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Product Detailed Parameters
- Description：84.7739 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：84.7739 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 18QHTF21-84.7739-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 84.7739 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 2.0x1.6mm.
Feature Summary
- Integrates enable/disable functionality for power management
- Utilizes LVCMOS output logic for digital interface compatibility
- Features a compact surface-mount package design
Applications
- General clock signal generation
- Digital system timing references
- Embedded electronics applications
Procurement Notes
Verify the specific suffix OE against official Mercury Electronics documentation to confirm the enable pin configuration and electrical characteristics. Ensure the operating temperature range and load requirements match the target circuit design before procurement. Cross-reference the part number with authorized distributors to validate authenticity and current availability status.
Selection Notes
Select this component when a low-voltage 1.8V operation is required alongside precise frequency stability. The enable feature allows for dynamic power control in battery-operated devices. Consider the small form factor for space-constrained PCB layouts. Verify that the LVCMOS output levels are compatible with the receiving logic inputs of the connected microcontroller or FPGA.
Part Context
This oscillator belongs to the Mercury Electronics SMD oscillator series, which includes various frequencies and packages. The 18QHTF21 series typically denotes a specific size and performance class within their quartz-based product line. Similar parts may include different frequencies or voltage levels, such as the 18QHTF21-86.8875-OE.
Replacement Considerations
Direct substitutes must match the 84.7739 MHz frequency, 1.8V supply, LVCMOS output, and 2.0x1.6mm package. Check for equivalent enable/disable functionality. Other manufacturers' components require careful verification of pinout and electrical specifications.
