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Product Detailed Parameters
- Description：12.15 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：12.15 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 18QHTF21-12.150-OE is a crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd, operating at a frequency of 12.15 MHz. It utilizes LVCMOS output logic and functions as a standard XO type device. The component supports a supply voltage of 1.8V and includes an enable/disable control feature for power management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm, designed for surface-mount applications requiring precise timing signals.
Feature Summary
- Supports enable/disable functionality via external control signal
- Utilizes LVCMOS output logic for digital interface compatibility
- Compact 4-SMD no-lead surface mount package design
Applications
- Embedded systems requiring precise clock synchronization
- Consumer electronics with space-constrained PCB layouts
- Industrial control modules utilizing low-voltage logic interfaces
Procurement Notes
Verify the specific frequency tolerance and load capacitance requirements against the system design specifications before procurement. Ensure that the 1.8V supply rail stability meets the oscillator's operational limits to maintain frequency accuracy. Confirm that the PCB footprint matches the 2.0x1.6 mm SMD package dimensions to avoid assembly issues during manufacturing.
Selection Notes
Select this component when a low-profile surface-mount oscillator is required for 12.15 MHz applications. Consider the LVCMOS output compatibility with downstream digital circuits. Evaluate the enable/disable pin utility for power-sensitive designs. Compare physical size constraints against alternative packages to ensure optimal board space utilization.
Part Context
This model belongs to the Mercury Electronics 18QHTF21 series of clock oscillators. The series offers various frequencies within a standardized 2.0x1.6 mm footprint. The 'OE' suffix typically indicates the presence of an enable pin, distinguishing it from basic output-only variants. This family targets modern electronic devices requiring small form factors and flexible power management options.
Replacement Considerations
Direct substitutes must match the 12.15 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify equivalent enable/disable functionality. Cross-reference with other manufacturers offering identical pinout and electrical characteristics to ensure seamless integration without redesigning the host circuit.
