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Product Detailed Parameters
- Description：1.234567 MHz XO 1.8V 2.0X1.6 OE
- Series：18QHTF21
- Mfr：Mercury Electronics Ind. Co. Ltd
- Package：Strip
- Base Resonator：Crystal
- Type：XO (Standard)
- Frequency：1.234567 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 18QHTF21-1.234567-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a nominal frequency of 1.234567 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and features an enable/disable control function for power management. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications requiring precise timing signals.
Feature Summary
- LVCMOS output logic for digital interface compatibility
- Integrated enable/disable functionality for power optimization
- Compact 4-SMD no-lead surface mount package design
Applications
- Digital signal processing timing references
- Communication equipment clock sources
- Embedded system microcontroller clocks
Procurement Notes
Verify the specific suffix OE against official Mercury Electronics documentation to confirm pinout and electrical characteristics match your design requirements. Ensure the 1.8V supply voltage aligns with your system's power rails. Confirm the enable/disable control logic levels are compatible with your host controller before finalizing procurement.
Selection Notes
Select this component when a low-voltage 1.8V operation is required alongside LVCMOS outputs. The enable/disable feature makes it suitable for battery-powered or power-sensitive designs. Verify that the 4-SMD footprint fits within your PCB layout constraints and that the operating temperature range meets your environmental specifications.
Part Context
This part belongs to the 18QHTF21 series of standard crystal oscillators from Mercury Electronics. The series offers various frequencies and voltage options. The 18QHTF21 line is designed for general-purpose timing applications, providing stable clock signals in a small form factor suitable for modern consumer electronics and industrial control systems.
Replacement Considerations
Check for direct substitutes with identical frequency, voltage, and package dimensions. Verify that any replacement maintains LVCMOS output and enable/disable functionality. Cross-reference pin assignments to ensure compatibility without circuit modification.
