© Semiconductor Components Industries, LLC, 2009
January, 2009 − Rev. 13
1 Publication Order Number:
NBC12429/D
NBC12429, NBC12429A
3.3V/5V Programmable PLL
Synthesized Clock
Generator
25 MHz to 400 MHz
Description
The NBC12429 and NBC12429A are general purpose,
Phase−Lock−Loop (PLL) based synthesized clock sources. The VCO
will operate over a frequency range of 200 MHz to 400 MHz. The
VCO frequency is sent to the N−output divider, where it can be
configured to provide division ratios of 1, 2, 4, or 8. The VCO and
output frequency can be programmed using the parallel or serial
interfaces to the configuration logic. Output frequency steps of
125 kHz, 250 kHz, 500 kHz, or 1.0 MHz can be achieved using a
16 MHz crystal, depending on the output dividers. The PLL loop filter
is fully integrated and does not require any external components.
Features
• Best−in−Class Output Jitter Performance, ±20 ps Peak−to−Peak
• 25 MHz to 400 MHz Programmable Differential PECL Outputs
• Fully Integrated Phase−Lock−Loop with Internal Loop Filter
• Parallel Interface for Programming Counter and Output Dividers
During Powerup
• Minimal Frequency Overshoot
• Serial 3−Wire Programming Interface
• Crystal Oscillator Interface
• Operating Range: V
CC
= 3.135 V to 5.25 V
• CMOS and TTL Compatible Control Inputs
• Pin and Function Compatible with Motorola MC12429 and
MPC9229
• 0°C to 70°C Ambient Operating Temperature (NBC12429)
• −40°C to 85°C Ambient Operating Temperature (NBC12429A)
• Pb−Free Packages are Available
MARKING
DIAGRAMS
PLCC−28
FN SUFFIX
CASE 776
NBC12429xG
AWLYYWW
128
See detailed ordering and shipping information in the package
dimensions section on page 18 of this data sheet.
ORDERING INFORMATION
http://onsemi.com
LQFP−32
FA SUFFIX
CASE 873A
NBC12
429x
AWLYYWWG
QFN32
MN SUFFIX
CASE 488AM
32
1
NBC12
429x
AWLYYWWG
G
1
x = Blank or A
A = Assembly Location
WL, L = Wafer Lot
YY, Y = Year
WW, W = Work Week
G or G = Pb−Free Package
(Note: Microdot may be in either location)
28
1
