nb2305a ON Semiconductor, nb2305a Datasheet

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nb2305a

Manufacturer Part Number
nb2305a
Description
3.3 V Zero Delay Clock Buffer
Manufacturer
ON Semiconductor
Datasheet

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NB2305A
3.3 V Zero Delay
Clock Buffer
distribute high-speed clocks. It accepts one reference input and drives
out five low-skew clocks. It is available in a 8 pin package.
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.
distribute it. In this case the skew between the outputs of the two
devices is guaranteed to be less than 700 ps.
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.
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
*x = I for Industrial.
© Semiconductor Components Industries, LLC, 2007
November, 2007 - Rev. 7
The NB2305A is a versatile, 3.3 V zero delay buffer designed to
The -1H version of the NB2305A operates at up to 133 MHz, and
Multiple NB2305A devices can accept the same input clock and
All outputs have less than 200 ps of cycle-to-cycle jitter. The input
The NB2305A is available in two different configurations, as shown
PCI Bus Frequencies
Based Systems
15 MHz to 133 MHz Operating Range, Compatible with CPU and
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
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
Industrial Temperature Range
These are Pb-Free Devices
1
*For additional marking information, refer to
See detailed ordering and shipping information in the package
dimensions section on page 6 of this data sheet.
Application Note AND8002/D.
8
CASE 751
D SUFFIX
CASE 948S
8
DT SUFFIX
SOIC-8
TSSOP-8
ORDERING INFORMATION
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A
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1
http://onsemi.com
1
= Device Code
= Assembly Location
= Wafer Lot
= Year
= Work Week
= Pb-Free Package
Publication Order Number:
DIAGRAMS*
8
1
8
1
MARKING
XXXX
ALYW
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NB2305A/D

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nb2305a Summary of contents

Page 1

... 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 • ...

Page 2

... DD 7 CLK4 (Note 2) Buffered clock output. 8 CLKOUT (Note 2) Buffered clock output, internal feedback on this pin. 1. Weak pulldown. 2. Weak pulldown on all outputs. NB2305A CLKOUT 1 REF CLK1 CLK2 2 NB2305A CLK2 CLK1 3 CLK3 GND 4 CLK4 Figure 2. Pin Configuration Description http://onsemi.com 2 8 CLKOUT 7 CLK4 ...

Page 3

... IL I Input HIGH Current IH V Output LOW Voltage OL V Output HIGH Voltage OH I Supply Current (Commercial Temp Supply Current (Industrial Temp REF input has a threshold voltage of V NB2305A Min -0.5 -0.5 -0.5 -65 Description Industrial Test Conditions (-1) ...

Page 4

... Delay, REF Rising Edge to CLKOUT 6 Rising Edge t Device-to-Device Skew 7 t Cycle-to-Cycle Jitter J t PLL Lock Time LOCK 4. All parameters specified with loaded outputs. NB2305A (Note 4) Test Conditions 30 pF load 10 pF load (-1, -1H) Measured at 1 66.67 MHz OUT (-1H) < 50 MHz (-1) Measured between 0.8 V and 2.0 V ...

Page 5

... OUTPUT t 5 Figure 5. Output - Output Skew CLKOUT, Device 1 CLKOUT, Device 2 NB2305A For applications requiring zero input-output delay, all outputs, including CLKOUT, must be equally loaded. Even if CLKOUT is not used, it must have a capacitive load equal to that on other outputs, for obtaining zero-input-output delay. SWITCHING WAVEFORMS 2 ...

Page 6

... NB2305AI1DR2G 5I1 NB2305AI1HDG 5I1H NB2305AI1HDR2G 5I1H NB2305AI1DTG 5I1 NB2305AI1DTR2G 5I1 NB2305AI1HDTG 5IH NB2305AI1HDTR2G 5IH †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D. NB2305A TEST CIRCUITS 0 LOAD ...

Page 7

... G C SEATING PLANE - 0.25 (0.010 *For additional information on our Pb-Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. NB2305A PACKAGE DIMENSIONS SOIC-8 NB CASE 751-07 ISSUE 0.10 (0.004 SOLDERING FOOTPRINT* 1 ...

Page 8

... F 0.50 0.70 0.020 0.028 G 0.65 BSC 0.026 BSC J 0.09 0.20 0.004 0.008 J1 0.09 0.16 0.004 0.006 K 0.19 0.30 0.007 0.012 K1 0.19 0.25 0.007 0.010 L 6.40 BSC 0.252 BSC --- 2.20 --- 0.087 P1 --- 3.20 --- 0.126 ON Semiconductor Website: www.onsemi.com Order Literature: http://www.onsemi.com/orderlit For additional information, please contact your local Sales Representative NB2305A/D ...

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