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Product Detailed Parameters
- Description：8.2944 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：8.2944 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)：21mA
- 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 18QHTF21-8.2944-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 8.2944 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and features a standby or power-down function for energy management. 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 mode capability
- Compact surface-mount form factor
Applications
- General clock signal generation
- Embedded system timing references
- Portable electronic devices requiring low power consumption
Procurement Notes
Verify the specific frequency tolerance and load capacitance requirements against the official datasheet before integration. Confirm that the 1.8V supply voltage aligns with the target circuit design. Ensure the 4-SMD package footprint matches the PCB layout specifications to guarantee proper soldering and mechanical stability during assembly.
Selection Notes
Select this component when a precise 8.2944 MHz clock source is required in space-constrained designs. The choice is driven by the need for low-voltage compatibility and power-saving standby features. Consider the small 2.0x1.6 mm package size as a primary factor for high-density board layouts where minimal component area is critical.
Part Context
This part belongs to the H21 series of SMD oscillators from Mercury Electronic. The series is characterized by its quartz-based stability and standard LVCMOS outputs. It represents a common solution for providing reliable clock signals in modern consumer electronics and industrial control applications requiring small footprints.
Replacement Considerations
Direct substitutes within the same series include models such as 18QHTF21-8.000-PD and 18QHTF21-51.200-PD, provided the frequency difference is acceptable for the application. Cross-referencing pinouts and electrical characteristics is essential when considering alternative frequencies.
