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Microchip Technology DSC1104BE2-027.0000 — Crystals & Oscillators

DSC1104BE2-027.0000 MEMS XO 27 MHz HCSL – Microchip

MPNDSC1104BE2-027.0000
Active

Microchip DSC1104BE2-027.0000, XO (Standard) MEMS oscillator, 27 MHz HCSL output, ±25 ppm stability, 2.25V–3.6V supply, -20°C to +70°C, 6-VDFN surface-mount package.

Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

DSC1104BE2-027.0000 specifications
ParameterValue
TypeXO (Standard)
SeriesDSC1104
MountingSurface Mount
Supply voltage2.25V ~ 3.6V
Current - supply42mA
Current - supply (Disable)95µA
Frequency27 MHz
Frequency stability±25ppm
Operating temperature-20°C~70°C
Size (Dimension)0.197\" L x 0.126\" W (5.00mm x 3.20mm)
Height - seated0.035\" (0.90mm)
OutputHCSL
PackageTube
FunctionStandby (Power Down)
Base resonatorMEMS
Case6-VDFN

Product details

Active production — MEMS-based 27 MHz HCSL clock source

HCSL (High-Speed Current Steering Logic) outputs are common in PCIe reference clock applications — the DC-coupled 2.25V–3.6V supply range lets this part sit on a 2.5V or 3.3V rail without a level translator.

Standby power-down and supply range

The 2.25V–3.6V supply range covers common 2.5V and 3.3V logic rails — the part runs from either without an external regulator.

6-VDFN package — board-fit notes

Housed in a 6-VDFN package measuring 5.00 mm × 3.20 mm with a seated height of 0.90 mm, the footprint is compatible with standard 6-pin oscillator land patterns — no special via-in-pad or buried-via fan-out is required.

Frequently asked questions

Can DSC1104BE2-027.0000 replace an LVPECL oscillator?

No — the output is HCSL, not LVPECL. The DC bias and termination schemes differ: HCSL requires a 50 Ω pull-up to ground on each output leg, while LVPECL needs a Thevenin equivalent termination to VCC – 2 V. A direct swap without board-level changes will not work.

What is the difference between DSC1104BE2-027.0000 and DSC1104AE2-027.0000?

The evidence does not list a DSC1104AE2 variant. Within the DSC1104 series, the suffix encodes frequency stability and temperature range — the BE2 suffix on this part specifies ±25 ppm stability over -20°C to +70°C. Confirm the exact order code against your BOM.

Does DSC1104BE2-027.0000 require external termination?

Yes — HCSL outputs are open-source and require external 50 Ω pull-down resistors to ground on each output leg (typically to the 0 V plane) to set the correct swing. The datasheet application note shows the recommended resistor placement within 0.2 inches of the output pin.