Datasheet > HEF4521BT-Q100

HEF4521BT-Q100

更新时间： 2024-09-30 17:01:35

品牌	Logo	应用领域
安世 - NEXPERIA		/
页数	文件大小	规格书
15页	308K
描述
24-stage frequency divider and oscillatorProduction

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HEF4521BT-Q100 数据手册

HEF4521B-Q100

24-stage frequency divider and oscillator

Rev. 1 — 19 October 2023

Product data sheet

1. General description

The HEF4521B-Q100 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 V_SS1and V_DD1are supplied via external resistors.

Each flip-flop divides the frequency of the previous flip-flop by two, consequently the

HEF4521B-Q100 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 (2¹⁸to 2²⁴) are

available for additional flexibility.

It operates over a recommended V_DDpower supply range of 3 V to 15 V referenced to V_SS(usually

ground). Unused inputs must be connected to V_DD, V_SS, or another input.

This product has been qualified to the Automotive Electronics Council (AEC) standard Q100

(Grade 3) and is suitable for use in automotive applications.

2. Features and benefits

•

Automotive product qualification in accordance with AEC-Q100 (Grade 3)

Specified from -40 °C to +85 °C

•

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

3. Ordering information

Table 1. Ordering information

Type number

Package

Temperature range Name

Description

Version

HEF4521BT-Q100

-40 °C to +85 °C

SO16

plastic small outline package; 16 leads;

body width 3.9 mm

SOT109-1

12 3 4 5 6 7...15

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