18QHTF21-4.2944-PD

Oscillators Overview

The 18QHTF21-4.2944-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a fixed frequency of 4.2944 MHz and utilizes LVCMOS output logic levels. The device is designed for low-power applications, functioning with a supply voltage of 1.8V. It supports a standby or power-down mode to conserve energy when 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 space-constrained surface-mount designs.

Oscillators Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes standby (power down) functionality for energy efficiency
• Designed for low-voltage operation at 1.8V
• Utilizes a small-footprint 4-SMD no-lead package

Oscillators Applications

• Low-power clock signal generation in portable electronics
• Timing reference for microcontrollers and processors
• Digital communication interfaces requiring stable clock sources
• Battery-operated devices needing power-down capabilities

Oscillators Procurement Notes

Verify the specific suffix 'PD' confirms the power-down feature and LVCMOS output type as documented. Ensure the operating temperature range matches your system requirements. Confirm that the 1.8V supply voltage aligns with your target circuit design before procurement.

Oscillators Selection Notes

Select this component when a precise 4.2944 MHz clock source is required with minimal power consumption. The 1.8V supply requirement dictates compatibility with low-voltage logic families. The small 2.0x1.6mm package is ideal for dense PCB layouts where space is limited compared to larger oscillator packages.

Oscillators Part Context

This part belongs to the 18QHTF21 series of crystal oscillators from Mercury Electronics. The series offers various frequencies and voltage options. The '-PD' suffix typically indicates the inclusion of a power-down control pin, distinguishing it from continuously running variants within the same physical footprint family.

Oscillators Replacement Considerations

Direct replacements must match the 4.2944 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify pinout compatibility and power-down functionality if substituting with other manufacturers' parts.