NBC12439
3.3 V/5 V Programmable
PLL Synthesized Clock
Generator
50 MHz to 800 MHz
http://onsemi.com
The NBC12439 is a general purpose, PLL based synthesized clock
source. The VCO will operate over a frequency range of 400 MHz to
800 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. The PLL loop filter is fully
integrated and does not require any external components.
MARKING
DIAGRAMS
1 28
NBC12439
PLCC-28
FN SUFFIX
CASE 776
AWLYYWW
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Best-in-Class Output Jitter Performance,
±20
ps Peak-to-Peak
50 MHz to 800 MHz Programmable Differential PECL Outputs
Fully Integrated Phase-Lock-Loop with Internal Loop Filter
Parallel Interface for Programming Counter and Output Dividers
During Power-Up
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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 Compatible with Motorola MC12439
Power-Down of PECL Outputs (B16)
A
WL
YY
WW
= Assembly Location
= Wafer Lot
= Year
= Work Week
LQFP-32
FA SUFFIX
CASE 873A
32
1
NBC12439
AWLYYWW
ORDERING INFORMATION
Device
NBC12439FN
NBC12439FNR2
NBC12439FA
NBC12439FAR2
Package
PLCC-28
PLCC-28
LQFP-32
LQFP-32
Shipping
37 Units/Rail
500 Tape & Reel
250 Units/Tray
2000 Tape & Reel
©
Semiconductor Components Industries, LLC, 2003
1
May, 2003 - Rev. 2
Publication Order Number:
NBC12439/D
ONSEMI [ ON SEMICONDUCTOR ]
