Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.COM

X  

HEF4521BT Datasheet (PDF) - Nexperia B.V. All rights reserved

HEF4521BT Datasheet PDF - Nexperia B.V. All rights reserved
Part # HEF4521BT
Download  HEF4521BT Download

File Size   266.46 Kbytes
Page   15 Pages
Manufacturer  NEXPERIA [Nexperia B.V. All rights reserved]
Direct Link  https://www.nexperia.com/
Logo NEXPERIA - Nexperia B.V. All rights reserved
Description 24-stage frequency divider and oscillator

HEF4521BT Datasheet (PDF)

Go To PDF Page Download Datasheet
HEF4521BT Datasheet PDF - Nexperia B.V. All rights reserved

Part # HEF4521BT
Download  HEF4521BT Click to download

File Size   266.46 Kbytes
Page   15 Pages
Manufacturer  NEXPERIA [Nexperia B.V. All rights reserved]
Direct Link  https://www.nexperia.com/
Logo NEXPERIA - Nexperia B.V. All rights reserved
Description 24-stage frequency divider and oscillator

HEF4521BT Datasheet (HTML) - Nexperia B.V. All rights reserved

Back Button HEF4521BT Datasheet HTML 1Page - Nexperia B.V. All rights reserved HEF4521BT Datasheet HTML 2Page - Nexperia B.V. All rights reserved HEF4521BT Datasheet HTML 3Page - Nexperia B.V. All rights reserved HEF4521BT Datasheet HTML 4Page - Nexperia B.V. All rights reserved HEF4521BT Datasheet HTML 5Page - Nexperia B.V. All rights reserved HEF4521BT Datasheet HTML 6Page - Nexperia B.V. All rights reserved HEF4521BT Datasheet HTML 7Page - Nexperia B.V. All rights reserved HEF4521BT Datasheet HTML 8Page - Nexperia B.V. All rights reserved HEF4521BT Datasheet HTML 9Page - Nexperia B.V. All rights reserved HEF4521BT Datasheet HTML 10Page - Nexperia B.V. All rights reserved Next Button 

HEF4521BT Product details

General 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 (A2 to Y2) functions as: a crystal oscillator, an input buffer for an external oscillator or in
combination with A1 as an RC oscillator. The crystal oscillator operates in Low-power mode when
pins VSS1 and VDD1 are supplied via external resistors.
Each flip-flop divides the frequency of the previous flip-flop by two, consequently the HEF4521B
counts up to 224 = 16777216. The counting advances on the HIGH-to-LOW transition of the
clock (A2). The outputs from each of the last seven stages (218 to 224) are available for additional
flexibility.
It operates over a recommended VDD power 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
• Wide supply voltage range from 3.0 V to 15.0 V
• CMOS low power dissipation
• High noise immunity
• Low power crystal oscillator operation
• Fully static operation
• 5 V, 10 V, and 15 V parametric ratings
• Standardized symmetrical output characteristics
• Complies with JEDEC standard JESD 13-B
• ESD protection:
• HBM JESD22-A114F exceeds 2000 V
• MM JESD22-A115-A exceeds 200 V
• Specified from -40 °C to +85 °C




Similar Part No. - HEF4521BT

ManufacturerPart #DatasheetDescription
logo
NXP Semiconductors
HEF4521BT PHILIPS-HEF4521BT Datasheet
159Kb / 11P
   24-stage frequency divider and oscillator
January 1995
HEF4521BT NXP-HEF4521BT Datasheet
114Kb / 17P
   24-stage frequency divider and oscillator
Rev. 05-5 November 2009
More results


Similar Description - HEF4521BT

ManufacturerPart #DatasheetDescription
logo
NXP Semiconductors
HEF4521B NXP-HEF4521B_09 Datasheet
114Kb / 17P
   24-stage frequency divider and oscillator
Rev. 05-5 November 2009
HEF4521B PHILIPS-HEF4521B Datasheet
159Kb / 11P
   24-stage frequency divider and oscillator
January 1995
logo
ON Semiconductor
MC14521B ONSEMI-MC14521B Datasheet
188Kb / 9P
   24-Stage Frequency Divider
September, 2009 ??Rev. 7
logo
STMicroelectronics
HCF4521B STMICROELECTRONICS-HCF4521B Datasheet
102Kb / 12P
   24 STAGE FREQUENCY DIVIDER
logo
Toshiba Semiconductor
TC4521BP TOSHIBA-TC4521BP_07 Datasheet
396Kb / 9P
   24-Stage Frequency Divider
logo
ON Semiconductor
MC14521B ONSEMI-MC14521B Datasheet
219Kb / 9P
   24-Stage Frequency Divider
September, 2009 ??Rev. 7
logo
Hitachi Semiconductor
HD14521B HITACHI-HD14521B Datasheet
97Kb / 6P
   24-Stage Frequency Divider
logo
Texas Instruments
CD4521BE TI-CD4521BE Datasheet
1Mb / 18P
[Old version datasheet]   CMOS 24-Stage Frequency Divider
CD4521B TI-CD4521B Datasheet
282Kb / 8P
[Old version datasheet]   CMOS 24-STAGE FREQUENCY DIVIDER
CD4521B TI-CD4521B_15 Datasheet
1Mb / 18P
[Old version datasheet]   CMOS 24-STAGE FREQUENCY DIVIDER
More results



Link URL



Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Link Exchange   |   Manufacturer List
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com