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Product Detailed Parameters
- Description：6.6128 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：6.6128 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)：21mA
- 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 18QHTF21-6.6128-OE is a crystal oscillator manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a nominal frequency of 6.6128 MHz and utilizes LVCMOS output logic. The device requires a supply voltage of 1.8V and features enable/disable functionality. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm. The unit supports an operating temperature range from -40°C to +85°C and maintains a frequency stability of ±50ppm.
Feature Summary
- Integrates enable and disable control functions for power management
- Delivers LVCMOS output signals for digital interface compatibility
- Utilizes a surface-mount 4-SMD no-lead package design
Applications
- General clock signal generation in embedded systems
- Timing reference for low-voltage digital circuits
- Consumer electronics requiring precise frequency control
Procurement Notes
Verify the specific suffix designation against official documentation to confirm electrical characteristics and pinout configuration. Ensure that the selected variant matches the required supply voltage and output logic levels for the target application circuit. Cross-reference the part number with manufacturer specifications to validate frequency tolerance and operating temperature ranges before integration.
Selection Notes
Select this component when a low-profile surface-mount oscillator is required for space-constrained designs. Consider the 1.8V supply requirement and LVCMOS output compatibility with the host system's logic levels. Evaluate the thermal performance within the specified -40°C to +85°C range to ensure reliability under operational conditions.
Part Context
This model belongs to the 18QHTF21 series of quartz crystal oscillators produced by Mercury Electronic Ind. Co., Ltd. The manufacturer specializes in frequency-control products including crystals, filters, and oscillators. This specific part represents a standard XO solution designed for modern electronic applications requiring stable timing references.
Replacement Considerations
Consult official substitution lists for compatible alternatives. Verify that any replacement part matches the 6.6128 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package dimensions.
