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Product Detailed Parameters
- Description：66.38 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：66.38 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 18QHTF21-66.380-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 66.38 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and includes an enable/disable control feature for power management. It is housed in a compact 4-SMD, no lead package with dimensions of 2.0mm x 1.6mm. The component supports a standby function for power down operations.
Feature Summary
- Supports LVCMOS output logic for digital interface compatibility
- Includes enable/disable pin for active power management
- Utilizes a standard crystal base resonator for frequency stability
Applications
- Digital signal processing systems requiring precise clock timing
- Communication equipment utilizing standard frequency references
- Embedded systems with low voltage power constraints
Procurement Notes
Verify the specific ordering suffix to ensure correct output configuration and tolerance specifications. Confirm that the 1.8V supply requirement aligns with the target system design. Check package dimensions against PCB footprint requirements to ensure proper mechanical fit during assembly.
Selection Notes
Select this component when a 66.38 MHz reference is required for LVCMOS compatible circuits. Ensure the design accommodates the 1.8V operating voltage range. Consider the enable/disable functionality if power efficiency during idle states is a critical design parameter for the application.
Part Context
This model belongs to the 18QHTF21 series from Mercury Electronics, which focuses on small form factor oscillators. The series typically offers various frequencies within a standardized 2.0x1.6mm SMD package. These components are designed for applications demanding reliable frequency generation in space-constrained electronic devices.
Replacement Considerations
Direct substitutes may include other 66.38 MHz XO models from Mercury Electronics with identical pinouts and electrical characteristics. Verify that any replacement maintains the LVCMOS output type and 1.8V supply voltage to ensure circuit compatibility.
