873990AYLFT datasheet, PDF - EEWORLD Datasheet

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873990AYLFT: DescriptionTQFP-52, Reel; CategoryMicrocontrollers and processors The clock generator; File Size156KB，17 Pages; ManufacturerIDT (Integrated Device Technology); Environmental Compliance

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TQFP-52, Reel

873990AYLFT Parametric

Parameter Name	Attribute value
Brand Name	Integrated Device Technology
Is it lead-free?	Lead free
Is it Rohs certified?	conform to
Maker	IDT (Integrated Device Technology)
Parts packaging code	TQFP
package instruction	10 X 10 MM, 1.40 MM HEIGHT, ROHS COMPLIANT, MS-026BCC, LQFP-52
Contacts	52
Manufacturer packaging code	PPG52
Reach Compliance Code	compliant
ECCN code	EAR99
Is Samacsys	N
JESD-30 code	S-PQFP-G52
JESD-609 code	e3
length	10 mm
Humidity sensitivity level	3
Number of terminals	52
Maximum operating temperature	70 °C
Minimum operating temperature
Maximum output clock frequency	400 MHz
Package body material	PLASTIC/EPOXY
encapsulated code	LQFP
Encapsulate equivalent code	QFP52,.47SQ
Package shape	SQUARE
Package form	FLATPACK, LOW PROFILE
Peak Reflow Temperature (Celsius)	260
power supply	3.3 V
Master clock/crystal nominal frequency	25 MHz
Certification status	Not Qualified
Maximum seat height	1.6 mm
Maximum slew rate	150 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	Matte Tin (Sn) - annealed
Terminal form	GULL WING
Terminal pitch	0.65 mm
Terminal location	QUAD
Maximum time at peak reflow temperature	NOT SPECIFIED
width	10 mm
uPs/uCs/peripheral integrated circuit type	CLOCK GENERATOR, OTHER
Base Number Matches	1

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ICS873990

OLTAGE

, LVCMOS/

RYSTAL

-LVPECL/ECL C

LOCK

ENERATOR

ENERAL

ESCRIPTION

The ICS873990 is a low voltage, low skew, 3.3V LVPECL/

ECL Clock Generator. The ICS873990 has two selectable

clock inputs. The XTAL1 and XTAL2 are used to interface to

a crystal and the TEST_CLK pin can accept a LVCMOS or

LVTTL input. This device has a fully integrated PLL along

with frequency configurable outputs. An external feedback

input and output regenerates clocks with “zero delay”.

The four independent banks of outputs each have their own

output dividers, which allow the device to generate a

multitude of different bank frequency ratios and output-to-

input frequency ratios. The output frequency range is 25MHz

to 400MHz and the input frequency range is 6.25MHz to

125MHz. The PLL_SEL input can be used to bypass the

PLL for test and system debug purposes. In bypass mode,

the input clock is routed around the PLL and into the

internal output dividers.

The ICS873990 also has a SYNC output which can be used

for system synchronization purposes. It monitors Bank A

and Bank C outputs for coincident rising edges and signals

a pulse per the timing diagrams in this data sheet. This

feature is used primarily in applications where Bank A and

Bank C are

running at different frequencies, and is particularly useful

when they are running at non-integer multiples of each

other.

Example Applications:

1. Line Card Multiplier: Multiply 19.44MHz from a back-plane

to 77.76MHz on the line card ASIC and Serdes.

2. Zero Delay Buffer: Fan out up to thirteen 100MHz copies

from a reference clock to multiple processing units on an

embedded system.

nQB3

QB3

CCO

nQA0

QA0

nQA1

QA1

nQA2

QA2

nQA3

QA3

SYNC_SEL

VCO_SEL

EATURES

•

14 differential LVPECL outputs

•

Selectable crystal oscillator interface or TEST_CLK inputs

•

TEST_CLK accepts the following input levels:

LVCMOS, LVTTL

•

Output frequency: 400MHz (maximum)

•

Crystal input frequency range: 10MHz to 25MHz

•

VCO range: 200MHz to 800MHz

•

Output skew: 250ps (maximum)

•

Cycle-to-cyle jitter: ±50ps (typical)

•

LVPECL mode operating voltage supply range:

= 3.135V to 3.465V, V

= 0V

•

ECL mode operating voltage supply range:

= 0V, V

= -3.465V to -3.135V

•

0°C to 70°C ambient operating temperature

•

Industrial temperature available upon request

•

Lead-Free package fully RoHS compliant

SSIGNMENT

FSEL0

FSEL1

FSEL2

39 38 37 36 35 34 33 32 31 30 29 28 27

FSEL3

nQC2

nQB2

nQB1

nQB0

CCO

QC2

QB2

QB1

QB0

QC1

nQC1

QC0

nQC0

CCO

QD1

nQD1

QD0

nQD0

CCO

QFB

nQFB

CCA

ICS873990

2 3

PLL_EN

REF_SEL

FSEL_FB2

FSEL_FB1

7 8 9 10 11 12 13

FSEL_FB0

XTAL_OUT

TEST_CLK

EXT_FB

nEXT_FB

XTAL_IN

52-Lead LQFP

10mm x 10mm x 1.4mm package body

Y package

Top View

873990AY

www.idt.com

REV. B JULY 25, 2010

873990AYLFT Related Products

	873990AYLFT	873990AYLF
Description	TQFP-52, Reel	TQFP-52, Tray
Brand Name	Integrated Device Technology	Integrated Device Technology
Is it lead-free?	Lead free	Lead free
Is it Rohs certified?	conform to	conform to
Parts packaging code	TQFP	TQFP
package instruction	10 X 10 MM, 1.40 MM HEIGHT, ROHS COMPLIANT, MS-026BCC, LQFP-52	10 X 10 MM, 1.40 MM HEIGHT, ROHS COMPLIANT, MS-026BCC, LQFP-52
Contacts	52	52
Manufacturer packaging code	PPG52	PPG52
Reach Compliance Code	compliant	compliant
ECCN code	EAR99	EAR99
Is Samacsys	N	N
JESD-30 code	S-PQFP-G52	S-PQFP-G52
JESD-609 code	e3	e3
length	10 mm	10 mm
Humidity sensitivity level	3	3
Number of terminals	52	52
Maximum operating temperature	70 °C	70 °C
Maximum output clock frequency	400 MHz	400 MHz
Package body material	PLASTIC/EPOXY	PLASTIC/EPOXY
encapsulated code	LQFP	LQFP
Encapsulate equivalent code	QFP52,.47SQ	QFP52,.47SQ
Package shape	SQUARE	SQUARE
Package form	FLATPACK, LOW PROFILE	FLATPACK, LOW PROFILE
Peak Reflow Temperature (Celsius)	260	260
power supply	3.3 V	3.3 V
Master clock/crystal nominal frequency	25 MHz	25 MHz
Certification status	Not Qualified	Not Qualified
Maximum seat height	1.6 mm	1.6 mm
Maximum slew rate	150 mA	150 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	Matte Tin (Sn) - annealed	Matte Tin (Sn) - annealed
Terminal form	GULL WING	GULL WING
Terminal pitch	0.65 mm	0.65 mm
Terminal location	QUAD	QUAD
Maximum time at peak reflow temperature	NOT SPECIFIED	NOT SPECIFIED
width	10 mm	10 mm
uPs/uCs/peripheral integrated circuit type	CLOCK GENERATOR, OTHER	CLOCK GENERATOR, OTHER
Base Number Matches	1	1

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