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Product Detailed Parameters
- Description：77.6 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：77.6 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 18QHTF21-77.600-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 77.6 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and features an enable/disable control function. It is housed in a compact 4-SMD, No Lead package with dimensions corresponding to the SMD2016 form factor.
Feature Summary
- Supports LVCMOS output logic for digital interface compatibility
- Includes enable/disable functionality for power management
- Utilizes a surface-mount 4-SMD no lead package design
Applications
- General clock signal generation in electronic circuits
- Timing reference for digital systems requiring 77.6 MHz
- Embedded devices utilizing LVCMOS interfaces
Procurement Notes
Verify the specific part number 18QHTF21-77.600-OE against official Mercury Electronics documentation to confirm electrical parameters and package details. Ensure compatibility with system voltage requirements and thermal specifications before integration. Cross-reference manufacturer datasheets for accurate pinout and operational limits.
Selection Notes
Select this component when a 77.6 MHz clock source with LVCMOS outputs is required. Consider the 1.8V supply constraint and the need for enable/disable control. The small SMD2016 footprint suits space-constrained designs. Verify that the operating temperature range meets application environmental conditions.
Part Context
This oscillator belongs to the 18QHTF21 series from Mercury Electronics, which offers various frequencies within the same physical package. The series includes models such as 18QHTF21-76.000-OE and 18QHTF21-57.7617-OE, sharing similar packaging and logic characteristics while differing in output frequency.
Replacement Considerations
Direct substitutes include other 18QHTF21 series variants like 18QHTF21-77.600-PD if frequency tolerance allows. Alternative manufacturers producing 2016-sized LVCMOS oscillators at 77.6 MHz may be considered, provided electrical specifications match exactly.
