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Product Detailed Parameters
- Description：1.1388 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：1.1388 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 18QHTF21-1.1388-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a nominal frequency of 1.1388 MHz and utilizes LVCMOS output logic. The device requires a 1.8V supply voltage and features an Enable/Disable control function 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 an operating temperature range of -40°C to 85°C and offers a frequency stability of ±50ppm.
Feature Summary
- LVCMOS output logic compatible with standard digital interfaces
- Integrated enable/disable control pin for active power management
- Compact 4-SMD no-lead surface mount package design
Applications
- General clock signal generation in embedded systems
- Timing reference for low-frequency digital circuits
- Consumer electronics requiring precise timekeeping
Procurement Notes
Verify the specific suffix against official datasheets to confirm electrical characteristics and pinout configuration. Ensure the selected variant matches the required supply voltage and output logic levels for the target application circuit. Cross-reference part numbers with manufacturer documentation to avoid substitution errors.
Selection Notes
Select this component when a stable 1.1388 MHz timing source is required within a limited board space. Consider the 1.8V supply requirement and LVCMOS compatibility with downstream logic families. Evaluate the thermal performance within the specified -40°C to 85°C range for environmental suitability.
Part Context
This oscillator belongs to the 18QHTF21 series from Mercury Electronic Ind. Co., Ltd, which specializes in quartz crystal and oscillator products. The series provides various frequency options in a standardized small footprint, catering to modern electronic designs that demand high reliability and compact form factors.
Replacement Considerations
Consult official cross-reference lists for direct substitutes. Verify that any alternative maintains identical frequency, voltage, package, and logic output specifications.
