18QHTF21-15.995-PD

Oscillators Overview

The 18QHTF21-15.995-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a fixed frequency of 15.995 MHz and utilizes LVCMOS output logic. The device is designed for low-power applications, featuring a supply voltage of 1.8V and an integrated standby or power-down function to minimize energy consumption during idle periods. It is housed in a compact 4-SMD, no-lead package with dimensions of 2.0x1.6 mm, suitable for space-constrained surface-mount designs.

Oscillators Feature Summary

• LVCMOS output logic interface
• Integrated standby and power-down functionality
• Compact 4-SMD no-lead package

Oscillators Applications

• General-purpose clock signal generation
• Low-power embedded systems
• Digital circuit timing references

Oscillators Procurement Notes

Verify the specific ordering suffix and manufacturer part number against official Mercury Electronics documentation to ensure compatibility. Confirm that the required frequency tolerance and load capacitance meet the target circuit design specifications before procurement. Cross-reference the package outline drawing to validate mechanical fit within the assembly constraints.

Oscillators Selection Notes

Select this component when a precise 15.995 MHz reference is required with minimal power usage. The 1.8V operating voltage makes it suitable for modern low-voltage digital logic families. Ensure the application can accommodate the 2.0x1.6 mm footprint and that the LVCMOS swing levels are compatible with the receiving input stages.

Oscillators Part Context

This model belongs to the 18QHTF21 series of surface-mount oscillators from Mercury Electronics. The series typically offers various frequency options within a standardized small form factor. The 'PD' suffix indicates the inclusion of power-down control capabilities, distinguishing it from continuous-output variants within the same physical package family.

Oscillators Replacement Considerations

Direct substitutes must match the 15.995 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no-lead package dimensions. Verify pinout compatibility and electrical characteristics such as rise/fall times and duty cycle stability before swapping components.