18QHTF21-70.3125-PD

Overview

The 18QHTF21-70.3125-PD is a standard crystal oscillator manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a frequency of 70.3125 MHz with an LVCMOS output logic level. The device requires a 1.8V supply voltage and supports a standby or power-down mode for energy management. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications.

Feature Summary

• Supports standby and power-down modes for efficient power management
• Utilizes LVCMOS output logic for digital interface compatibility
• Designed for surface-mount integration via a leadless SMD package

Applications

• Battery-powered portable electronic devices
• General-purpose digital timing circuits
• Embedded systems requiring low-power clock sources

Procurement Notes

Verify the specific operating temperature range 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 no-lead footprint matches your PCB layout constraints to avoid assembly issues.

Selection Notes

Select this component when a precise 70.3125 MHz clock signal is required with minimal power consumption. The LVCMOS output ensures direct interfacing with standard digital logic families. Consider the leadless package for space-constrained designs where thermal performance and mounting reliability are critical factors.

Part Context

This model belongs to the Mercury Electronics XO series, which provides standard frequency control solutions. The '18' prefix typically indicates the 1.8V supply voltage variant, while 'QHTF' denotes the specific package and performance class within their oscillator lineup.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify electrical compatibility if considering alternatives from other manufacturers.