18QHTF21-112.640-PD

Overview

The 18QHTF21-112.640-PD is a crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 112.64 MHz with a supply voltage of 1.8V. The device features an LVCMOS output logic and includes power-down functionality. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm.

Feature Summary

• Provides stable clock signals at 112.64 MHz
• Supports low voltage operation at 1.8V
• Integrates power-down control for energy management

Applications

• Digital signal processing systems
• Communication equipment timing
• Embedded system clock generation

Procurement Notes

Verify the specific suffix 'PD' confirms the power-down feature against the official datasheet. Ensure the 1.8V supply requirement matches the target circuit design. Confirm the 4-SMD no-lead package footprint aligns with PCB layout constraints before finalizing procurement.

Selection Notes

Select this component when a precise 112.64 MHz clock source is required for low-voltage digital circuits. The choice depends on the necessity for power-down capability to manage standby currents. Evaluate the small 2.0x1.6 mm form factor against available board space limitations.

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. The 'PD' suffix specifically denotes the inclusion of a power-down pin or function, distinguishing it from standard enable/disable variants.

Replacement Considerations

Direct substitutes include other 112.64 MHz LVCMOS oscillators in 4-SMD packages with 1.8V operation and power-down features. Verify pin compatibility and electrical specifications before swapping.