18QHTF21-114.560-PD

Overview

The 18QHTF21-114.560-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 114.56 MHz and utilizes LVCMOS output logic levels. The device is designed for low-voltage applications, functioning with a supply voltage of 1.8V. It features a Standby (Power Down) control function to manage power consumption when the oscillator is not in active use. The component is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm, suitable for surface-mount assembly processes.

Feature Summary

• Supports Standby (Power Down) mode for energy efficiency
• Utilizes LVCMOS output logic for digital interface compatibility
• Operates on a 1.8V supply voltage rail

Applications

• Precision timing circuits requiring 114.56 MHz reference
• Low-power embedded systems utilizing LVCMOS interfaces
• Surface-mount electronics with strict height constraints

Procurement Notes

Verify the specific ordering suffix 'PD' confirms the Standby (Power Down) functionality, as distinct from other variants like 'OE' which may offer Enable/Disable controls. Ensure the 1.8V supply requirement aligns with the target system's voltage domain. Confirm the 4-SMD No Lead package footprint matches the PCB layout design specifications before finalizing procurement orders.

Selection Notes

Select this component when a 114.56 MHz frequency is strictly required alongside LVCMOS signaling standards. The choice is appropriate for designs prioritizing low voltage operation at 1.8V. Consider the physical dimensions of the 2.0x1.6mm package against available board space. Evaluate the necessity of the Standby feature for power management strategies within the specific application environment.

Part Context

This part belongs to the QHTF series of crystal oscillators from Mercury Electronics. The series typically offers various frequencies and supply voltages. The '18' prefix generally indicates the 1.8V operating voltage range. This specific model provides a high-frequency solution in a miniature form factor, differentiating it from larger through-hole or standard SMD packages found in older timing components.

Replacement Considerations

Direct substitutes must match the 114.56 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm footprint. Verify that any alternative component also supports the Standby (Power Down) control mode to maintain functional equivalence in power-sensitive designs.