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Product InformationFeatures
DESCRIPTION/ORDERING INFORMATIONThese devices are precision timing circuits capable of producing accurate time delays or oscillation. In the time-delay or monostable mode of operation, the timed interval is controlled by a single external resistor and capacitor network. In the astable mode of operation, the frequency and duty cycle can be controlled independently with two external resistors and a single external capacitor. The threshold and trigger levels normally are two-thirds and one-third, respectively, of VCC. 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 (RESET) input can override all other inputs and can be used to initiate a new timing cycle. When RESET goes low, the flip-flop is reset, and the output goes low. When the output is low, a low-impedance path is provided between discharge (DISCH) and ground. The output circuit is capable of sinking or sourcing current up to 200 mA. Operation is specified for supplies of 5 V to 15 V. With a 5-V supply, output levels are compatible with TTL inputs. |
| Price | Packaging | CAD Design Tools | Samples | ||||||
| Device | Status | Temp (oC) | Price | Quantity | Package | Pins | Top Side Marking | Package QTY | Package Carrier | Symbols | Footprints | Samples |
| NA555D | ACTIVE | -40 to 105 | 0.24 | 1ku | SOIC (D) | 8 | View | 75 | TUBE | Purchase Samples | ||
| NA555DG4 | ACTIVE | -40 to 105 | 0.24 | 1ku | SOIC (D) | 8 | View | 75 | TUBE | Purchase Samples | ||
| NA555DR | ACTIVE | -40 to 105 | 0.22 | 1ku | SOIC (D) | 8 | View | 2500 | LARGE T&R | |||
| NA555DRG4 | ACTIVE | -40 to 105 | 0.22 | 1ku | SOIC (D) | 8 | View | 2500 | LARGE T&R | |||
| NA555P | ACTIVE | -40 to 105 | 0.24 | 1ku | PDIP (P) | 8 | View | 50 | TUBE | |||
| NA555PE4 | ACTIVE | -40 to 105 | 0.24 | 1ku | PDIP (P) | 8 | View | 50 | TUBE | |||
* 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.
| Reported Distributor Inventory as of 11:49 AM GMT, 20 Nov 2009 | |||
| Region | Company | In Stock | Purchase |
| TI Lead Time*: 15 WeeksNA555D | |||
| Americas | Arrow | >1k | |
| Newark | >1k | ||
| Rochester Electronics | >1k | ||
| Asia | Farnell Asia | >1k | |
| WPI | 259 | ||
| Worldwide | DigiKey | 1 | |
| TI Lead Time*: 15 WeeksNA555DG4 | |||
| Worldwide | DigiKey | Available | |
| TI Lead Time*: 15 WeeksNA555DR | |||
| Americas | Arrow | >1k | |
| Worldwide | DigiKey | >1k | |
| TI Lead Time*: 15 WeeksNA555DRG4 | |||
| Worldwide | DigiKey | Available | |
| TI Lead Time*: 14 WeeksNA555P | |||
| Americas | Arrow | >1k | |
| Newark | 570 | ||
| Rochester Electronics | >1k | ||
| Asia | Farnell Asia | 900 | |
| WPI | 138 | ||
| Europe | Farnell | 900 | |
| Worldwide | DigiKey | >1k | |
| Mouser Electronics | >1k | ||
| TI Lead Time*: 14 WeeksNA555PE4 | |||
| Worldwide | DigiKey | Available | |
** 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.
| Product Content | DPPM / MTBF / FIT Rate | ||||
| Device | Eco Plan* | Lead / Ball Finish | MSL Rating / Peak Reflow | Details | Details |
NA555D  | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | View | View |
| NA555DG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | View | View |
| NA555DR | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | View | View |
| NA555DRG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | View | View |
| NA555P | Pb-Free (RoHS) | CU NIPDAU | N/A for Pkg Type | View | View |
| NA555PE4 | Pb-Free (RoHS) | CU NIPDAU | N/A for Pkg Type | View | View |
* 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.
Most useful technical documents for NA555 
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