© Semiconductor Components Industries, LLC, 2006

November, 2006 − Rev. 4

1

Publication Order Number:

NB2309A/D

NB2309A

3.3 V Zero Delay

Clock Buffer

The NB2309A is a versatile, 3.3 V zero delay buffer designed to

distribute high−speed clocks. It accepts one reference input and drives

out nine low−skew clocks. It is available in a 16 pin package.

The −1H version of the NB2309A operates at up to 133 MHz, and

has higher drive than the −1 devices. All parts have on−chip PLL’s that

lock to an input clock on the REF pin. The PLL feedback is on−chip

and is obtained from the CLKOUT pad.

The NB2309A has two banks of four outputs each, which can be

controlled by the Select inputs as shown in the Select Input Decoding

Table. If all the 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 outputs for chip and system testing purposes.

Multiple NB2309A devices can accept the same input clock and

distribute it. In this case the skew between the outputs of the two

devices is guaranteed to be less than 700 ps.

All outputs have less than 200 ps of cycle−to−cycle jitter. The input

and output propagation delay is guaranteed to be less than 350 ps, and

the output to output skew is guaranteed to be less than 250 ps.

The NB2309A is available in two different configurations, as shown

in the ordering information table. The NB2309A1 is the base part. The

NB2309Ax1H* is the high drive version of the −1 and its rise and fall

times are much faster than −1 part.

Features

PCI Bus Frequencies

Based Systems

*x = C for Commercial; I for Industrial.

**For additional information on our Pb−Free strategy and soldering details,

please download the ON Semiconductor Soldering and Mounting Techniques

Reference Manual, SOLDERRM/D.

MARKING

DIAGRAMS*

XXXX

= Device Code

A

= Assembly Location

WL, L

= Wafer Lot

Y

= Year

W, WW = Work Week

G or G = Pb−Free Package

*For additional marking information, refer to

Application Note AND8002/D.

See detailed ordering and shipping information in the package

dimensions section on page 7 of this data sheet.

ORDERING INFORMATION

http://onsemi.com

TSSOP−16

DT SUFFIX

CASE 948F

SOIC−16

D SUFFIX

CASE 751B

1

16

1

16

1

16

1

16

XXXX

XXXX

ALYWG

G

XXXXXXXXG

AWLYWW