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Product Detailed Parameters
- Description：13.51 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：13.51 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)：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 18QHTF21-13.510-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 13.51 MHz and utilizes an LVCMOS output signal format. The device supports a supply voltage of 1.8V and includes an enable/disable control function for power management. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications requiring precise timing signals.
Feature Summary
- LVCMOS output interface for digital logic compatibility
- Integrated enable/disable pin for power control
- Compact 4-SMD no-lead surface mount package
Applications
- Digital clock generation in embedded systems
- Timing reference for microcontrollers
- Communication interface synchronization
Procurement Notes
Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply voltage aligns with the system power rails. Ensure the 4-SMD footprint matches the PCB layout dimensions. Cross-reference the datasheet for operating temperature range specifications to guarantee reliability under intended environmental conditions.
Selection Notes
Select this component when a low-voltage 1.8V operation is required alongside a standard LVCMOS output. The enable/disable feature makes it suitable for battery-powered or power-sensitive designs. Consider the small form factor of the 4-SMD package for space-constrained layouts. Verify that the 13.51 MHz frequency meets the system clock requirements without additional dividers.
Part Context
This part belongs to the Mercury Electronic XO series, which provides quartz-based timing solutions. Mercury Electronics has been manufacturing frequency control products since 1973 and is recognized as a pioneer in the Taiwan crystal industry. The company specializes in quartz crystals, oscillators, and filters for various electronic applications.
Replacement Considerations
Compatible substitutes include other 13.51 MHz LVCMOS oscillators in 4-SMD packages from manufacturers such as Epson, SiTime, or TXC. Ensure replacement parts match the 1.8V supply requirement and enable/disable functionality. Verify pinout compatibility and thermal characteristics before substitution.
