Datasheet > 逻辑 > 计数器> CD74HC4520

CD74HC4520

更新时间： 2024-11-05 22:40:03

品牌	Logo	应用领域
德州仪器 - TI		计数器
页数	文件大小	规格书
8页	47K
描述
High Speed CMOS Logic Dual Synchronous Counters

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数据手册
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CD74HC4520 数据手册

CD74HC4518, CD74HC4520,

CD74HCT4520

Data sheet acquired from Harris Semiconductor

SCHS216

High Speed CMOS Logic

Dual Synchronous Counters

November 1997

Features

Description

• Positive or Negative Edge Triggering

• Synchronous Internal Carry Propagation

• Fanout (Over Temperature Range)

The Harris CD74HC4518 is a dual BCD up-counter. The

Harris CD74HC4520 and CD74HCT4520 are dual binary

up-counters. Each device consists of two independent

internally synchronous 4-stage counters. The counter stages

are D-type ﬂip-ﬂops having interchangeable CLOCK and

[ /Title

(CD74

HC451

CD74

HC452

CD74

HCT45

20)

/Sub-

ject

- Standard Outputs. . . . . . . . . . . . . . . 10 LSTTL Loads

- Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads

ENABLE lines for incrementing on either the positive-going

or the negative-going transition of CLOCK. The counters are

• Wide Operating Temperature Range . . . -55 C to 125 C cleared by high levels on the MASTER RESET lines. The

counter can be cascaded in the ripple mode by connecting

• Balanced Propagation Delay and Transition Times

Q to the ENABLE input of the subsequent counter while the

CLOCK input of the latter is held low.

• Signiﬁcant Power Reduction Compared to LSTTL

Logic ICs

Ordering Information

• HC Types

- 2V to 6V Operation

PKG.

PART NUMBER TEMP. RANGE ( C) PACKAGE

NO.

E16.3

- High Noise Immunity: N = 30%, N = 30% of V

IL IH CC

at V

= 5V

CD74HC4518E

CD74HC4520E

CD74HCT4520E

CD74HC4520M

CD74HCT4520M

NOTES:

-55 to 125

16 Ld PDIP

• HCT Types

- 4.5V to 5.5V Operation

- Direct LSTTL Input Logic Compatibility,

V = 0.8V (Max), V = 2V (Min)

IL IH

16 Ld SOIC M16.15

- CMOS Input Compatibility, I ≤ 1µA at V , V

OL OH

1. When ordering, use the entire part number. Add the sufﬁx 96 to

obtain the variant in the tape and reel.

2. Wafer or die for this part number is available which meets all elec-

trical specifications. Please contact your local sales office or

Harris customer service for ordering information.

Pinout

CD74HC4518

CD74HC4520, CD74HCT4520

(PDIP, SOIC)

TOP VIEW

1CP

16 V

15 2MR

14 2Q

13 2Q

12 2Q

11 2Q

10 2E

1MR

GND

2CP

CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.

File Number 1665.1

12 3 4 5 6 7 8

中文翻译

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CD74HC4520 替代型号

型号	品牌	替代类型	描述	数据表
CD54HC4520	TI	功能相似	High-Speed CMOS Logic Dual Synchronous Counters

与CD74HC4520相关器件

型号	品牌	获取价格	描述	数据表
CD74HC4520E	TI	获取价格	High Speed CMOS Logic Dual Synchronous Counters
CD74HC4520EE4	TI	获取价格	High-Speed CMOS Logic Dual Synchronous Counters
CD74HC4520EN	ETC	获取价格	Logic IC
CD74HC4520EX	RENESAS	获取价格	IC,COUNTER,UP,4-BIT BINARY,HC-CMOS,DIP,16PIN,PLASTIC
CD74HC4520F	ETC	获取价格	Logic IC
CD74HC4520H	ETC	获取价格	Synchronous Up Counter
CD74HC4520M	TI	获取价格	High Speed CMOS Logic Dual Synchronous Counters
CD74HC4520M96	TI	获取价格	High-Speed CMOS Logic Dual Synchronous Counters
CD74HC4520M96E4	TI	获取价格	High-Speed CMOS Logic Dual Synchronous Counters
CD74HC4520M96G4	TI	获取价格	高速 CMOS 逻辑双路二进制加法计数器 \| D \| 16 \| -55 to 125

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