18QHTF21-123.870968-PD

Overview

The 18QHTF21-123.870968-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 123.870968 MHz with an LVCMOS output logic level. The device requires a supply voltage of 1.8V and features a standby power-down function for energy management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm. The unit supports a frequency stability of ±50ppm and functions within an operating temperature range of -40°C to +85°C.

Feature Summary

• Supports low-voltage operation at 1.8V
• Includes standby power-down capability
• Utilizes LVCMOS output interface

Applications

• High-speed digital signal processing systems
• Communication equipment requiring precise clocking
• Embedded control modules

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Confirm that the 1.8V supply rail is stable and meets the current consumption specifications outlined in the official datasheet. Ensure the PCB footprint matches the 2.0x1.6mm SMD package dimensions to prevent assembly issues.

Selection Notes

Select this component when a precise 123.870968 MHz clock source is required for LVCMOS-compatible circuits. Consider the ±50ppm stability limit for timing-sensitive applications. The low-profile 4-SMD package is suitable for space-constrained designs. Evaluate the power-down feature if dynamic power management is a priority for the system architecture.

Part Context

This model belongs to the 18QHTF21 series of surface-mount oscillators from Mercury Electronics. The series is characterized by small form factors and low power consumption. The 'PD' suffix indicates the inclusion of a power-down pin or functionality. These components are designed for modern electronic devices requiring reliable frequency generation in minimal board space.

Replacement Considerations

Direct replacements must match the 123.870968 MHz frequency, 1.8V supply, and LVCMOS output. Verify compatibility with the 2.0x1.6mm footprint. Check if alternative manufacturers offer equivalent stability ratings and thermal performance within the specified operating temperature range.