18QHTF21-45.176-PD

Oscillators Overview

The 18QHTF21-45.176-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 45.176 MHz and utilizes LVCMOS output logic. The device requires a 1.8V supply voltage and features a power-down function for standby mode control. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6mm.

Oscillators Feature Summary

• Supports low-voltage operation at 1.8V
• Includes power-down capability for energy management
• Provides LVCMOS digital output signals

Oscillators Applications

• General purpose clock signal generation
• Embedded system timing references
• Portable electronic devices requiring low power consumption

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Ensure the 1.8V supply rail stability meets the oscillator specifications. Confirm that the 4-SMD no-lead package footprint matches your PCB layout constraints to avoid assembly issues.

Oscillators Selection Notes

Select this component when a precise 45.176 MHz reference is required in space-constrained designs. The choice depends on the need for LVCMOS compatibility and active power-down control. Consider the thermal operating range and package size relative to other available frequencies in the 18QHTF21 series.

Oscillators Part Context

This part belongs to the 18QHTF21 series of surface-mount oscillators from Mercury Electronics. The series offers various standard frequencies within a small 2.0x1.6mm form factor. The '-PD' suffix indicates the inclusion of a power-down pin or feature for standby control, distinguishing it from always-on variants.

Oscillators Replacement Considerations

Direct replacements must match the 45.176 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no-lead package. Verify pinout compatibility and thermal characteristics. Alternative parts from other manufacturers require careful electrical parameter matching.