Microchip Technology DSC1104 series, XO (Standard) MEMS oscillator, 27 MHz, HCSL output, ±25 ppm stability, 2.25V~3.6V supply, -40°C~85°C, 6-SMD no-lead package.
| Parameter | Value |
|---|---|
| Type | XO (Standard) |
| Series | DSC1104 |
| Mounting | Surface Mount |
| Supply voltage | 2.25V ~ 3.6V |
| Current - supply | 42mA |
| Current - supply (Disable) | 95µA |
| Frequency | 27 MHz |
| Frequency stability | ±25ppm |
| Operating temperature | -40°C~85°C |
| Size (Dimension) | 0.126\" L x 0.098\" W (3.20mm x 2.50mm) |
| Height - seated | 0.035\" (0.90mm) |
| Output | HCSL |
| Package | Tape & Reel (TR) |
| Function | Standby (Power Down) |
| Base resonator | MEMS |
| Case | 6-SMD, No Lead |
The DSC1104CI2-027.0000T: This is a Microchip DSC1104 series MEMS-based XO delivering a 27 MHz HCSL clock from a 2.25V to 3.6V rail. HCSL (High-Speed Current Steering Logic) is the standard reference for PCIe Gen1/2/3 and 1000BASE-T Ethernet PHYs – the 27 MHz fundamental feeds the PLL directly without a separate translation stage.
Active supply draw is 42 mA max, typical for a 27 MHz HCSL output stage driving a 50-Ω terminated line.
The MEMS resonator eliminates quartz start-up time and is more resistant to vibration and shock. The ±25 ppm stability is comparable to a standard quartz XO, but the 2.25-3.6 V wide supply range gives it broader rail compatibility without a separate regulator.
HCSL (High-Speed Current Steering Logic) is a differential output standard commonly used for PCIe reference clocks and Ethernet PHYs. It delivers a 27 MHz fundamental that directly feeds the PLL without level translation, saving a buffer stage.
6-SMD, No Lead, 3.20 mm x 2.50 mm footprint, seated height 0.90 mm max.