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Product Detailed Parameters
- Description：65.8505 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：65.8505 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)：26mA
- 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 18QHTF21-65.8505-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a frequency of 65.8505 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and features a Standby (Power Down) mode for energy management. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications requiring precise timing signals.
Feature Summary
- Supports Standby (Power Down) mode for power efficiency
- Utilizes LVCMOS output logic for digital interface compatibility
- Housed in a 4-SMD, No Lead surface-mount package
Applications
- General purpose clock generation in electronic circuits
- Timing reference for digital systems requiring 1.8V operation
- Applications necessitating low-power standby capabilities
Procurement Notes
Verify the specific ordering suffix to ensure the correct pin configuration and function. Confirm that the PD suffix corresponds to the Standby (Power Down) feature rather than other variants. Cross-reference the frequency specification of 65.8505 MHz with system requirements. Ensure the 1.8V supply voltage aligns with the target circuit design before procurement.
Selection Notes
Select this component when a 65.8505 MHz clock signal is required with LVCMOS compatibility. Consider the 1.8V operating voltage constraint for power supply design. The Standby (Power Down) feature is critical for applications requiring active power management. Verify the 4-SMD package dimensions fit the PCB layout constraints.
Part Context
This model belongs to the Mercury Electronics XO series, which provides standard oscillators for various timing applications. The brand has a history in quartz crystal manufacturing since 1973. This specific part represents a surface-mount solution designed for modern electronics requiring reliable frequency control.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation. Users must verify electrical compatibility, including frequency, voltage, and output logic, when considering alternative components from other manufacturers.
