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Product Detailed Parameters
- Description：88.888 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：88.888 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)：26mA
- 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 18QHTF21-88.888-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 88.888 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features an enable/disable control function. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm. The component is RoHS compliant and classified under Moisture Sensitivity Level 1.
Feature Summary
- Supports Enable/Disable functionality for power management
- Compact 4-SMD No Lead surface mount package
- LVCMOS output logic compatibility
Applications
- General purpose timing clock generation
- Embedded system synchronization
- Digital signal processing circuits
Procurement Notes
Verify the specific suffix (OE) against the manufacturer's current datasheet to confirm the exact electrical characteristics and pinout configuration. Ensure that the 1.8V supply requirement aligns with the target circuit design. Confirm RoHS compliance status if environmental regulations are a strict constraint for the final assembly.
Selection Notes
Select this component when a precise 88.888 MHz reference is required for low-voltage digital systems. The choice depends on the availability of the specific 4-SMD footprint and the need for an active enable control signal. Consider thermal performance and load capacitance requirements relative to the connected microcontroller or FPGA inputs.
Part Context
This part belongs to the QHTF series of standard oscillators from Mercury Electronics. The series offers various frequencies and voltage options, including 2.5V variants like the 25QHTF21 model. The '18' prefix indicates the 1.8V operating voltage, distinguishing it from higher voltage counterparts in the same physical package family.
Replacement Considerations
Direct substitutes may include other 88.888 MHz LVCMOS oscillators in 2.0x1.6mm packages. Verify frequency tolerance and phase noise specifications against the original datasheet. Cross-reference with similar Mercury models such as the 25QHTF21 series if voltage levels can be adapted.
