18QHTF21-59.000-PD

Overview

The 18QHTF21-59.000-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd, operating at a fixed frequency of 59.000 MHz. It utilizes LVCMOS output logic and functions with a supply voltage of 1.8V. The device features a power-down capability for standby mode control. It is housed in a compact 4-SMD, no-lead package with dimensions of 2.0mm x 1.6mm, designed for surface-mount applications.

Feature Summary

• Supports low-voltage operation at 1.8V with integrated power-down functionality
• Generates precise 59 MHz timing signals using LVCMOS output interface
• Utilizes a miniature 4-SMD no-lead footprint suitable for dense PCB layouts

Applications

• Battery-powered portable electronic devices requiring low current consumption
• Digital signal processing systems needing stable clock references
• Communication equipment utilizing standard LVCMOS timing interfaces

Procurement Notes

Verify the specific supply voltage requirement against system design specifications, as this component operates at 1.8V. Confirm that the target application supports LVCMOS logic levels for proper signal compatibility. Ensure the PCB layout accommodates the 2.0x1.6mm SMD package dimensions. Check for any specific power-down sequence requirements if standby modes are utilized in the final product design.

Selection Notes

Select this oscillator when a 59 MHz frequency is required alongside low-power constraints. The 1.8V supply makes it suitable for modern low-voltage digital circuits. Consider the 4-SMD package size for space-constrained designs. Verify that the LVCMOS output swing matches the input requirements of the downstream clock receiver to ensure reliable signal integrity without additional level shifting.

Part Context

This part belongs to the TERM series of quartz crystal oscillators from Mercury Electronics. The model number indicates a 59 MHz frequency variant within the 18QHTF21 family. These components are designed for general-purpose timing applications where stability and low power consumption are prioritized over ultra-high precision or temperature compensation.

Replacement Considerations

Direct substitutes must match the 59 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify pinout compatibility and electrical characteristics before substitution.