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Product Detailed Parameters
- Description：74.17 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：74.17 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 18QHTF21-74.170-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 74.17 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and includes enable/disable control capabilities. It is housed in a compact 4-SMD, No Lead package suitable for surface-mount applications.
Feature Summary
- Standard XO configuration with LVCMOS output
- Integrated enable and disable functionality
- Compact 4-SMD no lead package design
Applications
- General clock signal generation
- Digital circuit timing reference
- Embedded system synchronization
Procurement Notes
Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Confirm that the 1.8V supply voltage aligns with your system power rails. Ensure the 4-SMD footprint matches your PCB layout constraints. Cross-reference the datasheet for operating temperature ranges to guarantee reliability under your intended environmental conditions.
Selection Notes
Select this component when a precise 74.17 MHz clock source is required for low-voltage digital systems. The LVCMOS interface ensures compatibility with standard logic families. Consider the enable pin feature if power management or clock gating is necessary for your application. Verify that the no-lead package supports your assembly process and thermal requirements.
Part Context
This part belongs to the 18QHTF21 series of surface-mount oscillators from Mercury Electronics. The series offers various frequencies within the same package form factor. Similar models include variants like 18QHTF21-74.500-OE and 18QHTF21-65.300-OE, which share identical electrical characteristics and physical dimensions but differ in output frequency.
Replacement Considerations
Direct substitutes include other 18QHTF21 series parts with matching 74.17 MHz frequency specifications. Ensure any replacement maintains the 1.8V supply voltage and LVCMOS output type. Verify that the alternative component shares the 4-SMD no lead package dimensions for board compatibility.
