18QHTF21-21.200-PD

Oscillators Overview

The 18QHTF21-21.200-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 21.2 MHz and utilizes LVCMOS output logic levels. The device is designed for low-power applications, featuring a supply voltage of 1.8V and an integrated standby or power-down function to minimize energy consumption when inactive. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm, suitable for space-constrained surface-mount designs.

Oscillators Feature Summary

• LVCMOS output interface for digital signal compatibility
• Integrated standby mode for power reduction
• Compact 4-SMD no-lead surface mount packaging

Oscillators Applications

• Portable electronic devices requiring low power consumption
• Digital communication systems utilizing LVCMOS interfaces
• Embedded control circuits needing precise clock timing

Oscillators Procurement Notes

Verify the specific ordering suffix PD against the manufacturer's current documentation to ensure correct pinout and electrical specifications. Confirm that the 1.8V supply requirement aligns with your system design before procurement. Check for any recent updates to the datasheet regarding operating temperature ranges or reliability standards.

Oscillators Selection Notes

Select this component when a 21.2 MHz clock source is required with strict size limitations due to its 2.0x1.6mm footprint. Ensure the system logic supports LVCMOS levels and that a 1.8V power rail is available. Consider the standby feature if power management during idle states is a critical design constraint.

Oscillators Part Context

This part belongs to the QHTF21 series of surface-mount oscillators from Mercury Electronics. The series typically offers various frequencies and voltage options within similar small form factors. The 'PD' suffix indicates the inclusion of a power-down capability, distinguishing it from continuous-operation variants in the same physical package family.

Oscillators Replacement Considerations

Direct substitutes must match the 21.2 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify pin compatibility and electrical characteristics with other manufacturers offering similar low-profile oscillators before substitution.