18QHTF21-30.690-PD

Oscillators Overview

The 18QHTF21-30.690-PD is a standard crystal oscillator manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a frequency of 30.69 MHz and utilizes LVCMOS output logic levels. The device is designed for a supply voltage of 1.8V and features an enable/disable control function alongside standby (power down) capabilities. It is housed in a compact 4-SMD, no lead package with dimensions of 2.0x1.6 mm.

Oscillators Feature Summary

• Supports LVCMOS output interface for digital logic compatibility
• Includes enable/disable and standby power management functions
• Compact 4-SMD surface-mount package design

Oscillators Applications

• General purpose timing circuits requiring 30.69 MHz reference
• Embedded systems utilizing 1.8V logic families
• Portable electronic devices requiring low-power standby modes

Oscillators Procurement Notes

Verify the specific suffix 'PD' corresponds to the required power-down functionality and packaging style. Confirm that the 1.8V supply voltage aligns with the target system's power rails. Ensure the 4-SMD footprint matches the PCB layout constraints. Cross-reference the manufacturer datasheet for electrical tolerances and operating temperature ranges before finalizing component selection.

Oscillators Selection Notes

Select this component when a precise 30.69 MHz clock signal is required within a 1.8V logic environment. The choice depends on the necessity for active power management via the enable pin. Consider the physical size constraints imposed by the 2.0x1.6 mm package. Evaluate if LVCMOS output swing is compatible with downstream receiver inputs without additional level shifting.

Oscillators Part Context

This part belongs to the Mercury Electronics XO series, which provides standard frequency generation solutions. The series typically offers various frequencies and voltages. The 18QHTF21 model line focuses on small form-factor oscillators suitable for space-constrained applications. Mercury Electronics specializes in quartz-based timing components.

Oscillators Replacement Considerations

Direct substitutes must match the 30.69 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify pinout compatibility and electrical characteristics such as load capacitance and drive strength. Check for equivalent enable/control pin functionality to ensure seamless integration into existing designs.