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Product Detailed Parameters
- Description：70.313 MHz XO 1.8V 2.0X1.6 MM OE
- Series：18QHTF21
- Mfr：Mercury Electronics Ind. Co. Ltd
- Package：Strip
- Base Resonator：Crystal
- Type：XO (Standard)
- Frequency：70.313 MHz
- Function：Enable/Disable
- 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 18QHTF21-70.313-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronic Ind. Co. Ltd. It operates at a nominal frequency of 70.313 MHz and utilizes an LVCMOS output interface. The device is designed for surface mount applications, featuring a compact 4-SMD, No Lead package configuration. It supports a supply voltage of 1.8V and includes enable/disable functionality for power management. The component is engineered to provide stable clock signals within specified operating temperature ranges, suitable for digital circuit timing requirements.
Feature Summary
- LVCMOS output interface for standard logic compatibility
- Integrated enable/disable control capability
- Compact 4-SMD no lead surface mount package design
Applications
- General purpose digital system clock generation
- Embedded controller timing references
- Communication module synchronization
Procurement Notes
Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply voltage aligns with the system power rails. Ensure the 4-SMD no lead package footprint matches the PCB layout specifications. Check for any specific handling or storage conditions required for quartz-based components in the official datasheet.
Selection Notes
Select this component when a precise 70.313 MHz clock signal is required with low profile surface mount constraints. Consider the 1.8V operating voltage and LVCMOS output levels for compatibility with downstream logic families. Evaluate the enable/disable feature if power conservation during idle states is necessary for the application design.
Part Context
This oscillator belongs to the QHTF series from Mercury Electronic, which offers various hermetic ceramic leadless SMD packages. The series supports frequencies ranging from 1.0 MHz to 200 MHz across different supply voltages. Mercury Electronic is a established manufacturer of quartz crystals and frequency control products with decades of industry experience.
Replacement Considerations
Direct substitutes must match the 70.313 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no lead package. Verify pinout compatibility and electrical characteristics such as phase noise and jitter against the original specification.
