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TLC551 Status: ACTIVE

LinCMOS(TM) Timer


      
         
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Datasheet

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 TLC551
Frequency(Max)(MHz)1.8  
VCC(Min)(V)1  
VCC(Max)(V)15  
Pin/Package8PDIP, 8SOIC  
 Samples
 Inventory

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Product Information

Features

  • Very Low Power Consumption
    1 mW Typ at VDD = 5 V
  • Capable of Operation in Astable Mode
  • CMOS Output Capable of Swinging Rail
    to Rail
  • High Output-Current Capability
    Sink 100 mA Typ
    Source 10 mA Typ
  • Output Fully Compatible With CMOS, TTL, and MOS
  • Low Supply Current Reduces Spikes During Output Transitions
  • Single-Supply Operation From 1 V to 15 V
  • Functionally Interchangeable With the NE555; Has Same Pinout
  • ESD Protection Exceeds 2000 V Per MIL-STD-883C, Method 3015.2

Description

The TLC551 is a monolithic timing circuit fabricated using the TI LinCMOSTM

process. The

timer is fully compatible with CMOS, TTL, and MOS logic and operates at frequencies up to 2 MHz. Compared to the NE555 timer, this device uses smaller timing capacitors because of its high input impedance. As a result, more accurate time delays and oscillations are possible. Power consumption is low across the full range of power supply voltage.

Like the NE555, the TLC551 has a trigger level equal to approximately one-third of the supply voltage and a threshold level equal to approximately two-thirds of the supply voltage. These levels can be altered by use of the control voltage terminal (CONT). When the trigger input (TRIG) falls below the trigger level, the flip-flop is set and the output goes high. If TRIG is above the trigger level and the threshold input (THRES) is above the threshold level, the flip-flop is reset and the output is low. The reset input (RESET) can override all other inputs and can be used to initiate a new timing cycle. If RESET is low, the flip-flop is reset and the output is low. Whenever the output is low, a low-impedance path is provided between DISCH and GND. All unused inputs should be tied to an appropriate logic level to prevent false triggering.

While the CMOS output is capable of sinking over 100 mA and sourcing over 10 mA, the TLC551 exhibits greatly reduced supply-current spikes during output transitions. This minimizes the need for the large decoupling capacitors required by the NE555.

The TLC551C is characterized for operation from 0°C to 7

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingCAD Design ToolsSamples
DeviceStatusPrice | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierSymbolsFootprintsSamples
TLC551CDACTIVE0.55 | 1kuSOIC (D) | 8 View 75 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
TLC551CDG4ACTIVE0.55 | 1kuSOIC (D) | 8 View 75 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
TLC551CPACTIVE0.55 | 1kuPDIP (P) | 8 View 50 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
TLC551CPE4ACTIVE0.55 | 1kuPDIP (P) | 8 View 50 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint

* 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 10:30 AM GMT, 08 Nov 2009
RegionCompanyIn StockPurchase
TI Lead Time*: 8 WeeksTLC551CD
AmericasArrow 475
Avnet 225
Newark >1k
Rochester Electronics >1k
WorldwideDigiKey 555
TI Lead Time*: 8 WeeksTLC551CDG4
WorldwideDigiKey  Available
Mouser Electronics 898
TI Lead Time*: 20 WeeksTLC551CP
AmericasAvnet 500
Newark 213
Rochester Electronics >1k
AsiaFarnell Asia 567
EuropeFarnell 478
WorldwideDigiKey 131
Mouser Electronics 32
TI Lead Time*: 20 WeeksTLC551CPE4
WorldwideDigiKey  Available
View all Distributors  

** 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
TLC551CD RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
TLC551CDG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
TLC551CP RoHS Compliant Pb-Free (RoHS) CU NIPDAU N/A for Pkg TypeViewView
TLC551CPE4 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.

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