843204AGI-01LF PDF预览

843204AGI-01LF

更新时间: 2025-09-23 19:18:03
品牌 Logo 应用领域
瑞萨 - RENESAS 晶体
页数 文件大小 规格书
15页 351K
描述
输入信号类型:LVCMOS,LVTTL,晶体;输出信号类型:LVPECL;元器件封装:48-TSSOP;

843204AGI-01LF 数据手册

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FemtoClock® Crystal-to-3.3V LVPECL  
Frequency Synthesizer  
843204I-01  
DATA SHEET  
GENERAL DESCRIPTION  
FEATURES  
The 843204I-01 is a 4 output LVPECL Synthe-sizer optimized  
to generate Gigabit Ethernet and SONET reference clock  
• Four 3.3V LVPECL outputs  
• Selectable crystal oscillator interface or clock inputs  
TM  
frequencies and is a member of the HiPerClocks family  
of high performance clock solutions from IDT. Using  
a 19.44MHz and 25MHz, 18pF parallel resonant crystal,  
155.52MHz and 156.25MHz frequencies can be generated.  
• Supports the following output frequencies: 155.52MHz  
and 156.25MHz  
• VCO range: 560MHz - 680MHz  
TM  
The 843204I-01 uses IDT’s FemtoClock low phase noise VCO  
technology and can achieve 1ps or lower typical RMS phase jitter.  
• RMS phase jitter @ 155.52MHz, using a 19.44MHz crystal  
(12kHz - 13MHz): 0.6ps (typical)  
• RMS phase jitter @ 156.25MHz, using a 25MHz crystal  
(1.875MHz - 20MHz): 0.7ps (typical)  
• Full 3.3V supply mode  
• -40°C to 85°C ambient operating temperature  
• Available in lead-free (RoHS 6) package  
• For functional replacement part us 8T49N285  
BLOCK DIAGRAM  
PIN ASSIGNMENT  
Pullup  
nPLL_BYPASS_A  
nQA1  
QA1  
nQA0  
QA0  
1
2
3
4
5
6
7
8
48  
47  
46  
45  
44  
43  
42  
41  
40  
39  
38  
37  
36  
35  
34  
33  
32  
31  
30  
29  
28  
27  
26  
25  
IN_SELA  
CLK0  
XTAL_IN0  
XTAL_OUT0  
nc  
VEE  
OEA0  
OEA1  
VCC  
VCCA  
nPLL_BYPASS_B  
nc  
SELB0  
VEE  
OEB0  
OEB1  
VCC  
SELB1  
VCCA  
nc  
nc  
nc  
nc  
nc  
Pullup  
IN_SELA  
Pulldown  
CLK0  
SELA0  
nc  
VCCO_A  
SELA1  
SELA0  
nPLL_BYPASS_A  
nc  
OEA0  
OEA1  
25MHz  
XTAL_IN0  
QA0  
÷4  
PLL  
0
1
OSC  
9
nQA0  
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
XTAL_OUT0  
156.25MHz  
nc  
nc  
nc  
SELA1  
625MHz  
XTAL_IN1  
XTAL_OUT1  
CLK1  
QA1  
Pullup  
Pullup  
nPLL_BYPASS_B  
IN_SELB  
0
1
nQA1  
nCLK1  
IN_SELB  
VCCO_B  
nc  
Pulldown  
CLK1  
SELB0  
Pullup/pulldown  
QB0  
nQB0  
QB1  
nQB1  
nCLK1  
OEB0  
OEB1  
QB0  
19.44MHz  
0
1
XTAL_IN1  
nQB0  
OSC  
÷4  
PLL  
843204I-01  
XTAL_OUT1  
SELB0  
48 Lead TSSOP  
6.1mm x 12.5mm x 0.925mm  
package body  
155.52MHz  
622.08MHz  
QB1  
0
1
G Package  
Top View  
nQB1  
843204I-01 REVISION A 11/5/15  

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