18QHTF21-61.875-PD

Overview

The 18QHTF21-61.875-PD is a standard crystal oscillator (XO) manufactured by Mercury United Electronics, Inc. It operates at a nominal frequency of 61.875 MHz with a frequency stability of ±50ppm. The device utilizes LVCMOS output logic and functions on a 1.8V supply voltage. It features a Standby (Power Down) control capability and is housed in a compact 4-SMD, No Lead package.

Feature Summary

• Supports low-voltage operation at 1.8V
• Includes standby power-down functionality
• Provides LVCMOS output signal compatibility

Applications

• General clock generation for digital circuits
• Timing reference for communication modules
• Embedded system clock sources

Procurement Notes

Verify the manufacturer designation carefully, as listings may attribute this part to Mercury United Electronics, Inc. rather than Mercury Electronic Ind. Co., Ltd. Confirm the specific frequency tolerance and operating temperature range against your design requirements before ordering. Ensure the 4-SMD no-lead package dimensions match your PCB footprint constraints.

Selection Notes

Select this component when a precise 61.875 MHz timing source is required with moderate stability. The ±50ppm tolerance suits applications that do not demand high-precision TCXO performance. Consider the 1.8V supply requirement and ensure the host circuitry supports LVCMOS logic levels for direct interfacing without additional level shifting.

Part Context

This oscillator belongs to the 18QHTF21 series from Mercury, which offers various frequencies in a small surface-mount form factor. The series typically includes options with different frequencies and stability ratings, catering to diverse consumer and industrial electronics needs requiring reliable quartz-based timing solutions.

Replacement Considerations

Direct substitutes must match the 61.875 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Verify equivalent stability specifications if available.