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Product Detailed Parameters
- Description：70.2875 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：70.2875 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 18QHTF21-70.2875-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 70.2875 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and includes an enable/disable control feature. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm.
Feature Summary
- Supports active low enable and disable functionality for power management
- Delivers LVCMOS output logic signals
- Utilizes a surface-mount package without leads
Applications
- General clock signal generation
- Digital circuit timing references
- Embedded system synchronization
Procurement Notes
Verify the specific frequency tolerance and load capacitance requirements against your design specifications before procurement. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the PCB footprint matches the 4-SMD, No Lead package dimensions to guarantee proper soldering and mechanical stability during assembly processes.
Selection Notes
Select this component when a precise 70.2875 MHz reference is required for LVCMOS-compatible digital interfaces. Consider the 1.8V operating voltage and the enable pin utility for systems requiring dynamic power control. Evaluate the small form factor suitability for space-constrained printed circuit board layouts compared to larger oscillator packages.
Part Context
This part belongs to the Mercury Electronics XO series, designed for standard clock applications. The manufacturer specializes in quartz-based frequency control products. The model number indicates a specific frequency variant within the 18QHTF21 family, distinguished by its 70.2875 MHz output and 1.8V operation.
Replacement Considerations
Direct substitutes include other 70.2875 MHz LVCMOS oscillators in similar SMD packages from compatible manufacturers. Verify electrical compatibility regarding voltage levels and output drive strength. Check mechanical footprint alignment to ensure seamless integration into existing designs without rework.
