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SIT5000AC-3E-33E0-19.440000X

SIT5000AC-3E-33E0-19.440000X

SiTime
19.44 MHz TCXO LVCMOS Oscillator 3.3V Enable/Disable 4-SMD, No Lead
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Overview

The SIT5000AC-3E-33E0-19.440000X is a 19.44 MHz temperature-compensated MEMS oscillator (TCXO) from SiTime's SiT5000 series. It provides a stable LVCMOS output with +/-5ppm frequency stability across an industrial temperature range of -40C to +85C. This component is designed for applications requiring a precise timing reference in a compact 5.00mm x 3.20mm surface-mount package.

Why Choose This Part

Unlike quartz-based oscillators, this MEMS-based TCXO offers superior reliability and resistance to shock and vibration. The +/-5ppm stability ensures high precision for communication protocols while the 3.3V supply and 4-SMD footprint simplify integration into existing digital designs.

Applications

SONET/SDH Timing
Provides the 19.44 MHz reference clock required for synchronous optical networking equipment.
Industrial Networking
Acts as a stable clock source for Ethernet switches and industrial communication gateways.
Wireless Base Stations
Used in small cells and infrastructure where frequency stability over temperature is critical.
Data Acquisition Systems
Ensures precise sampling intervals for high-speed sensor data logging in harsh environments.

Key Specifications

Type TCXO
Output LVCMOS
Function Enable/Disable
Frequency 19.44 MHz
Mounting Type Surface Mount
Base Resonator MEMS
Package / Case 4-SMD, No Lead
Size / Dimension 0.197" L x 0.126" W (5.00mm x 3.20mm)
Voltage - Supply 3.3V
Frequency Stability +/-5ppm
Height - Seated (Max) 0.031" (0.80mm)
Operating Temperature -20degC ~ 70degC
Current - Supply (Max) 33mA
Supplier Device Package 4-SMD (5x3.2)

Getting Started

To use this oscillator, provide a stable 3.3V supply and bypass the VDD pin with a 0.1uF ceramic capacitor placed as close to the device as possible. The Enable/Disable function on Pin 1 allows for power saving in battery-operated systems by tri-stating the LVCMOS output. No external load capacitors are required beyond the standard trace impedance matching for high-speed signal integrity.

Categories

Clocks & Timing > Crystal Oscillators