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SN74LS294 Status: ACTIVE

Programmable Frequency Divider / Digital Timer


      
         
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Datasheet

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 SN74LS294
Voltage Nodes(V)5  
Vcc range(V)4.75 to 5.25  
Input LevelTTL  
Output LevelTTL  
RatingCatalog  
Technology FamilyLS  
 Samples
 Inventory

Customers Who Evaluated This Product Also Evaluated

  • CD4521B: CMOS 24-Stage Frequency Divider
  • SN74LS292: Programmable Frequency Divider / Digital Timer
  • CD4536B: CMOS Programmable Timer
  • CD4018B: CMOS Presettable Divide-By-N Counter

Product Information

Features

  • Count Divider Chain
  • Digitally Programmable from 22 to 2n (n = 31 for 'LS292, n = 15 for 'LS294)
  • Useable Frequency Range from DC to 30 MHz
  • Easily Expandable
  • Applications
    • Frequency Division
    • Digital Timing

 

Description

These programmable frequency dividers/digital timers contain 31 flip-flops plus 30 gates ('LS292) or 15 flip-flops plus 29 gates ('LS294) on a single chip. The count modulo is under digital control of the inputs provided.

Both types feature an active-low clear input to initialize the state of all flip-flops. To facilitate incoming inspection, test points are provided (TP1, TP2, and TP3 on the 'LS292 and TP on the 'LS294). These test points are not intended to drive system loads. Both types feature two clock inputs; either one may be used for clock gating. (See the function table below.)

A brief look at the digital timing capabilities of the 'LS292 will show that with a 1-MHz input frequency, programming for 210 will give a period of 1.

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Pricing / Packaging / CAD Design Tools / Samples

PricePackagingCAD Design ToolsSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierFootprintsSamples
SN74LS294NACTIVE0 to 7020.94 | 1kuPDIP (N) | 16 View 25 | TUBE Download CAD Format for this FootprintPurchase Samples
SN74LS294NE4ACTIVE0 to 7020.94 | 1kuPDIP (N) | 16 View 25 | TUBE Download CAD Format for this FootprintPurchase Samples

* Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For higher volume price quotes,prices in local currency or delivery quotes, please contact your local Texas Instruments Sales Office or Authorized Distributor.

Inventory

Reported Distributor Inventory as of 10:58 AM GMT, 22 Nov 2009
RegionCompanyIn StockPurchase
TI Lead Time*: 14 WeeksSN74LS294N
AmericasArrow 23
Newark 39
Rochester Electronics >1k
AsiaFarnell Asia 25
EuropeAvnet-SILICA 40
Farnell 25
WorldwideMouser Electronics 37
TI Lead Time*: 14 WeeksSN74LS294NE4
None Reported
View Distributors
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** Lead time information is not available at this time. However, our information is updated daily so please check back with us soon. Please contact your preferred TI Authorized Distributor for additional information.

Quality & Lead (Pb)-Free Data

 Product ContentDPPM / MTBF / FIT Rate
DeviceEco Plan* Lead / Ball FinishMSL Rating / Peak ReflowDetailsDetails
SN74LS294N RoHS Compliant Pb-Free (RoHS) CU NIPDAU N/A for Pkg TypeViewView
SN74LS294NE4 RoHS Compliant Pb-Free (RoHS) CU NIPDAU N/A for Pkg TypeViewView

* The planned eco-friendly classification: Pb-Free (RoHS) or Pb-Free (RoHS Exempt) or Green (RoHS & no Sb/Br) - please click on the Product Content Details "View" link in the table above for the latest availability information and additional product content details.

If the information you are requesting is not available online at this time, contact one of our Product Information Centers regarding the availability of this information.

Technical Documents

Most useful technical documents for SN74LS294 Help

Datasheet

Application Notes

View Application Notes for Rate Multipliers/Frequency Dividers/Timers

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Customers Who Evaluated This Product Also Evaluated...
Part # Name Product Family Comments
CD4521B CMOS 24-Stage Frequency Divider SPECIALTY LOGIC-RATE MULTIPLIERS/FREQUENCY DIVIDERS/TIMERS TI customers also evaluated this product.
SN74LS292 Programmable Frequency Divider / Digital Timer SPECIALTY LOGIC-RATE MULTIPLIERS/FREQUENCY DIVIDERS/TIMERS TI customers also evaluated this product.
CD4536B CMOS Programmable Timer SPECIALTY LOGIC-RATE MULTIPLIERS/FREQUENCY DIVIDERS/TIMERS TI customers also evaluated this product.
CD4018B CMOS Presettable Divide-By-N Counter COUNTERS-BINARY COUNTERS TI customers also evaluated this product.

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