HX21A0001Z 100 MHz LVCMOS Oscillator Specifications and Applications

ElecSuppliers Part Number GuideSep 26, 2026

HX21A0001Z is a 100 MHz crystal oscillator from Diodes Incorporated and belongs to the SaRonix-eCera HX series. It provides an LVCMOS output and is designed for electronic systems that require a stable clock signal.

The oscillator operates from a supply voltage of 1.8 V to 3.3 V and includes an enable and disable function. It is supplied in a compact 4-SMD no-lead package measuring approximately 2.50 mm × 2.00 mm.

HX21A0001Z Key Specifications

HX21A0001Z has a nominal output frequency of 100 MHz and a frequency stability of ±25 ppm. The specified operating temperature range is -40°C to +105°C.

The maximum supply current with the output enabled is 15 mA, while the maximum supply current in the disabled state is 15 µA. The oscillator provides an LVCMOS logic output and is designed for a maximum 15 pF output load.

HX21A0001Z Package and Interface

HX21A0001Z uses a 4-SMD no-lead surface-mount package with a maximum seated height of approximately 1.00 mm. The compact footprint makes it suitable for PCB designs where board space is limited.

The oscillator uses an enable/disable control input. The output can be enabled when the control input is above the specified threshold and placed into a high-impedance state when disabled, allowing the host system to control clock activity and reduce standby power consumption.

HX21A0001Z Frequency Performance

The 100 MHz output provides a stable timing source for digital systems, communication equipment, embedded controllers, networking hardware, and other electronic circuits requiring a fixed-frequency clock.

The specified ±25 ppm frequency stability accounts for operating temperature, supply voltage variation, initial calibration, aging, load changes, shock, and vibration according to the manufacturer's specification.

The device also specifies a maximum rise and fall time of 2 ns and a maximum phase jitter of 1 ps over the stated measurement bandwidth. These characteristics can be important in timing-sensitive digital designs.

HX21A0001Z Applications

HX21A0001Z can be used as a clock source in networking equipment, communication systems, embedded processors, digital interfaces, industrial electronics, and other systems requiring a 100 MHz LVCMOS timing signal.

The enable/disable function can also be useful in systems that selectively shut down clock sources during standby or low-power operating modes.

HX21A0001Z Design Considerations

When designing with HX21A0001Z, engineers should verify the supply voltage, output load, clock frequency, frequency stability, and enable control requirements of the target system.

PCB layout should provide a clean power supply and appropriate local decoupling. The clock output trace should also be routed carefully to minimize unwanted noise, ringing, and coupling into sensitive analog or RF circuits.

The oscillator should be operated within its specified temperature and supply-voltage ranges. For systems with particularly strict timing requirements, the complete clock path should be evaluated rather than considering oscillator specifications alone.

HX21A0001Z Compared With Other HX Series Oscillators

The SaRonix-eCera HX series includes oscillators with different frequency, supply, current, and performance configurations. HX21A0001Z is specifically identified as a 100 MHz LVCMOS oscillator with 1.8 V to 3.3 V supply operation and ±25 ppm frequency stability.

A related oscillator with the same package size or nominal frequency should not automatically be considered a direct replacement. Engineers should compare output logic, supply voltage, frequency stability, enable behavior, current consumption, package dimensions, and operating temperature.

HX21A0001Z Sourcing Considerations

When sourcing HX21A0001Z, buyers should specify the complete Diodes Incorporated part number because closely related oscillator models can have different frequencies, electrical characteristics, or output configurations.

Current distributor data identifies HX21A0001Z as a Diodes Incorporated product and marks the part as obsolete at DigiKey. This makes production status an important consideration when purchasing the device for a new design or long-term supply program.

For replacement projects, buyers should verify available stock, date code, packaging, traceability, manufacturer status, and potential lifecycle-compatible alternatives before committing to volume procurement.