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Product Detailed Parameters
- Description：13.68 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：13.68 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 18QHTF21-13.680-PD is a standard crystal oscillator manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a fixed frequency of 13.68 MHz and utilizes LVCMOS output logic levels. The device requires a 1.8V supply voltage and features a standby mode for power down functionality. 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 requirement
- Includes standby capability for power management
- Provides LVCMOS output signal compatibility
Applications
- Battery-powered electronic devices
- Portable consumer electronics
- General-purpose digital clock generation
Procurement Notes
Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Ensure the 1.8V supply rail stability meets the oscillator's operational specifications to maintain signal integrity. Confirm that the PCB footprint matches the 4-SMD No Lead package dimensions provided in the official datasheet to avoid assembly issues.
Selection Notes
Select this component when a precise 13.68 MHz reference is required for systems operating on a 1.8V logic domain. Consider the standby feature if power conservation is critical during idle periods. Evaluate the small form factor suitability for space-constrained designs compared to larger through-hole or standard SMD packages.
Part Context
This part belongs to the Mercury Electronics 18QHTF series of standard XO oscillators. The series offers various frequencies including 51.2 MHz and 96.768 MHz variants. All units share similar packaging and electrical characteristics, differing primarily in output frequency and specific application tuning.
Replacement Considerations
Direct substitutes include other 13.68 MHz LVCMOS oscillators in 4-SMD packages from compatible manufacturers. Verify pinout compatibility and supply voltage matching. Cross-reference with Mercury models like 18QHTF21-51.200-PD only if frequency adjustment is acceptable.
