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TLC556 Status: ACTIVE

Dual LinCMOS(TM) Timer


      
         
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Datasheet

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 TLC556
Frequency(Max)(MHz)2.1  
VCC(Min)(V)2  
VCC(Max)(V)15  
Pin/Package14PDIP, 14SOIC  
Operating Temp Range(Celsius)0 to 70  
 Samples
 Inventory

Other qualified versions of TLC556

Version Part Number Definition
Military TLC556M QML certified for Military and Defense Applications

Customers Who Evaluated This Product Also Evaluated

  • SE555: Precision Timer
  • TLC555: Low Power Timer
  • LM337: 3 Pin 1.5A Adjustable Negative Voltage Regulator

Product Information

Features

  • Very Low Power Consumption...2 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 2 V to 15 V
  • Functionally interchangeable With the NE556; Has Same Pinout

LinCMOS is a trademark of Texas Instruments Incorporated.

Description

The TLC556 series are monolithic timing circuits fabricated using the TI LinCMOSTM process, which provides full compatibility with CMOS, TTL, and MOS logic and operates at frequencies up to 2MHz. Accurate time delays and oscillations are possible with smaller, less-expensive timing capacitors than the NE556 because of the high input impedance. Power consumption is low across the full range of power supply voltages.

Like the NE556, the TLC556 has a trigger level approximately one-third of the supply voltage and

a threshold level approximately two-thirds of the supply voltage. These levels can be altered by use of the control voltage terminal. When the trigger input falls below the trigger level, the flip-flop is set and the output goes high. If the trigger input is above the trigger level and the threshold input is above the threshold level, the flip-flop is reset and the output is low. The reset input can override all other inputs and can be used to initiate a new timing cycle. If the reset input is low, the flip-flop is reset and the output is low. Whenever the output is low, a low-impedance path is provided between the discharge terminal and ground.

While the CMOS output is capable of sinking over 100 mA and sourcing over 10 mA, the TLC556 exhibits greatly reduced supply-current spikes during output transitions. This minimizes the need for the large decoupling capacitors required by the NE556.

These devices have internal electrostatic-discharge (ESD) protection circuits that prevent catastrophic failures at voltages up to 2000 V as tested under MIL-STD-883C, Method 3015. However, care should be exercised in handling these devices, as exposure to ESD may result in degradation of the device parametric performance.

All unused inputs should be tied to an appropriate logic level to prevent false triggering.

The TLC556C is characterized for operation from 0°C to 70°C. The TLC556I is characterized for operation from -40°C to 85°C. The TLC556M is characterized for operation over the full military temperature range of -55°C to 125°C

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingCAD Design ToolsSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierSymbolsFootprintsSamples
TLC556CDACTIVE0 to 700.45 | 1kuSOIC (D) | 14 View 50 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
TLC556CDG4ACTIVE0 to 700.45 | 1kuSOIC (D) | 14 View 50 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
TLC556CDRACTIVE 0.41 | 1kuSOIC (D) | 14 View 2500 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
TLC556CDRG4ACTIVE 0.41 | 1kuSOIC (D) | 14 View 2500 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
TLC556CNACTIVE 0.41 | 1kuPDIP (N) | 14 View 25 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
TLC556CNE4ACTIVE 0.41 | 1kuPDIP (N) | 14 View 25 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
TLC556IDACTIVE 0.49 | 1kuSOIC (D) | 14 View 50 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
TLC556IDG4ACTIVE 0.49 | 1kuSOIC (D) | 14 View 50 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
TLC556IDRACTIVE0 to 700.45 | 1kuSOIC (D) | 14 View 2500 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
TLC556IDRG4ACTIVE0 to 700.45 | 1kuSOIC (D) | 14 View 2500 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
TLC556INACTIVE 0.45 | 1kuPDIP (N) | 14 View 25 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
TLC556INE4ACTIVE 0.45 | 1kuPDIP (N) | 14 View 25 | 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*: 20 WeeksTLC556CD
AmericasArrow 61
Avnet 964
Newark 275
Rochester Electronics 200
AsiaFarnell Asia >1k
WPI 110
EuropeAbacus Polar >1k
Arrow Northern Europe 200
Avnet-SILICA >1k
Farnell >1k
WorldwideDigiKey 938
Mouser Electronics 203
TI Lead Time*: 20 WeeksTLC556CDG4
EuropeEBV Elektronik >1k
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksTLC556CDR
AmericasRochester Electronics >1k
WorldwideDigiKey 22
TI Lead Time*: 20 WeeksTLC556CDRG4
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksTLC556CN
AmericasArrow >1k
Avnet 573
Newark 104
Rochester Electronics 505
AsiaFarnell Asia 816
WPI 57
EuropeAbacus Polar >1k
Avnet-SILICA 825
EBV Elektronik >1k
Farnell 51
Spoerle >1k
WorldwideDigiKey 526
TI Lead Time*: 20 WeeksTLC556CNE4
AmericasRochester Electronics 385
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksTLC556ID
AmericasArrow 175
Avnet 398
Newark 269
Rochester Electronics >1k
AsiaFarnell Asia 269
WPI 71
EuropeArrow Northern Europe 300
Spoerle 200
WorldwideDigiKey 522
TI Lead Time*: 20 WeeksTLC556IDG4
AsiaFarnell Asia 73
EuropeCompel 16
Farnell 73
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksTLC556IDR
AmericasRochester Electronics >1k
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksTLC556IDRG4
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksTLC556IN
AmericasAvnet 300
Newark >1k
AsiaFarnell Asia 146
WPI 50
EuropeArrow Northern Europe 400
Arrow Southern Europe 50
Avnet-SILICA 175
Compel 461
EBV Elektronik 325
Farnell 108
Spoerle 700
WorldwideDigiKey >1k
Mouser Electronics 690
TI Lead Time*: 20 WeeksTLC556INE4
WorldwideDigiKey  Available
Mouser Electronics 45
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
TLC556CD RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
TLC556CDG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
TLC556CDR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
TLC556CDRG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
TLC556CN RoHS Compliant Pb-Free (RoHS) CU NIPDAU N/A for Pkg TypeViewView
TLC556CNE4 RoHS Compliant Pb-Free (RoHS) CU NIPDAU N/A for Pkg TypeViewView
TLC556ID RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
TLC556IDG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
TLC556IDR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
TLC556IDRG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
TLC556IN RoHS Compliant Pb-Free (RoHS) CU NIPDAU N/A for Pkg TypeViewView
TLC556INE4 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 TLC556 Help

Datasheet

Simulation Models

Customers Who Evaluated This Product Also Evaluated...
Part # Name Product Family Comments
SE555 Precision Timer CLOCKS AND TIMERS-TIMERS(CT) TI customers also evaluated this product.
TLC555 Low Power Timer CLOCKS AND TIMERS-TIMERS(CT) TI customers also evaluated this product.
LM337 3 Pin 1.5A Adjustable Negative Voltage Regulator LINEAR REGULATORS-STANDARD VOLTAGE REGULATORS TI customers also evaluated this product.

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