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Product Detailed Parameters
- Description：66.208 MHz XO 1.8V 2.0X1.6 MM PD
- Series：18QHTF21
- Mfr：Mercury Electronics Ind. Co. Ltd
- Package：Strip
- Base Resonator：Crystal
- Type：XO (Standard)
- Frequency：66.208 MHz
- Function：Standby (Power Down)
- 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 18QHTF21-66.208-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 66.208 MHz and utilizes LVCMOS output logic. The device requires a supply voltage of 1.8V and includes a standby function for power down control. It is housed in a compact 4-SMD, No Lead package, designed for surface-mount applications.
Feature Summary
- Supports low-voltage operation with 1.8V supply
- Integrates standby capability for power management
- Provides LVCMOS digital output signals
Applications
- General-purpose clock signal generation
- Digital circuit timing references
- Embedded system clock sources
Procurement Notes
Verify the specific frequency tolerance and load capacitance requirements against your design specifications before procurement. Ensure the 1.8V supply rail stability meets the component's operational needs. Confirm that the PCB footprint matches the 4-SMD No Lead package dimensions provided in the official datasheet to ensure correct assembly and electrical connectivity.
Selection Notes
Select this component when a precise 66.208 MHz clock source is required for LVCMOS-compatible circuits. Consider the 1.8V operating voltage constraint and the need for power-down functionality during selection. Evaluate the thermal and mechanical constraints of the 4-SMD package within the target application environment to ensure reliable performance.
Part Context
This part belongs to the Mercury Electronics 18QHTF21 series of surface-mount crystal oscillators. The series offers various frequencies with standardized LVCMOS outputs. The 18QHTF21-66.208-PD specifically addresses applications requiring a 66.208 MHz reference clock with low-power standby features in a small form factor.
Replacement Considerations
Direct substitutes include other 66.208 MHz LVCMOS oscillators from Mercury Electronics such as the 18QHTF21-66.008-PD or 18QHTF21-67.563-PD if frequency flexibility exists. Verify pin compatibility and voltage levels when considering alternatives from other manufacturers.
