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Product Detailed Parameters
- Description：49.3833 MHz XO 1.8V 2.0X1.6MM OE
- Series：18QHTF21
- Mfr：Mercury Electronics Ind. Co. Ltd
- Package：Strip
- Base Resonator：Crystal
- Type：XO (Standard)
- Frequency：49.3833 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 18QHTF21-49.3833-OE is a fixed-frequency crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 49.3833 MHz and utilizes LVCMOS output logic. The device is designed for low-voltage applications, featuring a supply voltage of 1.8V. It is housed in a compact hermetic ceramic leadless surface-mount package with dimensions of 2.0mm by 1.6mm. This component belongs to the QHTF series, which offers various package options and supply voltages within a frequency range of 1.0 MHz to 200 MHz.
Feature Summary
- Hermetic ceramic leadless surface-mount construction
- LVCMOS output logic compatibility
- Low voltage operation at 1.8V
Applications
- General clock signal generation
- Digital circuit timing reference
- Embedded system synchronization
Procurement Notes
Verify the specific ordering suffix against official manufacturer documentation to ensure correct frequency and voltage specifications. Confirm that the required operating temperature range aligns with the standard industrial ratings provided in the datasheet. Ensure the footprint matches the 2.0x1.6mm package dimensions for proper PCB layout integration.
Selection Notes
Select this model when a precise 49.3833 MHz clock source is required for digital systems. Consider the 1.8V supply requirement for power budgeting. The small 2.0x1.6mm package is suitable for space-constrained designs. Verify compatibility with LVCMOS interfaces on the target microcontroller or FPGA.
Part Context
This part is part of the QHTF series from Mercury Electronic, which provides quartz-based timing solutions. The series includes various hermetic ceramic packages and supports frequencies up to 200 MHz. Mercury Electronic specializes in frequency control products including crystals, oscillators, and filters, established as a pioneer in the Taiwan crystal industry since 1973.
Replacement Considerations
Check for direct substitutes within the same QHTF family with identical pinout and electrical characteristics. Cross-reference with other manufacturers offering similar hermetic ceramic XO oscillators at 49.3833 MHz with 1.8V supply and LVCMOS output.
