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| Part Number | PL138-28OI | PL138-48OI | PL138-28SI | PL138-28OC | 
|---|---|---|---|---|
| Manufacturer | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | 
| Product Status | Discontinued at Digi-Key | Active | Discontinued at Digi-Key | Discontinued at Digi-Key | 
| Type | Fanout Buffer (Distribution) | Fanout Buffer (Distribution), Multiplexer | Fanout Buffer (Distribution) | Fanout Buffer (Distribution) | 
| Number of Circuits | 1 | 1 | 1 | 1 | 
| Ratio - Input:Output | 1:2 | 2:4 | 1:2 | 1:2 | 
| Differential - Input:Output | Yes/Yes | Yes/Yes | Yes/Yes | Yes/Yes | 
| Input | CML, HCSL, LVCMOS, LVDS, LVHSTL, LVPECL, SSTL | CML, HCSL, LVCMOS, LVDS, LVHSTL, LVPECL, SSTL | CML, HCSL, LVCMOS, LVDS, LVHSTL, LVPECL, SSTL | CML, HCSL, LVCMOS, LVDS, LVHSTL, LVPECL, SSTL | 
| Output | LVPECL | LVPECL | LVPECL | LVPECL | 
| Frequency - Max | 1 GHz | 1 GHz | 1 GHz | 1 GHz | 
| Voltage - Supply | 2.375V ~ 3.63V | 2.375V ~ 3.63V | 2.375V ~ 3.63V | 2.375V ~ 3.63V | 
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | 0°C ~ 70°C | 
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | 
| Package / Case | 8-TSSOP (0.173", 4.40mm Width) | 20-TSSOP (0.173", 4.40mm Width) | 8-SOIC (0.154", 3.90mm Width) | 8-TSSOP (0.173", 4.40mm Width) | 
| Supplier Device Package | 8-TSSOP | 20-TSSOP | 8-SOP | 8-TSSOP |