844441DMI-300LF datasheet, PDF

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844441DMI-300LF: DescriptionSOIC-8, Tube; CategoryThe embedded processor and controller Microcontrollers and processors; File Size604KB，16 Pages; ManufacturerIDT (Integrated Device Technology); Environmental Compliance

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844441DMI-300LF Overview

SOIC-8, Tube

844441DMI-300LF Parametric

Parameter Name	Attribute value
Brand Name	Integrated Device Technology
Is it lead-free?	Lead free
Is it Rohs certified?	conform to
Parts packaging code	SOIC
package instruction	SOP, SOP8,.25
Contacts	8
Manufacturer packaging code	DCG8
Reach Compliance Code	compliant
ECCN code	EAR99
JESD-30 code	R-PDSO-G8
JESD-609 code	e3
length	4.9 mm
Humidity sensitivity level	1
Number of terminals	8
Maximum operating temperature	85 °C
Minimum operating temperature	-40 °C
Maximum output clock frequency	300 MHz
Package body material	PLASTIC/EPOXY
encapsulated code	SOP
Encapsulate equivalent code	SOP8,.25
Package shape	RECTANGULAR
Package form	SMALL OUTLINE
Peak Reflow Temperature (Celsius)	260
power supply	2.5 V
Master clock/crystal nominal frequency	25 MHz
Certification status	Not Qualified
Maximum seat height	1.75 mm
Maximum supply voltage	2.625 V
Minimum supply voltage	2.375 V
Nominal supply voltage	2.5 V
surface mount	YES
technology	CMOS
Temperature level	INDUSTRIAL
Terminal surface	Matte Tin (Sn) - annealed
Terminal form	GULL WING
Terminal pitch	1.27 mm
Terminal location	DUAL
Maximum time at peak reflow temperature	30
width	3.9 mm
uPs/uCs/peripheral integrated circuit type	CLOCK GENERATOR, OTHER
Base Number Matches	1

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FemtoClock® SAS/ SATA Clock Generator

Datasheet

844441

General Description

The 844441 is a low jitter, high performance clock generator and a

member of the FemtoClock

family of silicon timing products. The

844441 is designed for use in applications using the SAS and SATA

interconnect. The 844441 uses an external, 25MHz, parallel

resonant crystal to generate four selectable output frequencies:

75MHz, 100MHz, 150MHz, and 300MHz. This silicon based

approach provides excellent frequency stability and reliability. The

844441 features down and center spread spectrum (SSC) clocking

techniques.

Features

•

Designed for use in SAS, SAS-2, and SATA systems

Center (±0.17%) Spread Spectrum Clocking (SSC)

Down (-0.23% or -0.5%) SSC

Better frequency stability than SAW oscillators

One differential 2.5V LVDS output

Crystal oscillator interface designed for 25MHz

= 12pF) frequency

External fundamental crystal frequency ensures high reliability

and low aging

Selectable output frequencies: 75MHz, 100MHz, 150MHz,

300MHz

Output frequency is tunable with external capacitors

RMS phase jitter @ 100MHz, using a 25MHz crystal

(12kHz – 20MHz): 1.1936ps (typical)

2.5V operating supply

-40°C to 85°C ambient operating temperature

Lead-free (RoHS 6) packaging

Applications

•

SAS/SATA Host Bus Adapters

SATA Port Multipliers

SAS I/O Controllers

TapeDrive and HDD Array Controllers

SAS Edge and Fanout Expanders

HDDs and TapeDrives

Disk Storage Enterprise

•

Pin Assignment

Block Diagrams

XTAL_IN

XTAL_OUT

XTAL_IN

SSC_SEL0

SSC_SEL1

GND

25MHz

XTAL

XTAL_OUT

OSC

FemtoClock™

PLL

00 = SSC Off

01 = 0.5% Down-spread

10 = 0.23% Down-spread

11 = 0.5% Center-spread

844441

8-Lead SOIC, 3.90mm x 4.90mm Package

SSC_SEL(1:0)

Pulldown:Pulldown

SSC Output

Control Logic

8-Lead SOIC

nPLL_SEL

Pulldown

GND

XTAL_IN

25MHz

XTAL

XTAL_OUT

OSC

FemtoClock™

PLL

00 = 75MHz

01 = 100MHz

10 = 150MHz

(default)

11 = 300MHz

XTAL_OUT

XTAL_IN

SSC_SEL0

SSC_SEL1

F_SEL(1:0)

