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Product Detailed Parameters
- Description：12.228 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：12.228 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 18QHTF21-12.228-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 12.228 MHz and utilizes LVCMOS output logic. 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 with dimensions of 2.0x1.6 mm.
Feature Summary
- Supports low-voltage operation at 1.8V
- Includes standby capability for power management
- Provides LVCMOS digital output signals
Applications
- Embedded system clock generation
- Digital signal processing timing references
- Communication interface synchronization
Procurement Notes
Verify the specific operating temperature range and load capacitance requirements against your circuit design before procurement. Confirm that the 1.8V supply rail stability meets the oscillator's noise sensitivity specifications. Ensure the PCB footprint matches the 4-SMD no-lead package dimensions to guarantee proper soldering and mechanical retention during assembly processes.
Selection Notes
Select this component when a precise 12.228 MHz reference is required for LVCMOS-compatible circuits. Consider the 1.8V supply constraint and the need for power-down functionality. Evaluate the small 2.0x1.6 mm form factor against available board space. Compare performance against other Mercury oscillators if different frequencies or voltage levels are needed.
Part Context
This part belongs to the Mercury Electronics 18QHTF21 series of surface-mount crystal oscillators. The series offers various frequency options within a standardized small outline package. These devices are designed for applications requiring stable clock signals in portable and space-constrained electronic systems.
Replacement Considerations
Direct substitutes include other 12.228 MHz LVCMOS oscillators in 4-SMD packages from Mercury Electronics, such as variants with different supply voltages or temperature grades. Verify pin compatibility and electrical parameters before substitution.
