18QHTF21-66.088561-PD

Overview

The 18QHTF21-66.088561-PD is a crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 66.088561 MHz with LVCMOS output logic. The device supports a supply voltage of 1.8V and includes a standby (power down) function. It is housed in a 4-SMD, No Lead package with dimensions of 2.0x1.6mm.

Feature Summary

• Supports low voltage operation at 1.8V
• Includes standby power down capability
• Compact surface mount package design

Applications

• General clock signal generation
• Digital circuit timing reference
• Embedded system clock sources

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target application datasheet 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 layout accommodates the 2.0x1.6mm footprint and no-lead package type for proper soldering and thermal management during assembly processes.

Selection Notes

Select this component when a precise 66.088561 MHz clock source is required for low-power digital applications. The LVCMOS output interface ensures compatibility with standard logic families. The integrated power-down feature allows for energy conservation in battery-operated devices. Consider the small form factor for space-constrained designs requiring high-frequency stability without excessive board real estate consumption.

Part Context

This part belongs to the 18QHTF21 series of surface-mount crystal oscillators from Mercury Electronics. The series typically offers various frequencies and voltage options. The 'PD' suffix indicates the inclusion of a power-down control pin or function. These components are designed for general-purpose timing applications where size and power efficiency are critical factors in the overall system architecture.

Replacement Considerations

Direct substitutes must match the 66.088561 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify equivalent electrical specifications including phase noise and jitter if applicable. Cross-reference with other manufacturers offering similar SMD oscillators ensuring identical pinout and mechanical dimensions for drop-in replacement.