18QHTF21-64.0375-PD

Overview

The 18QHTF21-64.0375-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a frequency of 64.0375 MHz with an LVCMOS output logic level. The device requires a supply voltage of 1.8V and features a power-down function controlled by the -PD suffix, allowing for standby mode activation. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm. This component is designed for timing applications requiring precise clock signals in space-constrained electronic systems.

Feature Summary

• Provides stable 64.0375 MHz clock signal generation using LVCMOS output interface
• Supports low-power operation through dedicated power-down control functionality
• Utilizes surface-mount 4-SMD no-lead packaging for automated assembly compatibility

Applications

• Digital signal processing circuits requiring precise clock synchronization
• Communication equipment utilizing standard LVCMOS interfaces
• Portable consumer electronics with limited board space constraints

Procurement Notes

Verify that the specific part number includes the -PD suffix to confirm power-down capability. Ensure the 1.8V supply voltage aligns with system design requirements. Confirm the 4-SMD no-lead package matches PCB footprint specifications. Check manufacturer documentation for operating temperature range details before integration.

Selection Notes

Select this model when a 64.0375 MHz frequency is required alongside LVCMOS output compatibility. Consider the 1.8V operating voltage for low-power system designs. The power-down feature supports energy efficiency in battery-operated devices. Evaluate the 2.0x1.6mm package size against available PCB real estate constraints.

Part Context

This oscillator belongs to the 18QHTF21 series from Mercury Electronics, which offers various frequencies within a standardized 2.0x1.6mm SMD form factor. The series typically includes options with enable/disable or power-down controls. Similar parts in this family may differ in frequency, voltage, or control pin configurations while maintaining the same physical footprint.

Replacement Considerations

Direct substitutes must match the 64.0375 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no-lead package. Parts with different control suffixes (e.g., -OE) may have incompatible enable logic. Verify pinout compatibility and thermal characteristics before substitution.