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Product Detailed Parameters
- Description：13.567968 M XO 1.8V 2.0X1.6MM PD
- Series：18QHTF21
- Mfr：Mercury Electronics Ind. Co. Ltd
- Package：Strip
- Base Resonator：Crystal
- Type：XO (Standard)
- Frequency：13.567968 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 18QHTF21-13.567968-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 13.567968 MHz and utilizes LVCMOS output logic levels. The component requires a 1.8V supply voltage for operation. It features a standby mode for power-down functionality to reduce energy consumption during inactive periods. The device is housed in a compact 4-SMD, No Lead package, suitable for surface-mount assembly on printed circuit boards.
Feature Summary
- Supports low-power applications through integrated standby capability
- Provides stable LVCMOS signal output for digital interfacing
- Designed for surface-mount integration with leadless packaging
Applications
- Low-power consumer electronics requiring precise timing
- Digital communication systems utilizing LVCMOS interfaces
- Portable devices necessitating compact oscillator solutions
Procurement Notes
Verify the specific operating voltage and frequency requirements against system specifications before procurement. Confirm that the 1.8V supply aligns with the target circuit design. Ensure compatibility with the 4-SMD no-lead footprint dimensions. Check for any specific handling requirements associated with leadless packages during assembly processes.
Selection Notes
Select this component when a 13.567968 MHz clock source is required with LVCMOS output compatibility. Consider the 1.8V supply constraint and ensure the application can support this voltage level. Evaluate the need for standby functionality to manage power consumption effectively. Assess the physical space constraints to accommodate the small SMD package size.
Part Context
This oscillator belongs to the HTF21 series from Mercury Electronics, which offers programmable quick-turn CMOS options. The series is known for providing reliable frequency control products. Mercury has been a pioneer in the crystal industry since 1973, focusing on Taiwan-based manufacturing. This specific model represents a standard XO configuration within their portfolio.
Replacement Considerations
Direct substitutes include other 13.567968 MHz LVCMOS oscillators with identical 1.8V supply and 4-SMD no-lead footprints. Verify pinout compatibility and electrical characteristics such as load capacitance and drive strength. Alternative models from different manufacturers must match the frequency tolerance and stability requirements specified for the original part.
