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NBC12439A

Features: • 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 Poweru...

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SeekIC No. : 004432739 Detail

NBC12439A: Features: • 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 Inte...

NBC12439A Data Sheet

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Part Number:
NBC12439A
Supply Ability:
5000

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  • 1~5000
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Product Details

Description



Features:

• 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 Powerup
• Minimal Frequency Overshoot
• Serial 3--Wire Programming Interface
• Crystal Oscillator Inputs 10 MHz to 20 MHz
• Operating Range: VCC = 3.135 V to 5.25 V
• CMOS and TTL Compatible Control Inputs
• Pin and Function Compatible with Motorola MC12439 and MPC9239
• Powerdown of PECL Outputs (÷16)
• 0°C to 70°C Ambient Operating Temperature (NBC12439)
• --40°C to 85°C Ambient Operating Temperature (NBC12439A)
• Pb--Free Packages are Available


Pinout

Connection Diagram


Specifications

Symbol Parameter Condition 1 Condition 2 Rating Unit
VCC Positive Supply GND = 0 V   6 V
VI Input Voltage GND = 0 V VIVCC 6 V
Iout Output Current Continuous
Surge		   50
100		 mA
mA
TA Operating Temperature Range
NBC12429
NBC12429A		     0 to 70
-40 to +85		 °C
Tstg Storage Temperature Range     -65 to +150 °C
JA Thermal Resistance (Junction--to--Ambient) 0 lfpm
500 lfpm		 PLCC--28
PLCC--28		 63.5
43.5		 °C/W
°C/W
JC Thermal Resistance (Junction--to--Case) Standard Board PLCC--28 22 to 26 °C/W
JA Thermal Resistance (Junction--to--Ambient) 0 lfpm
500 lfpm		 LQFP--32
LQFP--32		 80
55		 °C/W
°C/W
JC Thermal Resistance (Junction--to--Case) Standard Board LQFP--32 12 to 17 °C/W
JA Thermal Resistance (Junction--to--Ambient) 0 lfpm
500 lfpm		 QFN--32
QFN--32		 31
27		 °C/W
°C/W
JC Thermal Resistance (Junction--to--Case) 2S2P QFN--32 12 °C/W
Tsol Wave Solder
Pb
Pb--Free		 <3 sec @ 248°C
<3 sec @ 260°C		   265
265		 °C

Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended OperatingConditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability.




Description

The NBC12439 and NBC12439A are general purpose, PLL based synthesized clock sources. 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. Output frequency steps of 16 MHz, 8 MHz, 4 MHz, or 2 MHz can be achieved using a 16 MHz crystal, depending on the output divider settings. The NBC12439 and NBC12439A PLL loop filter is fully integrated and does not require any external components.




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