74HCT4538PW

Dual retriggerable precision monostable multivibrator


Quick ordering

DistributorIn Stock
OR:  

The 74HC4538; 74HCT4538 are high-speed Si-gate CMOS devices and are pin compatible with Low-power Schottky TTL (LSTTL). They are specified in compliance with JEDEC standard no. 7A.

The 74HC4538; 74HCT4538 are dual retriggerable-resettable monostable multivibrators. Each multivibrator has an active LOW trigger/retrigger input (nA), an active HIGH trigger/retrigger input (nB), an overriding active LOW direct reset input (nCD), an output (nQ) and its complement (nQ), and two pins (nREXT/CEXT and nCEXT) for connecting the external timing components CEXT and REXT. Typical pulse width variation over the specified temperature range is ±0.2 %.

The multivibrator may be triggered by either the positive or the negative edges of the input pulse. The duration and accuracy of the output pulse are determined by the external timing components CEXT and REXT. The output pulse width (tW) is equal to 0.7 × REXT × CEXT. The linear design techniques guarantee precise control of the output pulse width. A LOW level at nCD terminates the output pulse immediately. Schmitt trigger action on pins nA and nB makes the circuit highly tolerant of slower rise and fall times.

Features and benefits

  • Tolerant of slow trigger rise and fall times
  • Separate reset inputs
  • Triggering from falling or rising edge
  • Multiple package options
  • ESD protection:
    • HBM JESD22-A114E exceeds 2000 V
    • MM JESD22-A115-A exceeds 200 V
  • Specified from -40 °C to +85 °C and from -40 °C to +125 °C
All information on this product information page is subject to the subsequent disclaimers:
Go to the parametric search
Parametric search

Show functional diagram

Block diagram: 74HC4538D, 74HC4538DB, 74HC4538N, 74HC4538PW, 74HC4538U, 74HCT4538D, 74HCT4538DB, 74HCT4538N, 74HCT4538PW
Block diagram: 74HC4538D, 74HC4538DB, 74HC4538N, 74HC4538PW, 74HC4538U, 74HCT4538D, 74HCT4538DB, 74HCT4538N, 74HCT4538PW

Parametrics of this product

Type numberPackageNr of pinsPackage nameProduct statustpd(ns)VCC(V)FamilyPower dissipation considerationsLogic switching levelsOutput drive capability(mA)DescriptionTamb(Cel)
74HCT4538PWSOT403-1
(TSSOP16)		16TSSOP16Production304.5 - 5.5HC(T)lowTTL+/- 4dual retriggerable precision monostable multivibrator; TTL enabled-40~125

Package

Type numberOrderable part numberOrdering code (12NC)Product statusPackagePackingMarking
74HCT4538PW74HCT4538PW,1129351 891 40112Volume productionSOT403-1
(TSSOP16) 		TubeHCT4538
74HCT4538PW74HCT4538PW,1189351 891 40118Volume productionSOT403-1
(TSSOP16) 		Reel Pack, SMD, 13"HCT4538

Outline drawing

Package VersionPackage NamePackage DescriptionReference CodesIssue Date
SOT403-1TSSOP16plastic thin shrink small outline package; 16 leads; body width 4.4 mmMO-153 (JEDEC); 2003-02-18

Related documents

Reflow soldering

Wave soldering

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHSLeadfree conversion dateRHFIFR (FIT)MTBF (hours)MSLMSL LF
74HCT4538PW74HCT4538PW,11274HCT4538PWweek 10, 20056.621.5105740181268883E811
74HCT4538PW74HCT4538PW,11874HCT4538PWweek 10, 20056.621.5105740181268883E811
Quality and reliability disclaimer

Quality and reliability disclaimer

Important Legal Notice on the product/generic quality information, No Warranty

NXP Semiconductors is providing this data for your convenience only. Please note however that NO WARRANTY, REPRESENTATION, GUARANTEE OR LEGALLY BINDING PRODUCT DESCRIPTION is provided by publishing this informational data, nor does NXP Semiconductors acknowledge or accept any liability related thereto. The documentation and data on NXP Semiconductors products can be found in the data sheets as officially published by NXP Semiconductors. For all purchase of products from NXP Semiconductors the NXP Semiconductors' General Terms and Conditions of Commercial Sale will apply.

NXP SEMICONDUCTORS PROVIDES THE DATA HEREUNDER “AS IS” WITHOUT WARRANTY WHATSOEVER. NXP SEMICONDUCTORS DOES NOT WARRANT OR REPRESENT THAT ANY DATA PROVIDED ON THIS WEBSITE IS CORRECT OR FIT FOR A PARTICULAR PURPOSE WHATSOEVER. IT IS PROVIDED WITHOUT ANY WARRANTY WHATSOEVER, WHETHER EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY, COMPLETENESS NONINFRINGEMENT OF INTELLECTUAL PROPERTY OR OTHERWISE AND MAY BE CHANGED, MODIFIED OR DELETED BY NXP SEMICONDUCTORS AT ANY TIME.

Any use of the data provided hereunder is at your own risk.

