CD74HC670

更新时间： 2024-09-18 23:00:39

品牌	Logo	应用领域
德州仪器 - TI		/
页数	文件大小	规格书
9页	51K
描述
High-Speed CMOS Logic 4x4 Register File

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中文翻译

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数据手册

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CD74HC670 数据手册

CD74HC670,

CD74HCT670

Data sheet acquired from Harris Semiconductor

SCHS195

High-Speed CMOS Logic

4x4 Register File

January 1998

at V

= 5V

Features

• HCT Types

• Simultaneous and Independent Read and Write

Operations

- 4.5V to 5.5V Operation

[ /Title

(CD74H

C670,

- Direct LSTTL Input Logic Compatibility,

• Expandable to 512 Words of n-Bits

• Three-State Outputs

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

IL IH

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

OL OH

CD74H

CT670)

/Subject

(High-

Speed

CMOS

Logic

4x4 Reg-

ister

• Organized as 4 Words x 4 Bits Wide

• Buffered Inputs

Description

The Harris CD74HC670 and CD74HCT670 are 16-bit register

files organized as 4 words x 4 bits each. Read and write

address and enable inputs allow simultaneous writing into one

location while reading another. Four data inputs are provided

to store the 4-bit word. The write address inputs (WA0 and

WA1) determine the location of the stored word in the register.

When write enable (WE) is low the word is entered into the

• Typical Read Time = 16ns for CD74HC670 V

= 5V, C

= 15pF, T = 25 C

• Fanout (Over Temperature Range)

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

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

• Wide Operating Temperature Range . . . -55 C to 125 C address location and it remains transparent to the data. The

outputs will reflect the true form of the input data. When (WE)

is high data and address inputs are inhibited. Data acquisition

• Balanced Propagation Delay and Transition Times

from the four registers is made possible by the read address

inputs (RA1 and RA0). The addressed word appears at the

output when the read enable (RE) is low. The output is in the

high impedance state when the (RE) is high. Outputs can be

tied together to increase the word capacity to 512 x 4 bits.

• Signiﬁcant Power Reduction Compared to LSTTL

Logic ICs

• HC Types

- 2V to 6V Operation

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

IL IH CC

Ordering Information

Pinout

CD74HC670, CD74HCT670

(PDIP, SOIC)

TOP VIEW

16 V

15 D0

14 WA0

13 WA1

12 WE

11 RE

10 Q0

RA1

RA0

GND

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

File Number 1660.1

12 3 4 5 6 7...9

中文翻译

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与CD74HC670相关器件

型号	品牌	获取价格	描述	数据表
CD74HC670E	TAOS	获取价格	High-Speed CMOS Logic 4x4 Register File
CD74HC670E	TI	获取价格	High-Speed CMOS Logic 4x4 Register File
CD74HC670EE4	TI	获取价格	High-Speed CMOS Logic 4x4 Register File
CD74HC670EE4	TAOS	获取价格	High-Speed CMOS Logic 4x4 Register File
CD74HC670EX	RENESAS	获取价格	IC,REGISTER FILE,HC-CMOS,DIP,16PIN,PLASTIC
CD74HC670H	ETC	获取价格	Register File
CD74HC670M	TI	获取价格	High-Speed CMOS Logic 4x4 Register File
CD74HC670M	TAOS	获取价格	High-Speed CMOS Logic 4x4 Register File
CD74HC670M	RENESAS	获取价格	IC,REGISTER FILE,HC-CMOS,SOP,16PIN,PLASTIC
CD74HC670M96	TAOS	获取价格	High-Speed CMOS Logic 4x4 Register File

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