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Product Detailed Parameters
- Description：12.187 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：12.187 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 18QHTF21-12.187-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 12.187 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and includes an enable/disable control feature. It is housed in a compact 4-SMD, No Lead package, designed for surface-mount applications requiring precise timing signals.
Feature Summary
- LVCMOS output logic for digital interface compatibility
- Integrated enable/disable control functionality
- Compact 4-SMD no-lead surface mount package
Applications
- General purpose clock generation in embedded systems
- Timing reference for microcontrollers
- Digital signal processing circuits
Procurement Notes
Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Ensure the 1.8V supply voltage aligns with your system power rails. Confirm that the enable/disable pin configuration matches your board layout to ensure proper operation and power management during idle states.
Selection Notes
Select this component when a low-voltage 1.8V LVCMOS oscillator is required for space-constrained designs. The 4-SMD package offers a small footprint suitable for high-density PCB layouts. Consider the enable/disable feature if power efficiency during inactive periods is a critical design parameter for the target application.
Part Context
This part belongs to the 18QHTF21 series of standard oscillators from Mercury Electronics. The series typically features LVCMOS outputs and various supply voltages. The suffix -OE indicates specific packaging or handling options consistent with the manufacturer's product coding standards for surface-mount devices.
Replacement Considerations
Direct substitutes must match the 12.187 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package dimensions. Verify pinout compatibility and electrical specifications such as jitter and phase noise before substitution to ensure system stability.
