator January 1995 Fig.7 RC oscillator circuit ----------------------------------- - ; 2 Hz maximum input voltage ...

Page 10

Philips Semiconductors 24-stage frequency divider and oscillator Fig.9 Test set-up for measuring forward transconductance g A: average, B: average + average which: ‘s’ is the observed standard deviation. Fig.10 Typical forward transconductance g January ...

Page 11

Philips Semiconductors 24-stage frequency divider and oscillator Fig.11 Voltage gain function of supply O I voltage. Fig.13 Test set-up for measuring graphs of Figs 11 and 12. January 1995 Fig.12 Supply current as a function of ...

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