18QHTF21-100.250-PD

Overview

The 18QHTF21-100.250-PD is a crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a frequency of 100.25 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and includes a standby or power-down function for energy management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm.

Feature Summary

• Supports low voltage CMOS (LVCMOS) output logic levels
• Includes standby mode capability for power reduction
• Utilizes lead-free surface mount packaging

Applications

• General purpose clock signal generation
• Digital circuit timing references
• Embedded system clock sources

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before ordering. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 4-SMD no-lead footprint matches your PCB layout constraints. Check for any specific RoHS compliance documentation if required by your manufacturing standards.

Selection Notes

Select this component when a precise 100.25 MHz clock source is required in a minimal space-constrained environment. The LVCMOS interface ensures compatibility with standard digital logic families operating at 1.8V. Consider the standby feature if power efficiency during idle periods is a critical design parameter. Verify thermal performance within the specified operating temperature range.

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 typically indicates the inclusion of a power-down control pin, allowing the user to disable the oscillator output to save power when not in use.

Replacement Considerations

Direct replacements must match the 100.25 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm footprint. Verify pinout compatibility and electrical specifications such as phase noise and jitter before substituting with other manufacturers' parts.