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Product Detailed Parameters
- Description：66.486 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：66.486 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 18QHTF21-66.486-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 66.486 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 2.0x1.6 mm.
Feature Summary
- LVCMOS output logic for digital interface compatibility
- Integrated enable and disable control functionality
- Compact surface-mount design suitable for space-constrained applications
Applications
- General clock signal generation in electronic circuits
- Timing reference for digital systems requiring 66.486 MHz stability
- Embedded devices utilizing LVCMOS compatible interfaces
Procurement Notes
Verify the specific ordering suffix to ensure the correct frequency and package variant matches the design requirements. Confirm that the 1.8V supply voltage aligns with the target system power rails. Ensure the LVCMOS output type is compatible with the receiving logic inputs. Check the enable/disable pin configuration against the schematic to guarantee proper control integration during assembly.
Selection Notes
Select this component when a precise 66.486 MHz clock source is required within a small footprint. The 1.8V operating voltage makes it suitable for low-power digital designs. The LVCMOS output ensures direct interfacing with standard logic families without additional level shifting. Consider the enable/disable feature if power management or clock gating is necessary for the application.
Part Context
This part belongs to the Mercury Electronics XO series, which offers various frequencies and packages. The 18QHTF21 series specifically targets applications needing standard oscillators with enable controls. Mercury Electronics has a long history in quartz product manufacturing, providing reliable frequency control solutions.
Replacement Considerations
Direct substitutes must match the 66.486 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify pinout compatibility and electrical specifications before substitution.
