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Product Detailed Parameters
- Description：49.25 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：49.25 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)：23mA
- 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 18QHTF21-49.250-OE is a standard crystal oscillator manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a nominal frequency of 49.25 MHz with a frequency stability of 50 ppm. The device utilizes an LVCMOS output signal and functions on a 1.8V supply voltage. Maximum current consumption is specified at 23 mA. The component features enable/disable control capabilities and is housed in a compact 4-SMD, no lead package.
Feature Summary
- LVCMOS compatible output interface
- Integrated enable and disable functionality
- Compact surface-mount packaging
Applications
- High-performance digital timing circuits
- Communication system clock generation
- Embedded processor clock sources
Procurement Notes
Verify the specific ordering suffix against official manufacturer documentation to ensure correct electrical parameters and pin configuration. Confirm that the requested part matches the exact frequency and voltage requirements for your design. Cross-reference the datasheet specifications with your system constraints before finalizing procurement orders.
Selection Notes
Select this component when a precise 49.25 MHz clock source is required with low power consumption. Ensure the application supports the 1.8V logic level and accommodates the 23 mA maximum current draw. Verify that the 4-SMD footprint fits within the available PCB area and aligns with automated assembly requirements.
Part Context
This oscillator belongs to the LIGHT-N-LOK series produced by Mercury Electronic Ind. Co., Ltd., a Taiwan-based supplier specializing in quartz crystals and timing devices. The company has been manufacturing frequency control products since 1973, establishing itself as a pioneer in the industry. This specific model represents their standard XO offerings.
Replacement Considerations
The 18QHTF21-49.250-PD variant shares similar electrical characteristics but differs in package type. Verify mechanical compatibility and pinout alignment before substituting. Consult official cross-reference lists from Mercury Electronics for confirmed equivalent parts.
