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| PartNumber | LTC4257IDD#PBF | LTC4257IDD#TRPBF | LTC4257IDD-1 |
| Description | Power Switch ICs - POE / LAN IEEE 802.3af PD Pwr over E Int Cntr | Power Switch ICs - POE / LAN IEEE 802.3af PD Pwr over E Int Cntr | Power Switch ICs - POE / LAN LTC4257-1 - IEEE 802.3af PD Power over Ethernet Interface Controller with Dual Current Limit |
| Manufacturer | Analog Devices Inc. | Analog Devices Inc. | - |
| Product Category | Power Switch ICs - POE / LAN | Power Switch ICs - POE / LAN | - |
| RoHS | Y | Y | - |
| Type | Powered Device - PD | Powered Device - PD | - |
| Standard | 802.3af | 802.3af | - |
| Current Limit | 350 mA | - | - |
| On Resistance Max | 2 Ohms | - | - |
| Operating Supply Voltage | - 57 V | - | - |
| Minimum Operating Temperature | - 40 C | - | - |
| Maximum Operating Temperature | + 85 C | - | - |
| Mounting Style | SMD/SMT | SMD/SMT | - |
| Package / Case | DFN-8 | DFN-8 | - |
| Packaging | Tube | Reel | - |
| Series | LTC4257 | LTC4257 | - |
| Brand | Analog Devices | Analog Devices | - |
| Operating Supply Current | 3 mA | - | - |
| Product Type | Power Switch ICs - POE / LAN | Power Switch ICs - POE / LAN | - |
| Factory Pack Quantity | 121 | 2500 | - |
| Subcategory | Switch ICs | Switch ICs | - |