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Product Detailed Parameters
- Description：66.14 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：66.14 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 18QHTF21-66.140-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 66.14 MHz and utilizes LVCMOS output logic. The device requires a supply voltage of 1.8V and features enable/disable functionality for power management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm.
Feature Summary
- Supports LVCMOS output logic for digital interface compatibility
- Includes enable/disable control pin for power optimization
- Utilizes a leadless SMD package for surface mount assembly
Applications
- Digital signal processing systems
- Communication equipment clocking
- Embedded system timing references
Procurement Notes
Verify the specific frequency tolerance and load capacitance requirements against the official datasheet before procurement. Ensure the 1.8V supply voltage aligns with the target circuit design. Confirm the enable/disable pin configuration matches the system control logic to ensure proper operation during standby modes.
Selection Notes
Select this component when a low-voltage 1.8V supply is available and space-constrained designs require a 2.0x1.6mm footprint. The LVCMOS output is suitable for direct connection to standard digital logic families. Consider the enable feature if power efficiency during idle states is a critical design parameter.
Part Context
This part belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz frequency control products. The manufacturer has over 50 years of experience in Taiwan producing crystals and oscillators. This series represents their standard XO offerings designed for modern portable and high-density electronic applications.
Replacement Considerations
Direct substitutes must match the 66.14 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no-lead package dimensions. Verify that any alternative component supports the same enable/disable functionality and meets identical electrical specifications for reliable integration.
