ChipApex | Global Electronic Components Supplier
SEARCH
Search Product
Search Post
— IC芯片 | 连接器 | 传感器 | 被动器件 —
Consult the customer manager about the wholesale price.
consultation hotline：86-132-6715-2157
email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.
Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.
Product Detailed Parameters
- Description：56.56 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：56.56 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)：24mA
- 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：-
Download product information
Overview
The Mercury Electronics 18QHTF21-56.560-PD is a quartz crystal unit operating at a fundamental frequency of 56.560 MHz. This component utilizes a HC-49/U style package configuration, designed for surface mount or through-hole integration depending on specific lead frame variations within the series. The device is engineered to provide stable oscillation frequencies for digital circuits requiring precise timing references.
Feature Summary
- Fundamental mode operation ensures high frequency stability and low phase noise characteristics.
- Standardized mechanical footprint facilitates automated assembly and reliable solder joint formation.
- Optimized load capacitance matching reduces external circuit complexity for oscillator design.
Applications
- Microcontroller clock generation
- Communication module timing references
- Digital signal processing synchronization
Procurement Notes
Verify the exact pinout configuration and load capacitance requirements against the target schematic before procurement. Ensure the specified frequency tolerance aligns with system timing budgets. Confirm that the operating temperature range meets environmental specifications for the intended deployment scenario.
Selection Notes
Select this component when a fundamental frequency near 56.560 MHz is required with standard packaging constraints. Evaluate the equivalent series resistance (ESR) limits against the oscillator driver strength. Consider thermal stability requirements if the application operates in extreme ambient conditions.
Part Context
This part belongs to the Mercury Electronics quartz crystal lineup, focusing on general-purpose timing solutions. The model designation indicates specific frequency and package attributes common in industrial and consumer electronics applications requiring reliable clock sources.
Replacement Considerations
Direct substitutes must match the 56.560 MHz frequency, HC-49/U form factor, and electrical parameters. Verify compatibility with existing PCB footprints and oscillator circuit designs before substitution.
