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Product Detailed Parameters
- Description：12.688 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：12.688 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 18QHTF21-12.688-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 12.688 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and features an enable/disable control function. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm.
Feature Summary
- Integrates LVCMOS output logic for digital interface compatibility
- Includes hardware enable and disable control functionality
- Designed for surface mount assembly in small form factor applications
Applications
- General purpose clock signal generation
- Embedded system timing references
- Consumer electronics circuit boards
Procurement Notes
Verify the specific frequency tolerance and operating temperature range against the official datasheet before integration. Confirm that the 1.8V supply requirement aligns with the target system power rails. Ensure the 4-SMD no lead package footprint matches the PCB layout design to prevent mounting issues during assembly.
Selection Notes
Select this component when a low-profile surface mount oscillator is required for 12.688 MHz applications. Consider the LVCMOS output compatibility with downstream logic circuits. Evaluate the 1.8V supply constraint against available power resources. Assess the physical size requirements against the 2.0x1.6 mm package dimensions.
Part Context
This part belongs to the Mercury Electronics XO series, which provides standard frequency control solutions. The manufacturer specializes in quartz crystals and oscillators, offering various packages and frequencies. This specific model represents a compact solution for timing needs in modern electronic devices requiring precise clock signals.
Replacement Considerations
Compatible substitutes include the 18QHTF21-50.688-OE and 18QHTF21-37.888-OE from the same manufacturer. These parts share identical packaging and electrical characteristics but operate at different frequencies. Verify frequency requirements before substitution.
