18QHTF21-27.178-PD

Oscillators Overview

The 18QHTF21-27.178-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd, operating at a fixed frequency of 27.178 MHz. It utilizes LVCMOS output logic and functions with a supply voltage of 1.8V. The device features a power-down capability for standby mode control. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm. This component is designed for applications requiring precise clock signals within low-voltage digital systems.

Oscillators Feature Summary

• Supports LVCMOS output logic for standard digital interfacing
• Includes power-down functionality for energy-efficient standby operation
• Utilizes a small form factor 4-SMD no lead package

Oscillators Applications

• General purpose clock signal generation
• Low voltage digital system timing
• Portable electronic devices requiring compact oscillators

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 4-SMD package footprint matches your PCB layout constraints. Check for any specific RoHS compliance documentation if required by your manufacturing standards.

Oscillators Selection Notes

Select this model when a 27.178 MHz clock source is required with LVCMOS compatibility. Consider the 1.8V operating voltage as a primary constraint for power supply design. The compact 2.0x1.6mm size makes it suitable for space-constrained layouts. Evaluate the need for power-down control if dynamic power management is part of the system architecture.

Oscillators Part Context

This oscillator belongs to the 18QHTF21 series from Mercury Electronics, which offers various frequencies including 51.2 MHz and 96.768 MHz variants. The series is characterized by its small SMD footprint and LVCMOS outputs. Mercury Electronics has a long history in quartz crystal manufacturing, positioning these components within their standard clock oscillator product line.

Oscillators Replacement Considerations

Direct substitutes include other 27.178 MHz LVCMOS oscillators in 4-SMD packages with 1.8V operation. Verify pinout compatibility and electrical specifications before swapping. Cross-reference with similar models from the same manufacturer family if availability is an issue.