18QHTF21-59.136-PD

Overview

The 18QHTF21-59.136-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a fixed frequency of 59.136 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and includes a standby (power down) feature for energy management. It is housed in a compact 4-SMD, no lead package with dimensions of 2.0mm x 1.6mm.

Feature Summary

• Supports low-voltage operation at 1.8V
• Integrates standby mode for power reduction
• Provides LVCMOS signal output

Applications

• General timing circuits requiring precise clock signals
• Embedded systems utilizing low-voltage logic interfaces
• Portable electronic devices necessitating power-down capabilities

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply rail aligns with the system's power architecture. Ensure the 4-SMD no-lead package footprint matches the PCB layout constraints to guarantee proper soldering and mechanical stability during assembly.

Selection Notes

Select this component when a stable 59.136 MHz reference is required within space-constrained designs. The choice is appropriate for applications prioritizing low power consumption due to the integrated standby function. Engineers should consider the LVCMOS interface compatibility with downstream digital components to ensure signal integrity without additional level shifting.

Part Context

This oscillator belongs to the 18QHTF21 series from Mercury Electronics, which focuses on small-form-factor timing solutions. The series typically offers various frequency options within a standardized 2.0x1.6mm package. This specific model represents a standard XO variant designed for general-purpose digital timing applications in consumer and industrial electronics.

Replacement Considerations

Direct substitutes must match the 59.136 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no-lead package. Verify pinout compatibility and thermal characteristics. Cross-reference with other manufacturers offering identical electrical specifications and physical dimensions to ensure seamless integration into existing designs.