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Product Detailed Parameters
- Description：6.56 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：6.56 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)：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：-
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Overview
The 18QHTF21-6.560-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 6.56 MHz with an LVCMOS output logic level. The device requires a 1.8V supply voltage and supports enable/disable functionality for power management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm. The unit maintains a frequency stability of ±50ppm and functions within an operating temperature range of -40°C to 85°C.
Feature Summary
- Supports LVCMOS output logic for digital interface compatibility
- Includes enable/disable control function for power optimization
- Utilizes a leadless SMD package for surface-mount assembly
Applications
- General-purpose clock signal generation
- Embedded system timing references
- Consumer electronics circuit boards
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's power rails. Ensure the PCB footprint matches the 2.0x1.6mm 4-SMD no-lead package specifications to prevent mounting issues during assembly.
Selection Notes
Select this component when a low-voltage, small-footprint oscillator is required for applications needing precise timing at 6.56 MHz. The enable/disable feature makes it suitable for battery-powered devices requiring power conservation. Consider the ±50ppm stability limit for applications sensitive to long-term drift.
Part Context
This part belongs to the 18QHTF21 series of standard XO oscillators from Mercury Electronic Ind. Co., Ltd. The series offers various frequencies and supply voltages, all sharing the same compact 2.0x1.6mm form factor. The 'OE' suffix typically denotes the enable/disable pin configuration available in this product line.
Replacement Considerations
Direct substitutes must match the 6.56 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no-lead package dimensions. Verify equivalent stability and temperature range specifications. Cross-reference with other manufacturers offering similar ultra-small footprint oscillators if availability is constrained.
