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Product Detailed Parameters
- Description：1.042 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：1.042 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 18QHTF21-1.042-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fundamental frequency of 1.042 MHz and utilizes LVCMOS output logic. The device requires a 1.8V supply voltage and features an Enable/Disable control function for power management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm. The component supports an operating temperature range of -40°C to 85°C and offers a frequency stability of ±50ppm.
Feature Summary
- Integrates LVCMOS output logic for direct digital interface compatibility
- Includes hardware enable/disable pin for active power state control
- Utilizes leadless SMD packaging for surface-mount assembly efficiency
Applications
- Low-frequency clock generation in embedded systems
- Timing reference sources for microcontroller peripherals
- Real-time clock circuits requiring stable low-frequency oscillation
Procurement Notes
Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply rail is stable within the specified operating range. Ensure the PCB footprint matches the 2.0x1.6mm 4-SMD no-lead package dimensions to prevent soldering defects during assembly.
Selection Notes
Select this component when a precise 1.042 MHz timing source is required with minimal power consumption. The LVCMOS output is suitable for standard digital logic families. Consider the ±50ppm stability limit for applications sensitive to long-term drift. The enable feature allows for dynamic power savings in battery-operated devices.
Part Context
This oscillator belongs to the 18QHTF21 series from Mercury Electronics, designed for general-purpose timing applications. The series offers various frequencies and supply voltages. The 'OE' suffix typically denotes the presence of an enable pin, distinguishing it from variants without control functionality. Mercury Electronics specializes in quartz-based frequency control products.
FAQ
What is the output logic type of the 18QHTF21-1.042-OE?
The output logic type is LVCMOS (Low Voltage Complementary Metal-Oxide-Semiconductor).
Does this oscillator support power saving modes?
Yes, it includes an Enable/Disable function that allows the user to control the active state of the oscillator.