SSC_SEL(1:0)

Pullup:Pulldown

Pulldown:Pulldown

Clock Output

Control Logic

F_SEL1

GND

nPLL_SEL

F_SEL0

16-Lead TSSOP

844441

16-Lead TSSOP, 4.4mm x 5.0mm Package

Revison E, November 2, 2016

844441DMI-300LF Related Products

	844441DMI-300LF	844441DMI-75LFT	844441DMI-75LF	844441DMI-100LFT	844441DMI-100LF
Description	SOIC-8, Tube	SOIC-8, Reel	SOIC-8, Tube	SOIC-8, Reel	SOIC-8, Tube
Brand Name	Integrated Device Technology	Integrated Device Technology	Integrated Device Technology	Integrated Device Technology	Integrated Device Technology
Is it lead-free?	Lead free	Lead free	Lead free	Lead free	Lead free
Is it Rohs certified?	conform to	conform to	conform to	conform to	conform to
Parts packaging code	SOIC	SOIC	SOIC	SOIC	SOIC
package instruction	SOP, SOP8,.25	SOP, SOP8,.25	SOP, SOP8,.25	SOP, SOP8,.25	SOP, SOP8,.25
Contacts	8	8	8	8	8
Manufacturer packaging code	DCG8	DCG8	DCG8	DCG8	DCG8
Reach Compliance Code	compliant	compliant	compliant	compliant	compliant
ECCN code	EAR99	EAR99	EAR99	EAR99	EAR99
JESD-30 code	R-PDSO-G8	R-PDSO-G8	R-PDSO-G8	R-PDSO-G8	R-PDSO-G8
JESD-609 code	e3	e3	e3	e3	e3
length	4.9 mm	4.9 mm	4.9 mm	4.9 mm	4.9 mm
Humidity sensitivity level	1	1	1	1	1
Number of terminals	8	8	8	8	8
Maximum operating temperature	85 °C	85 °C	85 °C	85 °C	85 °C
Minimum operating temperature	-40 °C	-40 °C	-40 °C	-40 °C	-40 °C
Maximum output clock frequency	300 MHz	300 MHz	300 MHz	300 MHz	300 MHz
Package body material	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
encapsulated code	SOP	SOP	SOP	SOP	SOP
Encapsulate equivalent code	SOP8,.25	SOP8,.25	SOP8,.25	SOP8,.25	SOP8,.25
Package shape	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR
Package form	SMALL OUTLINE	SMALL OUTLINE	SMALL OUTLINE	SMALL OUTLINE	SMALL OUTLINE
Peak Reflow Temperature (Celsius)	260	260	260	260	260
power supply	2.5 V	2.5 V	2.5 V	2.5 V	2.5 V
Master clock/crystal nominal frequency	25 MHz	25 MHz	25 MHz	25 MHz	25 MHz
Certification status	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified
Maximum seat height	1.75 mm	1.75 mm	1.75 mm	1.75 mm	1.75 mm
Maximum supply voltage	2.625 V	2.625 V	2.625 V	2.625 V	2.625 V
Minimum supply voltage	2.375 V	2.375 V	2.375 V	2.375 V	2.375 V
Nominal supply voltage	2.5 V	2.5 V	2.5 V	2.5 V	2.5 V
surface mount	YES	YES	YES	YES	YES
technology	CMOS	CMOS	CMOS	CMOS	CMOS
Temperature level	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL
Terminal surface	Matte Tin (Sn) - annealed	Matte Tin (Sn) - annealed	Matte Tin (Sn) - annealed	Matte Tin (Sn) - annealed	Matte Tin (Sn) - annealed
Terminal form	GULL WING	GULL WING	GULL WING	GULL WING	GULL WING
Terminal pitch	1.27 mm	1.27 mm	1.27 mm	1.27 mm	1.27 mm
Terminal location	DUAL	DUAL	DUAL	DUAL	DUAL
Maximum time at peak reflow temperature	30	30	30	30	30
width	3.9 mm	3.9 mm	3.9 mm	3.9 mm	3.9 mm
uPs/uCs/peripheral integrated circuit type	CLOCK GENERATOR, OTHER	CLOCK GENERATOR, OTHER	CLOCK GENERATOR, OTHER	CLOCK GENERATOR, OTHER	CLOCK GENERATOR, OTHER
Base Number Matches	1	1	1	-	-

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