18QHTF21-19.500-PD

Oscillators Overview

The 18QHTF21-19.500-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 19.5 MHz and utilizes an LVCMOS output interface. The device is designed for a supply voltage of 1.8V and features a standby power-down mode. It is housed in a compact 4-SMD, no-lead package with dimensions of 2.0x1.6 mm.

Oscillators Feature Summary

• Supports Enable/Disable functionality via standby control
• Utilizes LVCMOS output signal compatibility
• Features low-profile surface-mount packaging

Oscillators Applications

• General electronic circuit timing
• Digital signal processing systems
• Communication equipment clocking

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target application design before procurement. Confirm that the 1.8V supply voltage aligns with the system power rails. Ensure the 4-SMD no-lead package footprint matches the PCB layout specifications to guarantee proper solder joint integrity and mechanical stability during assembly.

Oscillators Selection Notes

Select this component when a precise 19.5 MHz reference is required within a space-constrained environment. The LVCMOS interface ensures compatibility with standard digital logic families operating at 1.8V. Consider the standby feature if power management during idle states is a critical design requirement for the end product.

Oscillators Part Context

This part belongs to the 18QHTF21 series of surface-mount oscillators from Mercury Electronics. The series offers various frequency options within a standardized 2.0x1.6 mm footprint. The 'PD' suffix indicates the inclusion of a power-down or standby pin configuration, distinguishing it from continuous-operation variants.

Oscillators Replacement Considerations

Direct substitutes include other 19.5 MHz LVCMOS oscillators in 4-SMD packages with identical 1.8V operation and pinout configurations. Verify electrical parameters such as phase noise and jitter specifications to ensure functional equivalence in high-speed applications.