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Product Detailed Parameters
- Description：12.285 MHz XO 1.8V 2.0X1.6 MM PD
- Series：18QHTF21
- Mfr：Mercury Electronics Ind. Co. Ltd
- Package：Strip
- Base Resonator：Crystal
- Type：XO (Standard)
- Frequency：12.285 MHz
- Function：Standby (Power Down)
- 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)：22mA
- 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 18QHTF21-12.285-PD is a crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 12.285 MHz with an LVCMOS output logic level. The device requires a 1.8V supply voltage and features a Standby (Power Down) function for energy management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm. This component is designed for applications requiring precise timing signals in space-constrained electronic systems.
Feature Summary
- Supports Standby mode for power reduction
- Utilizes LVCMOS output interface
- Compact surface-mount form factor
Applications
- Battery-powered portable devices
- General digital signal processing circuits
- Communication modules requiring stable clock sources
Procurement Notes
Verify the specific frequency tolerance and load capacitance requirements against your circuit design before ordering. Ensure the 1.8V supply rail is stable to maintain oscillator performance. Confirm that the 4-SMD no-lead package footprint matches your PCB layout constraints. Check for any specific handling instructions regarding electrostatic discharge during assembly.
Selection Notes
Select this model when a low-voltage 1.8V operation is required alongside a standard LVCMOS interface. The small 2.0x1.6mm package makes it suitable for high-density board designs. Consider the standby feature if power efficiency is a critical system requirement. Ensure the operating temperature range meets your environmental specifications.
Part Context
This part belongs to the 18QHTF21 series of crystal oscillators from Mercury Electronics. The series offers various frequencies and voltage options within a consistent small outline package. The 'PD' suffix typically indicates the inclusion of a power-down or standby control pin, allowing for active management of power consumption during idle periods.
Replacement Considerations
Direct substitutes must match the 12.285 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify pin compatibility and electrical characteristics before swapping manufacturers.
