HEF4521B NXP Semiconductors, HEF4521B Datasheet
HEF4521B
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HEF4521B Summary of contents
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... 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 Circuits, IC04 ...
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... 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 ( will function as a crystal 2 2 oscillator combination with input buffer for an external oscillator ...
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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 ...
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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. ...
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... PLH 120 PHL PHL PLH Product specification HEF4521B TYPICAL MAX. EXTRAPOLATION FORMULA 1900 ns 923 ns 700 ns 339 ns 440 ns 212 ns 1900 ns 923 ns 700 ns 339 ns 440 ns 212 ...
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... MAX see also waveforms ns Fig MHz MHz MHz 2 where input freq. (MHz output freq. (MHz load capacitance (pF sum of outputs supply voltage (V) DD HEF4521B MSI (1,0 ns/pF (0,42 ns/pF (0,28 ns/pF (1,0 ns/pF (0,42 ns/pF (0,28 ns/pF ...
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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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... Crystal characteristics resonance frequency crystal cut equivalent resistance External resistor/capacitor values January 1995 Fig.6 Crystal oscillator circuit. 500 kHz CIRCUIT 500 Product specification HEF4521B MSI 50 kHz UNIT CIRCUIT 50 kHz N 6,2 k 750 ...
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... Hz maximum input voltage LOW IL max ----------------- - input leakage current LI Fig.8 9 Product specification HEF4521B MSI in which nF 120 Oscillator frequency as a function of R and test circuit is DD Fig ...
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... A: average, B: average + average which: ‘s’ is the observed standard deviation. Fig.10 Typical forward transconductance g January 1995 = constant (see also graph Fig.10 function of the supply voltage Product specification HEF4521B MSI = 25 C. amb ...
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... 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 supply voltage. 11 Product specification HEF4521B MSI ...