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Product Detailed Parameters
- Description：74.175 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：74.175 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 18QHTF21-74.175-OE is a standard crystal oscillator manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a frequency of 74.175 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and includes an enable/disable control function. It is housed in a compact 4-SMD, No Lead package, designed for surface-mount applications. This component provides precise timing signals suitable for digital circuits requiring stable clock sources.
Feature Summary
- Provides stable 74.175 MHz clock signal generation
- Features LVCMOS output logic for digital interfacing
- Includes enable/disable control functionality
- Designed for surface-mount assembly with no lead package
Applications
- Digital circuit timing reference
- Communication system clock source
- Microcontroller clock input
- Data processing unit synchronization
Procurement Notes
Verify the exact part number suffix to ensure correct frequency and package configuration. Confirm supply voltage requirements match the target circuit design. Check operating temperature range specifications against environmental conditions. Ensure compatibility with LVCMOS logic levels for signal integrity. Review datasheet for specific electrical characteristics before integration.
Selection Notes
Select this oscillator when a 74.175 MHz frequency is required with LVCMOS outputs. Consider the 1.8V supply voltage constraint for power management. Evaluate the 4-SMD package size for PCB layout constraints. Verify enable/disable pin availability if control is needed. Compare performance against alternative frequencies or packages if requirements differ.
Part Context
Mercury Electronic Ind. Co., Ltd. specializes in frequency control products including quartz crystals and oscillators. The 18QHTF21 series represents their standard XO offerings. These components are designed for reliable timing in various electronic applications. The company has a long history in Taiwan's crystal industry.
Replacement Considerations
Check for direct substitutes from Mercury Electronics with identical frequency and package. Verify equivalent LVCMOS output and 1.8V operation. Ensure compatible enable/disable functionality if required. Cross-reference dimensions for mechanical fit. Consult manufacturer documentation for approved replacements.
