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Product Detailed Parameters
- Description：13.5305 MHz XO 1.8V 2.0X1.6MM PD
- Series：18QHTF21
- Mfr：Mercury Electronics Ind. Co. Ltd
- Package：Strip
- Base Resonator：Crystal
- Type：XO (Standard)
- Frequency：13.5305 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 18QHTF21-13.5305-PD is a crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 13.5305 MHz with an LVCMOS output logic type. The device requires a supply voltage of 1.8V and features a power-down function for standby mode control. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm. This component is designed for applications requiring precise clock signals in low-power electronic systems.
Feature Summary
- Supports LVCMOS output logic for standard digital interface compatibility
- Includes power-down functionality to enable standby mode operation
- Utilizes a small form factor SMD package for space-constrained designs
Applications
- General purpose clock signal generation
- Low-power embedded system timing
- Digital circuit synchronization
Procurement Notes
Verify the specific frequency tolerance and load capacitance requirements against the official datasheet before integration. Ensure the 1.8V supply rail stability meets the oscillator's operational specifications. Confirm that the PCB footprint matches the 2.0x1.6mm package dimensions to avoid assembly issues during manufacturing.
Selection Notes
Select this component when a 13.5305 MHz reference is required with LVCMOS outputs. Consider the 1.8V operating voltage constraint for power budgeting. The power-down feature offers flexibility for energy management in portable or battery-operated devices compared to always-on alternatives.
Part Context
This part belongs to the 18QHTF21 series of surface-mount oscillators from Mercury Electronics. The series typically includes various frequencies within a standardized 4-SMD package. The 'PD' suffix indicates the inclusion of a power-down pin or control mechanism, distinguishing it from standard continuous-operation variants in the same family.
Replacement Considerations
Direct substitutes include other 13.5305 MHz LVCMOS oscillators in 4-SMD packages with 1.8V operation. Verify pinout compatibility and electrical parameters such as phase noise and jitter before swapping manufacturers.
