| Part Number | SY87721LHG | SY87721LHY | 
|---|---|---|
| Manufacturer | Microchip Technology | Microchip Technology | 
| Category | Clock/Timing - Application Specific | Clock/Timing - Application Specific | 
|   |   | |
| Product Status | Obsolete | Obsolete | 
| PLL | Yes | Yes | 
| Main Purpose | Ethernet, SONET/SDH, ATM applications | Ethernet, SONET/SDH, ATM applications | 
| Input | PECL | PECL | 
| Output | CML, PECL | CML, PECL | 
| Number of Circuits | 1 | 1 | 
| Ratio - Input:Output | 1:6 | 1:6 | 
| Differential - Input:Output | Yes/Yes | Yes/Yes | 
| Frequency - Max | 2.7GHz | 2.7GHz | 
| Voltage - Supply | 3.15V ~ 3.45V | 3.15V ~ 3.45V | 
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C | 
| Mounting Type | Surface Mount | Surface Mount | 
| Package / Case | 64-TQFP Exposed Pad | 64-TQFP Exposed Pad | 
| Supplier Device Package | 64-TQFP-EP (10x10) | 64-TQFP-EP (10x10) |