18QHTF21-49.590-PD

Overview

The 18QHTF21-49.590-PD is a standard frequency crystal oscillator manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a nominal frequency of 49.590 MHz and utilizes LVCMOS output logic. The device is designed for low-power applications, featuring a supply voltage range of 1.8V and supporting a standby power-down mode. It is housed in a compact 4-SMD, no-lead package with dimensions of 2.0x1.6mm, suitable for surface-mount assembly.

Feature Summary

• Supports LVCMOS output signal format
• Includes standby power-down functionality
• Operates on a 1.8V supply voltage

Applications

• Battery-powered electronic devices
• Portable consumer electronics
• General-purpose digital timing circuits

Procurement Notes

Verify the specific operating temperature range and load capacitance requirements against the official datasheet before integration. Confirm that the 1.8V supply rail stability meets the oscillator's specifications to ensure frequency accuracy. Ensure PCB layout guidelines for the 2.0x1.6mm SMD package are followed to maintain signal integrity.

Selection Notes

Select this component when a precise 49.590 MHz clock source is required in space-constrained designs. The 1.8V operation makes it suitable for modern low-voltage logic families. Consider the standby feature if power management during idle states is a system requirement. Verify compatibility with the target application's voltage levels and current consumption limits.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz crystals and oscillators. The manufacturer is a Taiwan-based supplier providing timing solutions including TCXOs and VCTCXOs. This specific model represents a standard frequency XO variant within their portfolio of surface-mount timing components.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation.