參數(shù)資料
型號: CY29977
英文描述: Clocks and Buffers
中文描述: 時鐘和緩沖器
文件頁數(shù): 4/7頁
文件大小: 193K
代理商: CY29977
CY29940-1
Document #: 38-07487 Rev. **
Page 4 of 7
Notes:
7.
8.
9.
10. Parameters tested @ 150 MHz.
Parameters are guaranteed by design and characterization. Not 100% tested in production. All parameters specified with loaded outputs.
Across temperature and voltage ranges, includes output skew.
AC Electrical Specifications
(V
DD
= 3.3V ±5% or 2.5V ±5%, V
DDC
= 3.3V ±5% or 2.5V ±5%)
[7]
Parameter
Description
F
max
Input Frequency
Conditions
Min.
Typ.
Max.
200
180
4.0
5.2
3.4
4.0
55
60
150
1.4
2.2
1.2
1.7
850
750
Unit
MHz
LVCMOS Input
LVPECL Input
V
DD
= 3.3V
V
DD
= 2.5V
V
DD
= 3.3V
V
DD
= 2.5V
FCLK < 134 MHz
FCLK > 134 MHz
T
PD
PECL_CLK to Q Delay
[4,5,10]
</ =150 MHz
2.0
2.6
1.8
2.3
45
40
ns
LVCMOS to Q Delay
[4,5,10]
</ =150 MHz
FoutDC
Output Duty Cycle
[4,5,6]
%
T
skew
T
skew
(pp)
Output-to-Output Skew
[4,5]
Part-to-Part Skew
[8]
ps
ns
PECL, V
DDC
= 3.3V
PECL, V
DDC
= 2.5V
TCLK, V
DDC
= 3.3V
TCLK, V
DDC
= 2.5V
PECL_CLK
TCLK
0.7V to 2.0V,
V
DDC
= 3.3V
0.5V to 1.8V,
V
DDC
= 2.5V
T
skew
(pp)
Part-to-Part Skew
[8]
ns
T
skew
(pp)
Part to Part Skew
[9]
ps
t
R
/t
F
Output Clocks Rise/Fall Time
[4,5]
0.3
1.1
ns
0.3
1.3
Pulse
Generator
Z = 50 ohm
Zo = 50 ohm
VTT
Zo = 50 ohm
VTT
R
T
= 50 ohm
R
T
= 50 ohm
CY29940-1 DUT
Figure 1. LVCMOS_CLK CY29940-1 Test Reference for V
CC
= 3.3V and V
CC
= 2.5V
Differential
Pulse
Generator
Z = 50 ohm
Zo = 50 ohm
Zo = 50 ohm
VTT
R
T
= 50 ohm
CY29940-1 DUT
Zo = 50 ohm
R
T
= 50 ohm
VTT
Figure 2. PECL_CLK CY29940-1 Test Reference for V
CC
= 3.3V and V
CC
= 2.5V
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