Datasheet > CD74HC4538-Q1

CD74HC4538-Q1

更新时间： 2024-11-27 12:42:59

品牌	Logo	应用领域
德州仪器 - TI		振荡器
页数	文件大小	规格书
16页	341K
描述
HIGH-SPEED CMOS LOGIC DUAL RETRIGGERABLE PRECISION MONOSTABLE MULTIVIBRATOR

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CD74HC4538-Q1 数据手册

CD74HC4538-Q1

HIGH-SPEED CMOS LOGIC DUAL RETRIGGERABLE

PRECISION MONOSTABLE MULTIVIBRATOR

SCLS595A − NOVEMBER 2004 − REVISED APRIL 2008

Qualified for Automotive Applications

Retriggerable/Resettable Capability

Trigger and Reset Propagation Delays

Balanced Propagation Delay and Transition

Times

Significant Power Reduction Compared to

LSTTL Logic ICs

Independent of R , C

Voltage = 2 V to 6 V

Triggering From the Leading or Trailing

Edge

High Noise Immunity N or N = 30% of

, V = 5 V

Q and Q Buffered Outputs Available

Separate Resets

M OR PW PACKAGE

(TOP VIEW)

Wide Range of Output Pulse Widths

Schmitt-Trigger Input on A and B Inputs

1C_X

1R_XC_X

V_CC

Retrigger Time Is Independent of C

2C_X

2R_XC_X

Fanout (Over Temperature Range)

− Standard Outputs . . . 10 LSTTL Loads

− Bus Driver Outputs . . . 15 LSTTL Loads

description/ordering information

10 2Q

GND

The CD74HC4538 is a dual retriggerable/resettable

precision monostable multivibrator for fixed-voltage

timing applications. An external resistor (R ) and

external capacitor (C ) control the timing and accuracy for the circuit. Adjustment of R and C provides a wide

range of output pulse widths from the Q and Q terminals. The propagation delay from trigger input-to-output

transition and the propagation delay from reset input-to-output transition are independent of R and C .

Leading-edge triggering (A) and trailing-edge triggering (B) inputs are provided for triggering from either edge

of the input pulse. An unused A input should be tied to GND and an unused B input should be tied to V . On

power up, the IC is reset. Unused resets and sections must be terminated. In normal operation, the circuit

retriggers on the application of each new trigger pulse. To operate in the nontriggerable mode, Q is connected

to B when leading-edge triggering (A) is used, or Q is connected to A when trailing-edge triggering (B) is used.

The period (τ) can be calculated from τ = (0.7) R , C ; R

is 5 kΩ. C

is 0 pF.

MIN

{

ORDERING INFORMATION

ORDERABLE

PART NUMBER

TOP-SIDE

‡

PACKAGE

MARKING

HC4538M

SOIC − M

Tape and reel

CD74HC4538QM96Q1

CD74HC4538QPWRQ1

−40°C to 125°C

TSSOP − PW Tape and reel

†

‡

For the most current package and ordering information, see the Package Option Addendum at the

end of this document, or see the TI web site at http://www.ti.com.

Package drawings, thermal data, and symbolization are available at http://www.ti.com/packaging.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

12 3 4 5 6 7...16

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CD74HC4538-Q1 替代型号

型号	品牌	替代类型	描述	数据表
CD74HC4538	TI	功能相似	High Speed CMOS Logic Dual Retriggerable Precision Monostable Multivibrator
CD54HC4538	TI	功能相似	High Speed CMOS Logic Dual Retriggerable Precision Monostable Multivibrator

与CD74HC4538-Q1相关器件

型号	品牌	获取价格	描述	数据表
CD74HC4538QM96G4Q1	TI	获取价格	HIGH-SPEED CMOS LOGIC DUAL RETRIGGERABLE PRECISION MONOSTABLE MULTIVIBRATOR
CD74HC4538QM96Q1	TI	获取价格	HIGH-SPEED CMOS LOGIC DUAL RETRIGGERABLE PRECISION MONOSTABLE MULTIVIBRATOR
CD74HC4538QPWRG4Q1	TI	获取价格	HIGH-SPEED CMOS LOGIC DUAL RETRIGGERABLE PRECISION MONOSTABLE MULTIVIBRATOR
CD74HC4538QPWRQ1	TI	获取价格	HIGH-SPEED CMOS LOGIC DUAL RETRIGGERABLE PRECISION MONOSTABLE MULTIVIBRATOR
CD74HC4543	TI	获取价格	HIGH-SPEED CMOS LOGIC(BCD-TO7 SEGMENT LATCH/DECODER/DRIVER FOR LCDS)
CD74HC4543E	TI	获取价格	High-Speed CMOS Logic BCD to 7-Segment Latch/Decoder/Driver for LCDs
CD74HC4543EE4	TI	获取价格	High-Speed CMOS Logic BCD to 7-Segment Latch/Decoder/Driver for LCDs
CD74HC4543EN	ETC	获取价格	Logic IC
CD74HC4543EX	RENESAS	获取价格	CD74HC4543EX
CD74HC4543F	ETC	获取价格	Logic IC

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