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Product Detailed Parameters
- Description：7.15909 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：7.15909 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：-
Download product information
Overview
The 18QHTF21-7.15909-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronic Ind. Co. Ltd. It operates at a fixed frequency of 7.15909 MHz and utilizes LVCMOS output logic levels. The device supports a supply voltage of 1.8V and includes a standby or power-down function for energy management. It is housed in a compact 4-SMD, no lead package suitable for surface mount applications.
Feature Summary
- LVCMOS output interface
- Integrated standby mode
- Surface mount packaging
Applications
- Digital signal processing systems
- Communication equipment clocking
- Embedded system timing references
Procurement Notes
Verify the exact frequency tolerance and load capacitance requirements against the specific application design before procurement. Confirm that the 1.8V supply voltage aligns with the target circuit's power rails. Ensure the 4-SMD no lead package footprint matches the PCB layout specifications to guarantee proper soldering and mechanical stability during assembly.
Selection Notes
Select this component when a precise 7.15909 MHz reference is required with low voltage operation. The LVCMOS output is suitable for direct interfacing with digital logic families operating at 1.8V. Consider the standby feature if power conservation is critical. Verify compatibility with the host controller's input thresholds and ensure the package size fits within the available board space constraints.
Part Context
Mercury Electronic Ind. Co. Ltd specializes in frequency control products including quartz crystals and oscillators. This model belongs to their standard XO series, designed for general-purpose timing applications. The company has a history of manufacturing quartz-based components, providing reliable frequency stability for electronic circuits requiring precise clock signals.
Replacement Considerations
No public confirmed substitute part numbers are available in the provided documentation. Cross-reference with other 7.15909 MHz LVCMOS oscillators only after verifying pinout, voltage, and package compatibility.
