NB2305AI1HDG View Datasheet(PDF) - ON Semiconductor

Part Name

Description

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NB2305AI1HDG

3.3 V Zero Delay Clock Buffer

ON Semiconductor 

NB2305A

3.3 V Zero Delay

Clock Buffer

The NB2305A is a versatile, 3.3 V zero delay buffer designed to

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

out five low−skew clocks. It is available in a 8 pin package.

The −1H version of the NB2305A 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.

Multiple NB2305A 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 NB2305A is available in two different configurations, as shown

in the ordering information table. The NB2305A1 is the base part. The

NB2305Ax1H* is the high drive version of the −1 and its rise and fall

times are much faster than −1 part.

Features

• 15 MHz to 133 MHz Operating Range, Compatible with CPU and

PCI Bus Frequencies

• Zero Input − Output Propagation Delay

• Multiple Low−Skew Outputs

• Output−Output Skew Less than 250 ps

• Device−Device Skew Less than 700 ps

• One Input Drives 5 Outputs

• Less than 200 ps Cycle−to−Cycle Jitter is Compatible with PentiumR

Based Systems

• Available in 8 Pin, 150 mil SOIC Package and 8 Pin TSSOP 4.4 mm

• 3.3 V Operation, Advanced 0.35 m CMOS Technology

• These are Pb−Free Devices

http://onsemi.com

MARKING

DIAGRAMS*

8

1

SOIC−8

D SUFFIX

CASE 751

8

XXXX

ALYW

G

1

8

1

TSSOP−8

DT SUFFIX

CASE 948J

8

XXX

ALYWG

G

1

XXXX = Device Code

A

= Assembly Location

L

= Wafer Lot

Y

= Year

W

= Work Week

G

= Pb−Free Package

(Note: Microdot may be in either location)

*For additional marking information, refer to

Application Note AND8002/D.

ORDERING INFORMATION

See detailed ordering and shipping information in the package

dimensions section on page 6 of this data sheet.

*x = C for Commercial; I for Industrial.

© Semiconductor Components Industries, LLC, 2006

1

November, 2006 − Rev. 5

Publication Order Number:

NB2305A/D

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