参数资料
型号: CY2SSTV857ZXI-27T
厂商: Silicon Laboratories Inc
文件页数: 1/8页
文件大小: 0K
描述: IC CLK DDR266/333BUF1:10 48TSSOP
标准包装: 2,000
系列: *
类型: *
PLL: *
主要目的: *
输入: *
输出: *
电路数: *
比率 - 输入:输出: *
差分 - 输入:输出: *
频率 - 最大: *
电源电压: *
工作温度: *
安装类型: *
封装/外壳: *
供应商设备封装: *
包装: *
Differential Clock Buffer/Driver DDR333/PC2700-Compliant
CY2SSTV857-27
.......................... Document #: 38-07464 Rev. *F Page 1 of 8
400 West Cesar Chavez, Austin, TX 78701
1+(512) 416-8500
1+(512) 416-9669
www.silabs.com
Features
Operating frequency: 60 MHz to 200 MHz
Supports 266, 333 MHz DDR SDRAM
10 differential outputs from 1 differential input
Spread-Spectrum-compatible
Low jitter (cycle-to-cycle): < 75
Very low skew: < 100 ps
Power management control input
High-impedance outputs when input clock < 10 MHz
2.5V operation
Pin-compatible with CDC857-2 and -3
48-pin TSSOP package
Industrial temp. of –40° to +85°C
Conforms to JEDEC DDR specification
Description
The CY2SSTV857-27 is a high-performance, low-skew,
low-jitter zero-delay buffer designed to distribute differential
clocks in high-speed applications. The CY2SSTV857-27
generates ten differential pair clock outputs from one differ-
ential pair clock input. In addition, the CY2SSTV857-27
features differential feedback clock outputs and inputs. This
allows the CY2SSTV857-27 to be used as a zero-delay buffer.
When used as a zero-delay buffer in nested clock trees, the
CY2SSTV857-27 locks onto the input reference and translates
with near-zero delay to low-skew outputs.
Block Diagram
Pin Configuration
3
2
5
6
10
9
20
19
22
23
46
47
44
43
39
40
29
30
27
26
32
33
Y0
Y0 #
Y1
Y1 #
Y2
Y2 #
Y3
Y3 #
Y4
Y4 #
Y5
Y5 #
Y6
Y6 #
Y7
Y7 #
Y8
Y8 #
Y9
Y9 #
FB O U T
FB O U T #
T e s t and
Po w e rd o w n
Log ic
PL L
13
14
36
35
FB IN
FB IN #
CL K
CL K #
AV D D
37
16
PD #
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
VSS
Y0 #
Y0
VD D Q
Y1
Y1 #
VSS
Y2 #
Y2
VD D Q
CL K
CL K #
VD D Q
AVD D
AVSS
VSS
Y3 #
Y3
VD D Q
Y4
Y4 #
VSS
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
VSS
Y5 #
Y5
V DDQ
Y6
Y6 #
VSS
Y7 #
Y7
V DDQ
PD #
FB IN
FB IN #
VD D Q
FB O U T #
FB O U T
VSS
Y8 #
Y8
V DDQ
Y9
Y9 #
VSS
CY2S
ST
V85
7
-2
7
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