18QHTF21-68.200-PD

Overview

The 18QHTF21-68.200-PD is a 68.2 MHz crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a supply voltage of 1.8V and utilizes LVCMOS output logic. The device features a Standby (Power Down) function for power management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm.

Feature Summary

• Supports Low Voltage CMOS (LVCMOS) output signaling
• Integrates a standby mode for power reduction
• Utilizes a surface-mount package design

Applications

• Portable electronic devices requiring low power consumption
• Communication equipment utilizing standard clock signals
• Embedded systems with limited voltage rails

Procurement Notes

Verify the specific ordering suffix against manufacturer documentation to confirm the presence of the power-down feature. Ensure the requested variant matches the required frequency stability and load capacitance specifications for the target circuit design before finalizing orders.

Selection Notes

Select this component when a 1.8V supply is available and a small form factor is required. Confirm that the LVCMOS output level is compatible with the receiving logic inputs. Verify that the standby control signal availability aligns with system power management requirements.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which focuses on miniature quartz oscillators. The series typically offers various frequencies and supply voltages within a standardized 2.0x1.6mm footprint, catering to space-constrained consumer and industrial electronics applications.

Replacement Considerations

Direct substitutes include other 1.8V, 68.2MHz LVCMOS oscillators in a 4-SMD 2.0x1.6mm package. Verify pin compatibility and electrical parameters such as phase noise and jitter before swapping.