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Product Detailed Parameters
- Description：10.6985 MHz XO 1.8V 2.0X1.6MM PD
- Series：18QHTF21
- Mfr：Mercury Electronics Ind. Co. Ltd
- Package：Strip
- Base Resonator：Crystal
- Type：XO (Standard)
- Frequency：10.6985 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)：22mA
- 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 18QHTF21-10.6985-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 10.6985 MHz and utilizes LVCMOS output logic. The device is designed for low-voltage applications with a supply voltage of 1.8V. It features a standby or power-down function to manage energy consumption during inactive periods. The component is housed in a compact 4-SMD, no-lead package with dimensions of 2.00mm x 1.60mm. This surface-mount technology ensures compatibility with automated assembly processes.
Feature Summary
- LVCMOS output logic for digital interface compatibility
- Integrated standby and power-down functionality
- Compact 4-SMD no-lead surface mount package
Applications
- Digital signal processing systems
- Communication equipment requiring precise timing
- Embedded control circuits
Procurement Notes
Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply rail is stable within the operational limits defined in the official datasheet. Ensure the PCB footprint matches the 2.00mm x 1.60mm SMD package dimensions to prevent mounting issues. Cross-reference the part number suffix PD to confirm the presence of the power-down feature as documented.
Selection Notes
Select this component when a low-profile, low-voltage oscillator is required for space-constrained designs. The LVCMOS output is suitable for direct interfacing with standard digital logic families. Consider the power-down capability if energy efficiency is a critical system requirement. Verify that the operating temperature range meets the environmental conditions of the intended application site.
Part Context
This model belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz-based frequency control products. The series includes various frequencies such as 51.2 MHz and 68.085 MHz, all sharing similar physical footprints and electrical characteristics like the 1.8V supply and LVCMOS outputs. Mercury Electronics has been a supplier of these timing components since 1973.
Replacement Considerations
Direct substitutes include other variants within the same Mercury Electronics 18QHTF21 series, such as 18QHTF21-51.200-PD or 18QHTF21-68.085-PD, provided the frequency difference is acceptable for the application. Ensure any replacement maintains the 1.8V supply and LVCMOS output specifications.
