ChipApex | Global Electronic Components Supplier
SEARCH
Search Product
Search Post
— IC芯片 | 连接器 | 传感器 | 被动器件 —
Consult the customer manager about the wholesale price.
consultation hotline：86-132-6715-2157
email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.
Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.
Product Detailed Parameters
- Description：1.77776 MHz XO 1.8V 2.0X1.6MM PD
- Series：18QHTF21
- Mfr：Mercury Electronics Ind. Co. Ltd
- Package：Strip
- Base Resonator：Crystal
- Type：XO (Standard)
- Frequency：1.77776 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)：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：-
Download product information
Overview
The 18QHTF21-1.77776-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 1.77776 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and features a Standby (Power Down) control mode. It is housed in a compact 4-SMD, No Lead package, designed for surface-mount applications requiring precise timing signals.
Feature Summary
- Supports low-voltage operation at 1.8V
- Includes standby power-down functionality
- Provides LVCMOS output signal compatibility
Applications
- General-purpose clock generation
- Digital circuit timing synchronization
- Embedded system clock sources
Procurement Notes
Verify the specific frequency tolerance and load capacitance requirements against your design specifications before procurement. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 4-SMD no-lead package footprint matches your PCB layout constraints to guarantee proper assembly and electrical connectivity.
Selection Notes
Select this component when a low-frequency, low-voltage clock source is required. The LVCMOS interface ensures compatibility with standard digital logic families. Consider the standby feature if power management during idle states is critical. Verify that the operating temperature range meets environmental conditions.
Part Context
This part belongs to the Mercury Electronics XO series, which offers various frequencies and voltage options. The 18QHTF21 designation indicates a specific form factor and performance tier within their oscillator portfolio. Similar parts in the series may differ in frequency or voltage but share the same package and logic type.
Replacement Considerations
Direct substitutes must match the 1.77776 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Check manufacturer datasheets for pin-compatible alternatives with identical electrical characteristics to ensure seamless integration without redesigning the circuit board.
