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| PartNumber | LM556CN/NOPB | LM556CN | LM556CN NS |
| Description | Timers & Support Products DUAL TIMER | Timers & Support Products Dual Timer | |
| Manufacturer | Texas Instruments | ON Semiconductor | - |
| Product Category | Timers & Support Products | Timers & Support Products | - |
| RoHS | Y | Y | - |
| Series | LM556 | - | - |
| Type | Standard | Standard | - |
| Number of Internal Timers | 2 Timer | 2 Timer | - |
| Supply Voltage Max | 16 V | 16 V | - |
| Supply Voltage Min | 4.5 V | 4.5 V | - |
| Minimum Operating Temperature | - 40 C | 0 C | - |
| Maximum Operating Temperature | + 85 C | + 70 C | - |
| Mounting Style | Through Hole | Through Hole | - |
| Package / Case | PDIP-14 | PDIP-14 Wide | - |
| Packaging | Tube | Tube | - |
| Height | 3.3 mm | 3.56 mm | - |
| Length | 19.05 mm | 19.56 mm | - |
| Width | 6.35 mm | 6.6 mm | - |
| Brand | Texas Instruments | ON Semiconductor / Fairchild | - |
| High Level Output Current | 200 mA | 200 mA | - |
| Low Level Output Current | - 200 mA | - 200 mA | - |
| Operating Supply Current | 3000 uA | - | - |
| Pd Power Dissipation | 1620 mW | 600 mW | - |
| Product Type | Timers & Support Products | Timers & Support Products | - |
| Factory Pack Quantity | 25 | 25 | - |
| Subcategory | Clock & Timer ICs | Clock & Timer ICs | - |
| Unit Weight | 0.057144 oz | - | - |