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Product Detailed Parameters
- Description：6.7888 MHz XO 1.8V 2.0X1.6 MM OE
- Series：18QHTF21
- Mfr：Mercury Electronics Ind. Co. Ltd
- Package：Strip
- Base Resonator：Crystal
- Type：XO (Standard)
- Frequency：6.7888 MHz
- Function：Enable/Disable
- Output：LVCMOS
- Voltage - Supply：1.8V
- Frequency Stability：±50ppm
- Absolute Pull Range (APR)：-
- Operating Temperature：-40°C ~ 85°C
- Spread Spectrum Bandwidth：-
- Current - Supply (Max)：21mA
- Ratings：-
- Mounting Type：Surface Mount
- Package / Case：4-SMD, No Lead
- Size / Dimension：0.079" L x 0.063" W (2.00mm x 1.60mm)
- Height - Seated (Max)：0.031" (0.80mm)
- Supplier Device Package：-
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Overview
The 18QHTF21-6.7888-OE is a standard crystal oscillator (XO) from Mercury Electronics' QuikXO series, operating at a frequency of 6.7888 MHz. It utilizes an LVCMOS output interface and supports a supply voltage of 1.8V with enable/disable functionality. The device features a base resonator type of crystal and offers a frequency stability of ±50ppm. It is housed in a compact 4-SMD, No Lead package and has a maximum supply current of 24mA.
Feature Summary
- QuikXO series fast-delivery CMOS output clock oscillator
- Built to order for standard or custom frequencies
- Enable/Disable control functionality
Applications
- General purpose timing applications requiring precise clock signals
- Embedded systems utilizing LVCMOS interfaces
- Consumer electronics requiring low power consumption
Procurement Notes
Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply voltage aligns with the system's power rails. Ensure the 4-SMD, No Lead package footprint matches the PCB layout specifications to guarantee proper soldering and mechanical stability during assembly.
Selection Notes
Select this component when a standard frequency near 6.7888 MHz is required with LVCMOS compatibility. Consider the ±50ppm stability for applications not demanding high precision. Evaluate the 24mA max current draw against available power budgets. The enable/disable feature allows for dynamic power management in battery-operated devices.
Part Context
Mercury Electronic Ind. Co., Ltd. is a Taiwan-based manufacturer specializing in frequency control products, including quartz crystals and oscillators. The company has a history of over 40 years in the industry. The 18QHTF21 series belongs to their QuikXO line, designed for fast delivery and built-to-order flexibility for both standard and custom frequencies.
Replacement Considerations
Direct substitutes within the same series include models like 18QHTF21-37.888-OE or 18QHTF21-90.088-OE, provided the frequency difference is acceptable for the application. Verify pinout and electrical characteristics match before substitution.
