Datasheet > CD74HCT423

CD74HCT423

更新时间： 2024-02-20 15:32:22

品牌	Logo	应用领域
哈里斯 - HARRIS		触发器
页数	文件大小	规格书
7页	37K
描述
High Speed CMOS Logic Dual Retriggerable Monostable Multivibrators with Resets

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CD74HCT423 数据手册

CD74HC123, CD74HCT123,

CD74HC423, CD74HCT423

S E M I C O N D U C T O R

High Speed CMOS Logic Dual Retriggerable

Monostable Multivibrators with Resets

September 1997

Features

Description

• Overriding Reset Terminates Output Pulse

• Triggering From the Leading or Trailing Edge

• Q and Q Buffered Outputs

The Harris CD74HC123, CD74HCT123, CD74HC423 and

CD74HCT423 are dual monostable multivibrators with

resets. They are all retriggerable and differ only in that the

123 types can be triggered by a negative to positive reset

pulse; whereas the 423 types do not have this feature. An

• Separate Resets

external resistor (R ) and an external capacitor (C ) control

the timing and the accuracy for the circuit. Adjustment of Rx

• Wide Range of Output-Pulse Widths

• Schmitt Trigger on Both A and B Inputs

and C provides a wide range of output pulse widths from

the Q and Q terminals. Pulse triggering on the A and B

inputs occur at a particular voltage level and is not related to

the rise and fall times of the trigger pulses.

• Fanout (Over Temperature Range)

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

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

Once triggered, the output pulse width may be extended by

retriggering inputs A and B. The output pulse can be

terminated by a LOW level on the Reset (R) pin. Trailing

edge triggering (A) and leading edge triggering (B) inputs

are provided for triggering from either edge of the input

pulse. If either Mono is not used each input on the unused

device (A, B, and R) must be terminated high or low.

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

• Balanced Propagation Delay and Transition Times

• Signiﬁcant Power Reduction Compared to LSTTL

Logic ICs

• HC Types

The minimum value of external resistance, Rx is typically 5kΩ.

- 2V to 6V Operation

The minimum value external capacitance, C , is 0pF. The

calculation for the pulse width is t = 0.45 R C at V

= 5V.

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

IL IH CC

X X CC

= 5V

Ordering Information

• HCT Types

- 4.5V to 5.5V Operation

PKG.

NO.

PART NUMBER TEMP. RANGE ( C) PACKAGE

- Direct LSTTL Input Logic Compatibility,

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

IL IH

CD74HC123E

CD74HCT123E

CD74HC423E

CD74HCT423E

CD74HC123M

CD74HCT123M

CD74HC423M

CD74HCT423M

NOTES:

-55 to 125

16 Ld PDIP

E16.3

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

OL OH

Pinout

CD74HC123, CD74HCT123, CD74HC423, CD74HCT423

(PDIP, SOIC)

TOP VIEW

16 Ld SOIC M16.15

16 V

15 1R C

14 1C

13 1Q

12 2Q

11 2R

10 2B

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

obtain the variant in the tape and reel.

2R C

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.

GND

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

File Number 1708.1

12 3 4 5 6 7

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与CD74HCT423相关器件

型号	品牌	获取价格	描述	数据表
CD74HCT423E	TI	获取价格	High Speed CMOS Logic Dual Retriggerable Monostable Multivibrators with Resets
CD74HCT423E	HARRIS	获取价格	High Speed CMOS Logic Dual Retriggerable Monostable Multivibrators with Resets
CD74HCT423EE4	TI	获取价格	High-Speed CMOS Logic Dual Retriggerable Monostable Multivibrators with Resets
CD74HCT423EN	ETC	获取价格	Logic IC
CD74HCT423EX	RENESAS	获取价格	IC,MONOSTABLE MULTIVIBRATOR,HCT-CMOS,DIP,16PIN,PLASTIC
CD74HCT423F	ETC	获取价格	Logic IC
CD74HCT423H	RENESAS	获取价格	HCT SERIES, DUAL MONOSTABLE MULTIVIBRATOR, UUC16
CD74HCT423M	TI	获取价格	High Speed CMOS Logic Dual Retriggerable Monostable Multivibrators with Resets
CD74HCT423M	HARRIS	获取价格	High Speed CMOS Logic Dual Retriggerable Monostable Multivibrators with Resets
CD74HCT423M96	TI	获取价格	High-Speed CMOS Logic Dual Retriggerable Monostable Multivibrators with Resets

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