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Product Detailed Parameters
- Description：6.13635 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：6.13635 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 18QHTF21-6.13635-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a frequency of 6.13635 MHz with an LVCMOS output logic level. The device requires a 1.8V supply voltage and features a Standby (Power Down) control function to manage power consumption. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm. This component is designed for timing applications requiring precise frequency generation within low-power electronic systems.
Feature Summary
- Supports Low Voltage CMOS (LVCMOS) output interface for digital circuit compatibility
- Includes Standby mode functionality for effective power management
- Utilizes a surface-mount 4-SMD No Lead package for automated assembly
Applications
- Battery-powered portable devices requiring low current consumption
- Digital signal processing circuits needing stable clock references
- Communication modules utilizing LVCMOS compatible interfaces
Procurement Notes
Verify the specific frequency tolerance and operating temperature range against your system requirements before procurement. Confirm that the 1.8V supply voltage aligns with your board's power distribution network. Ensure the 2.0x1.6mm footprint matches your PCB layout design. Check for any specific load capacitance requirements if driving high-capacitance traces. Validate the manufacturer's datasheet for the latest revision details regarding electrical characteristics.
Selection Notes
Select this component when a 6.13635 MHz clock source is required with LVCMOS outputs. Consider the 1.8V supply constraint and standby feature for power-sensitive designs. Evaluate the small 4-SMD package size against available PCB real estate. Compare performance metrics such as phase noise and stability against alternative oscillators in the same frequency range. Ensure compatibility with the target application's voltage levels and physical space constraints.
Part Context
Mercury Electronic Ind. Co., Ltd. specializes in frequency-control products including quartz crystals and oscillators. The 18QHTF21 series represents their standard XO lineup offering various frequencies and packages. This model fits within their portfolio of timing solutions for consumer electronics and industrial applications. The company has been a pioneer in the Taiwan crystal industry since 1973, providing reliable timing components.
Replacement Considerations
Direct substitutes may include other 6.13635 MHz LVCMOS oscillators in 2.0x1.6mm packages from different manufacturers. Verify pinout compatibility and electrical specifications before substitution. Alternative part numbers like 18QHTF21 variants with different frequencies are not direct replacements. Consult distributor databases for cross-reference lists ensuring identical form, fit, and function.
