双极性晶体管

二极管

ESD保护、TVS、滤波和信号调节ESD保护

MOSFET

氮化镓场效应晶体管(GaN FET)

绝缘栅双极晶体管(IGBTs)

模拟和逻辑IC

汽车应用认证产品(AEC-Q100/Q101)

HEF4521BT

24-stage frequency divider and oscillator

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.

Alternatives

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: ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V

    • CDM: ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 V

  • Specified from -40 °C to +85 °C

参数类型

型号 VCC (V) Output drive capability (mA) Logic switching levels tpd (ns) Power dissipation considerations Tamb (°C) Package name
HEF4521BT 3.0 - 15 ± 2.4 CMOS 220 medium -40~85 SO16

PCB Symbol, Footprint and 3D Model

Model Name 描述

封装

型号 可订购的器件编号，（订购码(12NC)） 状态 标示 封装 外形图 回流焊/波峰焊 包装
HEF4521BT HEF4521BT,653
(933406770653)		 Active HEF4521BT SOT109-1
SO16
(SOT109-1) 		SOT109-1 SO-SOJ-REFLOW
SO-SOJ-WAVE
WAVE_BG-BD-1
暂无信息

下表中的所有产品型号均已停产 。

型号 可订购的器件编号，（订购码(12NC)） 状态 标示 封装 外形图 回流焊/波峰焊 包装
HEF4521BT HEF4521BT,652
(933406770652)		 Withdrawn / End-of-life HEF4521BT SOT109-1
SO16
(SOT109-1) 		SOT109-1 SO-SOJ-REFLOW
SO-SOJ-WAVE
WAVE_BG-BD-1
SOT109-1_652

环境信息

型号 可订购的器件编号 化学成分 RoHS RHF指示符
HEF4521BT HEF4521BT,653 HEF4521BT rohs rhf rhf

下表中的所有产品型号均已停产 。

型号 可订购的器件编号 化学成分 RoHS RHF指示符
HEF4521BT HEF4521BT,652 HEF4521BT rohs rhf rhf
品质及可靠性免责声明

Series

文档 (10)

文件名称 标题 类型 日期
HEF4521B 24-stage frequency divider and oscillator Data sheet 2024-08-19
AN11051 Pin FMEA HEF4000 family Application note 2019-01-09
SOT109-1 3D model for products with SOT109-1 package Design support 2020-01-22
Nexperia_package_poster Nexperia package poster Leaflet 2020-05-15
SO16_SOT109-1_mk plastic, small outline package; 16 leads; 1.27 mm pitch; 9.9 mm x 3.9 mm x 1.35 mm body Marcom graphics 2017-01-28
SOT109-1 plastic, small outline package; 16 leads; 1.27 mm pitch; 9.9 mm x 3.9 mm x 1.75 mm body Package information 2023-11-07
HEF4521BT_Nexperia_Product_Reliability HEF4521BT Nexperia Product Reliability Quality document 2024-06-16
SO-SOJ-REFLOW Footprint for reflow soldering Reflow soldering 2009-10-08
SO-SOJ-WAVE Footprint for wave soldering Wave soldering 2009-10-08
WAVE_BG-BD-1 Wave soldering profile Wave soldering 2021-09-08

支持

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模型

文件名称 标题 类型 日期
SOT109-1 3D model for products with SOT109-1 package Design support 2020-01-22

PCB Symbol, Footprint and 3D Model

Model Name 描述

订购、定价与供货

型号 Orderable part number Ordering code (12NC) 状态 包装 Packing Quantity 在线购买
HEF4521BT HEF4521BT,653 933406770653 Active 暂无信息 2,500 订单产品

样品

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如果您没有 Nexperia 的直接账户，我们的全球和地区分销商网络可为您提供 Nexperia 样品支持。查看官方经销商列表。

How does it work?

The interactive datasheets are based on the Nexperia MOSFET precision electrothermal models. With our interactive datasheets you can simply specify your own conditions interactively. Start by changing the values of the conditions. You can do this by using the sliders in the condition fields. By dragging the sliders you will see how the MOSFET will perform at the new conditions set.

交互式数据手册

可订购部件

型号 可订购的器件编号 订购代码(12NC) 封装 从经销商处购买
HEF4521BT HEF4521BT,653 933406770653 SOT109-1 订单产品