Datasheet > CD74HC390_08

CD74HC390_08

更新时间： 2024-11-02 05:09:07

品牌	Logo	应用领域
德州仪器 - TI		计数器
页数	文件大小	规格书
15页	453K
描述
High-Speed CMOS Logic Dual Decade Ripple Counter

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CD74HC390_08 数据手册

CD74HC390,

CD54HCT390, CD74HCT390

Data sheet acquired from Harris Semiconductor

SCHS185C

High-Speed CMOS Logic

September 1997 - Revised October 2003

Dual Decade Ripple Counter

Features

Description

• Two BCD Decade or Bi-Quinary Counters

The CD74HC390 and ’HCT390 dual 4-bit decade ripple

counters are high-speed silicon-gate CMOS devices and are

pin compatible with low-power Schottky TTL (LSTTL). These

devices are divided into four separately clocked sections.

The counters have two divide-by-2 sections and two divide-

by-5 sections. These sections are normally used in a BCD

decade or bi-quinary conﬁguration, since they share a com-

mon master reset (nMR). If the two master reset inputs (1MR

and 2MR) are used to simultaneously clear all 8 bits of the

counter, a number of counting conﬁgurations are possible

within one package. The separate clock inputs (nCP0 and

nCP1) of each section allow ripple counter or frequency divi-

sion applications of divide-by-2, 4. 5, 10, 20, 25, 50 or 100.

Each section is triggered by the High-to-Low transition of the

input pulses (nCP0 and nCP1).

• One Package Can Be Conﬁgured to Divide-by-2, 4,

5,10, 20, 25, 50 or 100

[ /Title

(CD74

HC390

CD74

HCT39

/Sub-

ject

(High

Speed

CMOS

• Two Master Reset Inputs to Clear Each Decade

Counter Individually

• Fanout (Over Temperature Range)

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

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

• Wide Operating Temperature Range . . . -55 C to 125 C

• Balanced Propagation Delay and Transition Times

• Signiﬁcant Power Reduction Compared to LSTTL

Logic ICs

For BCD decade operation, the nQ0 output is connected to

the nCP1 input of the divide-by-5 section. For bi-quinary

decade operation, the nO3 output is connected to the nCP0

• HC Types

- 2V to 6V Operation

input and nQ becomes the decade output.

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

IL IH CC

at V

= 5V

The master reset inputs (1MR and 2MR) are active-High

asynchronous inputs to each decade counter which oper-

ates on the portion of the counter identiﬁed by the “1” and “2”

preﬁxes in the pin conﬁguration. A High level on the nMR

input overrides the clock and sets the four outputs Low.

• HCT Types

- 4.5V to 5.5V Operation

- Direct LSTTL Input Logic Compatibility,

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

IL IH

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

Ordering Information

OL OH

TEMP. RANGE

PART NUMBER

CD54HCT390F3A

CD74HC390E

( C)

PACKAGE

16 Ld CERDIP

16 Ld PDIP

16 Ld SOIC

16 Ld PDIP

16 Ld SOIC

Pinout

-55 to 125

CD54HCT390

(CERDIP)

CD74HC390, CD74HCT390

(PDIP, SOIC)

CD74HC390M

TOP VIEW

CD74HC390MT

CD74HC390M96

CD74HCT390E

CD74HCT390M

CD74HCT390MT

CD74HCT390M96

1CP0

1MR

16 V

15 2CP0

14 2MR

13 2Q0

1CP1

12 2CP1

11 2Q

10 2Q

GND

NOTE: When ordering, use the entire part number. The sufﬁx 96

denotes tape and reel. The sufﬁx T denotes a small-quantity reel

of 250.

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

12 3 4 5 6 7...15

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与CD74HC390_08相关器件

型号	品牌	获取价格	描述	数据表
CD74HC390E	ROCHESTER	获取价格	Decade Counter, HC/UH Series, Asynchronous, Negative Edge Triggered, 3-Bit, Up Direction,
CD74HC390E	TI	获取价格	High Speed CMOS Logic Dual Decade Ripple Counter
CD74HC390EE4	TI	获取价格	High-Speed CMOS Logic Dual Decade Ripple Counter
CD74HC390EN	ETC	获取价格	Logic IC
CD74HC390EX	RENESAS	获取价格	IC,COUNTER,UP,BI-QUINARY,HC-CMOS,DIP,16PIN,PLASTIC
CD74HC390F	ETC	获取价格	Logic IC
CD74HC390H	ETC	获取价格	Asynchronous Up Counter
CD74HC390M	ROCHESTER	获取价格	Decade Counter, HC/UH Series, Asynchronous, Negative Edge Triggered, 3-Bit, Up Direction,
CD74HC390M	TI	获取价格	High Speed CMOS Logic Dual Decade Ripple Counter
CD74HC390M96	TI	获取价格	High-Speed CMOS Logic Dual Decade Ripple Counter

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