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Product Detailed Parameters
- Description：70.3125 MHz XO 1.8V 2.0X1.6MM OE
- Series：18QHTF21
- Mfr：Mercury Electronics Ind. Co. Ltd
- Package：Strip
- Base Resonator：Crystal
- Type：XO (Standard)
- Frequency：70.3125 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 18QHTF21-70.3125-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 70.3125 MHz and utilizes LVCMOS output logic levels. The device supports an enable/disable control function for power management. It is designed for operation with a supply voltage of 1.8V. The component is housed in a compact 4-SMD, no lead package, suitable for surface-mount assembly on printed circuit boards.
Feature Summary
- Standard crystal oscillator configuration with LVCMOS output interface
- Integrated enable and disable control functionality
- Compact 4-SMD no-lead surface mount package design
Applications
- General digital signal processing timing references
- Communication equipment clock generation
- Embedded system microcontroller clock sources
Procurement Notes
Verify the specific ordering suffix against manufacturer documentation to confirm exact electrical characteristics and pinout configuration. Ensure that the selected variant matches the required supply voltage and load conditions for the target application. Cross-reference the part number with official datasheets to validate compatibility with existing board designs and signal integrity requirements before finalizing procurement orders.
Selection Notes
Select this component when a precise 70.3125 MHz clock signal is required for low-voltage digital circuits. The 1.8V supply requirement makes it suitable for modern portable or energy-efficient systems. Consider the enable/disable feature if power conservation during idle states is necessary. Evaluate the 4-SMD package dimensions against available PCB real estate constraints.
Part Context
This oscillator belongs to the QHTF series from Mercury Electronic Ind., Co., Ltd, which specializes in quartz-based timing solutions. The series includes various frequencies and voltage options. Mercury Electronics provides components for applications requiring stable frequency control, including crystals, filters, and oscillators. This specific model represents a standard XO variant within their portfolio.
Replacement Considerations
Direct substitutes may include other 70.3125 MHz LVCMOS oscillators in 4-SMD packages from different manufacturers. Verify pin compatibility and voltage tolerance when considering alternatives. Ensure replacement parts meet the same enable/disable control specifications.
