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Product Detailed Parameters
- Description：67.108864 M XO 1.8V 2.0X1.6MM OE
- Series：18QHTF21
- Mfr：Mercury Electronics Ind. Co. Ltd
- Package：Strip
- Base Resonator：Crystal
- Type：XO (Standard)
- Frequency：67.108864 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 18QHTF21-67.108864-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a fixed frequency of 67.108864 MHz and utilizes LVCMOS output logic levels. The device is designed for a supply voltage of 1.8V and features an Enable/Disable control function to manage power states. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm.
Feature Summary
- Supports Enable/Disable functionality for power management
- Utilizes LVCMOS output interface
- Compact 4-SMD surface-mount package
Applications
- Digital signal processing systems
- Communication equipment clocking
- Embedded microcontroller timing
Procurement Notes
Verify the specific suffix 'OE' corresponds to the Enable/Disable variant when ordering. Confirm that the 1.8V supply requirement aligns with the target system design. Ensure the 2.0x1.6 mm footprint matches the PCB layout constraints. Cross-reference the manufacturer's latest datasheet for pin configuration details before integration.
Selection Notes
Select this component where a precise 67.108864 MHz reference is required within space-constrained designs. The 1.8V operating voltage makes it suitable for low-power portable electronics. The Enable/Disable feature allows for dynamic power savings compared to always-on oscillators. Consider thermal performance and load capacitance requirements during circuit design.
Part Context
This part belongs to the 18QHTF21 series from Mercury Electronics, which focuses on small-footprint oscillators. The series typically offers various frequencies and voltage options. The '18' prefix indicates the 1.8V supply class, while '21' denotes the specific package size family. This model provides a stable clock source for high-speed digital interfaces.
Replacement Considerations
Direct substitutes include other 67.108864 MHz LVCMOS oscillators in 2.0x1.6 mm packages with 1.8V operation. Verify pin compatibility and enable/disable logic polarity. Alternative models from Mercury such as the 18QHTF21-67.108864-PD offer Standby functions instead of Enable/Disable, requiring functional verification.
