18QHTF21-19.1958-PD

Oscillators Overview

The 18QHTF21-19.1958-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 19.1958 MHz and utilizes LVCMOS output logic levels. 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 2.0x1.6mm, suitable for surface-mount assembly on printed circuit boards.

Oscillators Feature Summary

• Supports LVCMOS output signal compatibility for digital interfacing
• Includes standby mode capability for power reduction
• Utilizes a small form-factor SMD package for space-constrained designs

Oscillators Applications

• Clock generation for embedded systems requiring precise timing
• Power-sensitive portable electronic devices
• Digital communication interfaces utilizing LVCMOS standards

Oscillators Procurement Notes

Verify the specific ordering suffix against manufacturer documentation to confirm electrical characteristics and package type. Ensure that the required frequency tolerance and load capacitance match the target circuit design requirements before finalizing procurement orders.

Oscillators Selection Notes

Select this component when a stable 19.1958 MHz clock source is required with minimal power consumption. The 1.8V operating voltage makes it suitable for modern low-voltage logic families. Consider the physical footprint constraints as the device uses a 2.0x1.6mm package.

Oscillators Part Context

This part belongs to the 18QHTF21 series of crystal oscillators from Mercury Electronic. The series typically offers various frequency options within a standardized small outline package. The -PD suffix generally indicates the presence of a power-down control feature, distinguishing it from standard continuous-operation variants.

Oscillators Replacement Considerations

Direct replacements must match the 19.1958 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no-lead package dimensions. Verify pinout compatibility and electrical specifications with alternative manufacturers before substitution.