NBC12439A PDF даташит
Спецификация NBC12439A изготовлена «ON Semiconductor» и имеет функцию, называемую «Programmable PLL Synthesized Clock Generator». |
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Детали детали
Номер произв | NBC12439A |
Описание | Programmable PLL Synthesized Clock Generator |
Производители | ON Semiconductor |
логотип |
20 Pages
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NBC12439, NBC12439A
3.3V/5V Programmable PLL
Synthesized Clock
Generator
50 MHz to 800 MHz
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 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
• 50 MHz to 800 MHz Programmable Differential PECL Outputs
• Fully Integrated Phase--Lock--Loop with Internal Loop Filter
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• 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
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MARKING
DIAGRAMS
1 28
PLCC--28
FN SUFFIX
CASE 776
NBC12439xG
AWLYYWW
LQFP--32
FA SUFFIX
CASE 873A
NBC12
439x
AWLYYWWG
1 32
QFN32
MN SUFFIX
CASE 488AM
1
NBC12
439x
AWLYYWWG
G
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)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 16 of this data sheet.
© Semiconductor Components Industries, LLC, 2007
February, 2007 -- Rev. 10
1
Publication Order Number:
NBC12439/D
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NBC12439, NBC12439A
XTAL_SEL
FREF_EXT
10--20MHz
OE
S_LOAD
P_LOAD
15
3
4
5
6
28
7
S_DATA
S_CLOCK
27
26
PWR_DOWN +3.3 or 5.0 V
2
÷2
FREF
PHASE
DETECTOR
VCO
POWER
DOWN
XTAL1
OSC
XTAL2
7--BIT ÷ M
COUNTER
÷ 2 400--800
MHz
LATCH
÷N
(1, 2, 4, 8)
LATCH
1
PLL_VCC
+3.3 or 5.0 V
VCC 21, 25
24
23
FOUT
FOUT
20 TEST
0
7--BIT SR
1
0
2--BIT SR
1
LATCH
3--BIT SR
8 ¤ 14
17, 18
7
M[6:0]
2
N[1:0]
Figure 1. Block Diagram (28--Lead PLCC)
22, 19
Table 1. Output Division
N [1:0]
00
01
10
11
Output Division
2
4
8
1
Table 2. XTAL_SEL And OE
Input
0
PWR_DOWN
XTAL_SEL
OE
FOUT
FREF_EXT
Outputs Disabled
1
FOUT ÷ 16
XTAL
Outputs Enabled
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2
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NBC12439, NBC12439A
25 24 23 22 21 20 19
S_CLOCK 26
18 N[1]
S_DATA 27
17 N[0]
S_LOAD 28
16 NC
PLL_VCC 1
15 XTAL_SEL
PWR_DOWN 2
14 M[6]
FREF_EXT 3
13 M[5]
XTAL1 4
5
6
78
12 M[4]
9 10 11
Figure 2. 28--Lead PLCC (Top View)
S_CLOCK
S_DATA
S_LOAD
PLL_VCC
PLL_VCC
PWR_DOWN
FREF_EXT
XTAL1
32 31 30 29 28 27 26 25
1 24
2 23
3 22
4 21
5 20
6 19
7 18
8 17
9 10 11 12 13 14 15 16
N/C
N[1]
N[0]
NC
XTAL_SEL
M[6]
M[5]
M[4]
S_CLOCK 1
S_DATA 2
S_LOAD 3
PLL_VCC 4
PLL_VCC 5
PWR_DOWN 6
FREF_EXT 7
XTAL1 8
32 31
9 10
30 29 28 27
11 12 13 14
26 25
24 N/C
Figure 3. 32--Lead LQFP (Top View)
23 N[1]
22 N[0]
21 NC
20 XTAL_SEL
19 M[6]
18 M[5]
17 M[4]
15 16
Figure 4. 32--Lead QFN (Top View)
Exposed Pad (EP)
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3
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Номер в каталоге | Описание | Производители |
NBC12439 | Programmable PLL Synthesized Clock Generator | ON Semiconductor |
NBC12439A | Programmable PLL Synthesized Clock Generator | ON Semiconductor |
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