18QHTF21-57.513667-PD

Overview

The 18QHTF21-57.513667-PD is a crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 57.513667 MHz with LVCMOS output logic. The device requires a 1.8V supply voltage and features a Standby (Power Down) control function. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm.

Feature Summary

• Supports low-voltage operation at 1.8V for power efficiency
• Includes standby mode capability for power management
• Utilizes LVCMOS output logic for digital interface compatibility
• Designed in a small surface-mount package for space-constrained applications

Applications

• Embedded systems requiring precise clock signals
• Portable electronic devices needing low-power oscillators
• Digital communication interfaces utilizing LVCMOS standards

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Ensure that the 1.8V supply rail stability meets the oscillator's operational specifications. Confirm that the PCB layout accommodates the 2.0x1.6mm footprint and that the standby pin is correctly terminated if power-down functionality is utilized in the final application.

Selection Notes

Select this component when a fixed frequency of 57.513667 MHz is required with LVCMOS outputs. The 1.8V operating voltage makes it suitable for modern low-power digital circuits. Consider the physical size constraints due to the 4-SMD no-lead package. Verify that the operating temperature range aligns with the environmental conditions of the intended deployment scenario.

Part Context

This part belongs to the QHTF series of crystal oscillators from Mercury Electronics. The series typically offers standard XO configurations with various frequency options. The 'PD' suffix indicates the inclusion of a power-down or standby feature, distinguishing it from continuous-operation variants within the same family.

Replacement Considerations

Direct replacements must match the 57.513667 MHz frequency, 1.8V supply, LVCMOS output, and 2.0x1.6mm package. Verify electrical parameters such as jitter and phase noise if strict timing performance is critical. Ensure the replacement part also supports the standby function if power management is required.