XRK32308CD-1H datasheet, PDF - EEWORLD Datasheet

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XRK32308CD-1H: DescriptionPLL Based Clock Driver, 32308 Series, 8 True Output(s), 0 Inverted Output(s), PDSO16, 0.150 INCH, SOIC-16; Categorylogic logic; File Size331KB，16 Pages; ManufacturerExar

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XRK32308CD-1H Overview

PLL Based Clock Driver, 32308 Series, 8 True Output(s), 0 Inverted Output(s), PDSO16, 0.150 INCH, SOIC-16

XRK32308CD-1H Parametric

Parameter Name	Attribute value
Is it Rohs certified?	incompatible
Maker	Exar
Parts packaging code	SOIC
package instruction	LSOP, SOP16,.25
Contacts	16
Reach Compliance Code	compliant
series	32308
Input adjustment	MUX
JESD-30 code	R-PDSO-G16
length	9.9 mm
Logic integrated circuit type	PLL BASED CLOCK DRIVER
MaximumI(ol)	0.012 A
Number of functions	1
Number of inverted outputs
Number of terminals	16
Actual output times	8
Maximum operating temperature	70 °C
Minimum operating temperature
Output characteristics	3-STATE
Package body material	PLASTIC/EPOXY
encapsulated code	LSOP
Encapsulate equivalent code	SOP16,.25
Package shape	RECTANGULAR
Package form	SMALL OUTLINE, LOW PROFILE
power supply	3.3 V
Certification status	Not Qualified
Same Edge Skew-Max（tskwd）	0.2 ns
Maximum seat height	1.5 mm
Maximum supply voltage (Vsup)	3.6 V
Minimum supply voltage (Vsup)	3 V
Nominal supply voltage (Vsup)	3.3 V
surface mount	YES
Temperature level	COMMERCIAL
Terminal form	GULL WING
Terminal pitch	1.27 mm
Terminal location	DUAL
width	3.9 mm
minfmax	120 MHz

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PRELIMINARY

FEBRUARY 2007

XRK32308

3.3V ZERO DELAY BUFFER

REV. P1.0.3

GENERAL DESCRIPTION

FUNCTIONAL DESCRIPTION

XRK32308 is a 3.3V Zero Delay Buffer designed to

distribute high-speed clocks in PC, workstation,

datacom, telecom, and other high-performance

applications.

The part has an on-chip PLL which locks to an input

clock presented on the REF pin. The PLL feedback is

required to be driven into the FB pin, and can be

obtained from one of the outputs. The input-to-output

skew is guaranteed to be less than 350 ps, and

output-to-output skew is guaranteed to be less than

200 ps.

XRK32308 has two banks of four outputs each.

These can be controlled by the Select inputs as

shown in Table 2, “Select Input Decoding,” on page 2.

If all output clocks are not required, Bank B can be

three-stated. The select inputs also allow the input

clock to be directly applied to the output for chip and

system testing purposes.

Multiple XRK32308 devices can accept the same

input clock and distribute it in a system. In this case,

the skew between the outputs of two devices is

guaranteed to be less than 700 ps.

XRK32308 devices are available in five different

configurations, as shown in Table 3, “Available

XRK32308 Configurations,” on page 3.

The XRK32308–1 is the base part, where the output

frequencies equal the reference if there is no counter

in the feedback path.

The XRK32308–1H is the high-drive version of the –

1. Rise and fall times on this device are faster.

The XRK32308–2 allows the user to obtain 1X, and

2X or X/2 depending on which Bank sources the FB

signal.

The XRK32308–3 allows the user to obtain 4X and

2X frequencies or 1X and 2X.

The XRK32308–4 enables the user to obtain 2X

clocks on all outputs.

The XRK32308–5H is a high-drive version with REF/

2 on both banks.

FEATURES

•

Zero input-output propagation delay, adjustable by

capacitive load on FB input

•

Multiple configurations, see “Available XRK32308

Configurations” table

•

Multiple low-skew outputs

•

Two banks of four outputs, three-stateable by two

select inputs

•

10-MHz to 120-MHz operating range

•

75ps typical cycle-to-cycle jitter (15pF, 66MHz)

•

Space-saving 16-pin 150-mil SOIC package, 16-pin

TSSOP or 16-pin QFN

•

3.3V operation

•

Industrial and commercial temperature available

IGURE

1. B

LOCK

IAGRAM AND

ONFIGURATION OF THE

XRK32308

PLL

REF

Extra Divider (-3, -4)

Extra Divider (-5H)

MUX

QA0

QA1

QA2

QA3

QA0 REF

QA3

REF

QA0

QA1

GND

QB0

QA3

QA2

GND

QB3

QB2

QA1

VDD

GND

QB0

QA2

VDD

GND

QB3

Select Input

Decoding

QB0

QB1

Extra Divider (-2, -3)

QB2

QB3

QB1

QB2

Exar

Corporation 48720 Kato Road, Fremont CA, 94538

•

(510) 668-7000

•

FAX (510) 668-7017

•

www.exar.com

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