843251AG-04 datasheet, PDF - EEWORLD Datasheet

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843251AG-04: DescriptionClock Generator, 187.5MHz, PDSO8, 4.40 X 3 MM, 0.925 MM HEIGHT, MO-153, TSSOP-8; CategoryThe embedded processor and controller Microcontrollers and processors; File Size312KB，16 Pages; ManufacturerIDT (Integrated Device Technology)

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843251AG-04 Overview

Clock Generator, 187.5MHz, PDSO8, 4.40 X 3 MM, 0.925 MM HEIGHT, MO-153, TSSOP-8

843251AG-04 Parametric

Parameter Name	Attribute value
Is it lead-free?	Contains lead
Is it Rohs certified?	incompatible
Maker	IDT (Integrated Device Technology)
Parts packaging code	TSSOP
package instruction	4.40 X 3 MM, 0.925 MM HEIGHT, MO-153, TSSOP-8
Contacts	8
Reach Compliance Code	not_compliant
ECCN code	EAR99
Is Samacsys	N
JESD-30 code	R-PDSO-G8
JESD-609 code	e0
length	4.4 mm
Humidity sensitivity level	1
Number of terminals	8
Maximum operating temperature	70 °C
Minimum operating temperature
Maximum output clock frequency	187.5 MHz
Package body material	PLASTIC/EPOXY
encapsulated code	TSSOP
Encapsulate equivalent code	TSSOP8,.25
Package shape	RECTANGULAR
Package form	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)	240
power supply	3.3 V
Master clock/crystal nominal frequency	30 MHz
Certification status	Not Qualified
Maximum seat height	1.2 mm
Maximum slew rate	70 mA
Maximum supply voltage	3.465 V
Minimum supply voltage	3.135 V
Nominal supply voltage	3.3 V
surface mount	YES
technology	CMOS
Temperature level	COMMERCIAL
Terminal surface	Tin/Lead (Sn/Pb)
Terminal form	GULL WING
Terminal pitch	0.65 mm
Terminal location	DUAL
Maximum time at peak reflow temperature	20
width	3 mm
uPs/uCs/peripheral integrated circuit type	CLOCK GENERATOR, OTHER
Base Number Matches	1

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FemtoClock

Crystal-to-3.3V LVPECL

Clock Generator

843251-04

DATA SHEET

General Description

The 843251-04 is a 10Gb/12Gb Ethernet Clock Generator. The

843251-04 can synthesize 10 Gigabit Ethernet and 12 Gigabit

Ethernet with a 25MHz crystal. It can also generate SATA and 10Gb

Fibre Channel reference clock frequencies with the appropriate

choice of crystals. The 843251-04 has excellent phase jitter

performance and is packaged in a small 8-pin TSSOP, making it

ideal for use in systems with limited board space.

Features

•

One differential 3.3V LVPECL output

Crystal oscillator interface designed for

18pF parallel resonant crystal

Crystal input frequency range: 19.33MHz – 30MHz

Output frequency range: 145MHz – 187.5MHz

VCO range: 580MHz – 750MHz

RMS phase jitter @ 156.25MHz, (1.875MHz – 20MHz):

0.39ps (typical)

Full 3.3V supply mode

0°C to 70°C ambient operating temperature

Available in lead-free (RoHS 6) package

Configuration Table with 25MHz Crystal

Inputs

Crystal Frequency

(MHz))

Feedback Divide

VCO Frequency

(MHz)

750

625

N Output Divide

Output Frequency

(MHz)

187.5

156.25

Application

12 Gigabit Ethernet

10 Gigabit Ethernet

Configuration Table with Selectable Crystals

Inputs

Crystal Frequency

(MHz))

21.25

25.5

Feedback Divide

VCO Frequency

(MHz)

600

637.5

600

637.5

750

N Output Divide

Output Frequency

(MHz)

150

159.375

150

159.375

187.5

Application

SATA

10 Gigabit Fibre Channel

SATA

10 Gigabit Fibre Channel

12 Gigabit Fibre Channel

Block Diagram

XTAL_IN

Pin Assignment

Phase

Detector

VCO

580MHz-750MHz

OSC

XTAL_OUT

DIV. N

÷4

CCA

XTAL_OUT

XTAL_IN

FREQ_SEL

0 = ÷25

(default)

1 = ÷30

FREQ_SEL

843251-04

8 Lead TSSOP

4.40mm x 3.0mm package body

843251-04 REVISION B 10/26/15

843251AG-04 Related Products

	843251AG-04	843251AG-04T
Description	Clock Generator, 187.5MHz, PDSO8, 4.40 X 3 MM, 0.925 MM HEIGHT, MO-153, TSSOP-8	Clock Generator, 187.5MHz, PDSO8, 4.40 X 3 MM, 0.925 MM HEIGHT, MO-153, TSSOP-8
Is it lead-free?	Contains lead	Contains lead
Is it Rohs certified?	incompatible	incompatible
Maker	IDT (Integrated Device Technology)	IDT (Integrated Device Technology)
Parts packaging code	TSSOP	TSSOP
package instruction	4.40 X 3 MM, 0.925 MM HEIGHT, MO-153, TSSOP-8	4.40 X 3 MM, 0.925 MM HEIGHT, MO-153, TSSOP-8
Contacts	8	8
Reach Compliance Code	not_compliant	not_compliant
ECCN code	EAR99	EAR99
Is Samacsys	N	N
JESD-30 code	R-PDSO-G8	R-PDSO-G8
JESD-609 code	e0	e0
length	4.4 mm	4.4 mm
Humidity sensitivity level	1	1
Number of terminals	8	8
Maximum operating temperature	70 °C	70 °C
Maximum output clock frequency	187.5 MHz	187.5 MHz
Package body material	PLASTIC/EPOXY	PLASTIC/EPOXY
encapsulated code	TSSOP	TSSOP
Encapsulate equivalent code	TSSOP8,.25	TSSOP8,.25
Package shape	RECTANGULAR	RECTANGULAR
Package form	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)	240	240
power supply	3.3 V	3.3 V
Master clock/crystal nominal frequency	30 MHz	30 MHz
Certification status	Not Qualified	Not Qualified
Maximum seat height	1.2 mm	1.2 mm
Maximum slew rate	70 mA	70 mA
Maximum supply voltage	3.465 V	3.465 V
Minimum supply voltage	3.135 V	3.135 V
Nominal supply voltage	3.3 V	3.3 V
surface mount	YES	YES
technology	CMOS	CMOS
Temperature level	COMMERCIAL	COMMERCIAL
Terminal surface	Tin/Lead (Sn/Pb)	Tin/Lead (Sn/Pb)
Terminal form	GULL WING	GULL WING
Terminal pitch	0.65 mm	0.65 mm
Terminal location	DUAL	DUAL
Maximum time at peak reflow temperature	20	20
width	3 mm	3 mm
uPs/uCs/peripheral integrated circuit type	CLOCK GENERATOR, OTHER	CLOCK GENERATOR, OTHER
Base Number Matches	1	1

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