IN NO EVENT SHALL NXP SEMICONDUCTORS, BE LIABLE FOR ANY DIRECT, SPECIAL, INDIRECT, CONSEQUENTIAL, PUNITIVE, OR INCIDENTAL DAMAGES (INCLUDING WITHOUT LIMITATION DAMAGES FOR LOSS OF BUSINESS, BUSINESS INTERRUPTION, LOSS OF USE, LOSS OF DATA OR INFORMATION, AND THE LIKE) ARISING OUT OF THE USE OF THE DATA, WHETHER OR NOT BASED ON TORT (INCLUDING NEGLIGENCE), STRICT LIABILITY, BREACH OF CONTRACT, BREACH OF WARRANTY OR ANY OTHER THEORY, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. NOTWITHSTANDING ANY DAMAGES THAT YOU MIGHT INCUR FOR ANY REASON WHATSOEVER (INCLUDING, WITHOUT LIMITATION, ALL DAMAGES REFERENCED ABOVE AND ALL GENERAL DAMAGES), THE ENTIRE LIABILITY OF NXP SEMICONDUCTORS, AND YOUR EXCLUSIVE REMEDY FOR ALL OF THE FOREGOING SHALL BE LIMITED TO ACTUAL DAMAGES INCURRED BY YOU BASED ON REASONABLE RELIANCE UP TO ONE DOLLARS (US$1.00). THE FOREGOING LIMITATIONS, EXCLUSIONS AND DISCLAIMERS SHALL APPLY TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, EVEN IF ANY REMEDY FAILS OF ITS ESSENTIAL PURPOSE.

Your use of this data, and all consequences of such use, is solely your responsibility. You must perform sufficient engineering and additional qualification testing in order to properly evaluate your application and determine whether a candidate NXP Semiconductors device is suitable for use in that application.

NXP Semiconductors' products are specifically designed and manufactured to be used within the electrical, thermal, mechanical and other parameters set forth in NXP Semiconductors' data sheets. Quality and reliability data provided by NXP Semiconductors, such as MTBF, MSL and FIT, is intended to be a non-binding estimate of product performance based upon diffusion process, history only. It does not imply that any performance levels reflected in such data can be met if the product is operated outside the conditions expressly stated in the latest published data sheet for a device or in your application.

The RoHS data provided hereunder is preliminary and non binding for NXP Semiconductors. NXP Semiconductors does not accept any liability related to this data.

NXP Semiconductors products are not designed, authorized or warranted to be suitable for use in medical, military, aircraft, space or life support equipment, nor in applications where failure or malfunction of an NXP Semiconductors product can reasonably be expected to result in personal injury, death or severe property or environmental damage nor for any other use that is not explicitly agreed between the parties. NXP Semiconductors accepts no liability for inclusion and/or use of NXP Semiconductors products in such equipment or applications and therefore such inclusion and/or use is at the customer's own risk.

Any use of NXP Semiconductors' products beyond the scope defined in the current NXP Semiconductors' data sheet voids all warranty responsibility of NXP Semiconductors with respect to such devices, and also voids all responsibility of NXP Semiconductors with respect to any applications assistance, product design, software performance or services of any kind that were or may have been performed in connection with the sale of any such devices.

Further, resale of NXP Semiconductors' products or services with statements different from or beyond the parameters stated by NXP Semiconductors for that product in official NXP Semiconductors data sheets, or without the warnings or instructions provided by NXP Semiconductors, voids all express and any implied warranties for the associated NXP Semiconductors product or service, and is an unfair and deceptive business practice.

Documentation for this product

File nameTitleTypeFormatDate
74HC_HCT4538Dual retriggerable precision monostable multivibratorData sheetpdf2012-06-08
AN11044Pin FMEA 74HC/74HCT familyApplication notepdf2011-03-16
AN252Live Insertion Aspects of Philips Logic FamiliesApplication notepdf2013-03-13
hchc Spice modelSPICE modelzip2013-05-07
HCT_USER_GUIDEHC/T User GuideUser manualpdf1997-11-01

Ordering & availability

Type numberOrdering code (12NC)Orderable part numberRegionDistributorIn stockOrder quantityInventory dateBuy onlineSamples
74HCT4538PW9351 891 4011274HCT4538PW,112NAAVNET EXPRESS AMERICAS2,4006/16/2013Buy onlinenot available
   NADIGI-KEY CORPORATION1,3866/15/2013Buy online 
74HCT4538PW9351 891 4011874HCT4538PW,118ASIASACL - Hong Kong/Chinayes250006/01/2013Buy onlinenot available

Sample

Sample orders normally take 2-4 days for delivery.
If you do not have a direct account with NXP our network of global and regional distributors is available and equipped to support you with NXP samples. As a NXP customer you also have the option to order samples via our sales organisation.

Technical support

Do you want to ask technical questions to an NXP expert?
Please select one of the following options:

Models

SPICE model

How to search?

Already registered to MyNXP? or Register

Feedback

Restricted Document

You are accessing a password protected document.
Please choose an option below

Fill in your name, company and e-mail address and you will receive an e-mail with a username and password for this restricted document.

First name*

Last name*

Company*

E-mail*

Comments

* required.

Print password request form:

Before we can grant you access to our confidential documents you are required to fill in, print and sign the password request form by which you comply with the NXP Non-disclosure agreement (NDA). Please email or fax the signed form to the email-address or fax-number specified on the form. After approval you will receive username and password via email. In case you already signed an NDA with NXP and already have username and password, you can skip this step.

Open document:

If you have received the username and password, you can open the document by clicking on the "open document" link. You will be prompted for username and password. After you fill in the username and password the download will start.

Forgot your password:

In case you forgot your password you can click on the "forgot your password" link to retrieve your password. Please complete the small form with your personal details and your request will be sent to NXP. You will receive an answer with your password shortly.

Request secure documentation

Fill in your name, company and e-mail address and you will receive an e-mail with a username and password for this secure document.

First name*

Last name*

Company*

E-mail*

Comments

* required.

Datasheet confidential

Fill in your details and you will be contacted

First name*

Last name*

Company*

Country*

Telephone number*

E-mail*

* required.

Your e-mail address will only be used to send the datasheet and will not be used for any other purposes.

No full datasheet available

Fill in your details to receive notification when the datasheet becomes available

First name*

Last name*

Company*

E-mail*

* required.

Your email address will only be used to send the datasheet and will not be used for any other purposes.