18QHTF21-104.325-PD

Overview

The 18QHTF21-104.325-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 104.325 MHz with an LVCMOS output logic level. The device requires a 1.8V supply voltage and features a power-down (standby) function for energy management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.00mm x 1.60mm. This component is designed for surface-mount applications requiring precise timing signals.

Feature Summary

• Supports low-voltage operation at 1.8V
• Includes standby mode for power reduction
• Provides LVCMOS output signal compatibility

Applications

• Battery-powered portable devices
• Embedded systems requiring precise clocking
• Communication equipment interfaces

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Confirm that the 1.8V supply rail is stable and within the specified operating range to ensure reliable oscillator performance. Ensure the PCB footprint matches the 4-SMD no-lead package dimensions exactly to avoid assembly issues.

Selection Notes

Select this model when a 104.325 MHz clock source is required with minimal power consumption. The integrated standby feature makes it suitable for applications with duty-cycle constraints. Consider the small form factor if space is limited on the PCB layout. Ensure the host system supports LVCMOS logic levels for direct interfacing without additional buffering.

Part Context

This part belongs to the 18QHTF21 series of surface-mount crystal oscillators from Mercury Electronics. The series offers various frequencies and voltage options, all sharing a common compact 2.0x1.6mm package. The 'PD' suffix indicates the inclusion of a power-down control pin, allowing for active management of power usage during idle periods.

Replacement Considerations

Direct substitutes must match the 104.325 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Verify pinout compatibility and electrical specifications such as current consumption and startup time. Cross-reference with other manufacturers offering similar low-profile oscillators if Mercury stock is unavailable.