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Product Detailed Parameters
- Description：85.68 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：85.68 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 18QHTF21-85.680-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 85.68 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 2.0 x 1.6 mm.
Feature Summary
- Integrates LVCMOS output logic for standard digital interface compatibility
- Features an enable/disable pin for power management control
- Utilizes quartz technology for stable frequency generation
Applications
- General clock signal generation in electronic circuits
- Embedded systems requiring precise timing references
- Digital communication interfaces
Procurement Notes
Verify the specific operating temperature range and load capacitance requirements against the official datasheet before integration. Confirm that the 1.8V supply voltage aligns with the target system's power rails. Ensure the 4-SMD no-lead package footprint matches the PCB design constraints to guarantee proper soldering and mechanical stability during assembly.
Selection Notes
Select this component when a low-voltage 1.8V operation is required alongside a standard LVCMOS output. The small 2.0x1.6 mm form factor makes it suitable for space-constrained designs. Consider the enable/disable functionality if power efficiency during idle states is a priority for the application.
Part Context
This part belongs to the QHTF series of surface-mount oscillators from Mercury Electronics. The series offers various frequencies and voltage options, typically packaged in small SMD footprints. The 'OE' suffix likely denotes specific packaging or tape-and-reel configuration details as per manufacturer standards.
Replacement Considerations
Direct substitutes must match the 85.68 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify pinout compatibility and electrical specifications with alternative manufacturers such as SiTime or other quartz oscillator producers.
