Table 10. AC Characteristics (TA " />
參數(shù)資料
型號(hào): ASM2I9940LG-32LT
廠商: ON Semiconductor
文件頁數(shù): 7/10頁
文件大小: 0K
描述: IC CLK BUFFER 2:18 250MHZ 32LQFP
標(biāo)準(zhǔn)包裝: 250
類型: 扇出緩沖器(分配)
電路數(shù): 1
比率 - 輸入:輸出: 2:18
差分 - 輸入:輸出: 是/無
輸入: LVCMOS,LVPECL
輸出: LVCMOS
頻率 - 最大: 250MHz
電源電壓: 2.375 V ~ 3.465 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 32-LQFP
供應(yīng)商設(shè)備封裝: 32-LQFP(7x7)
包裝: 托盤
ASM2I9940L
http://onsemi.com
6
Table 10. AC Characteristics (TA = 0°C to 70°C, VCCI = 2.5 V $ 5%, VCCO = 2.5 V $ 5%)
Symbol
Characteristic
Condition
Min
Typ
Max
Unit
Fmax
Maximum Input Frequency
200
MHz
tPLH
Propagation Delay
PECL_CLK v 150 MHz
CMOS_CLK v 150 MHz
(Note 7)
2.6
2.3
4.0
3.1
5.2
4.0
nS
tPLH
Propagation Delay
PECL_CLK > 150 MHz
CMOS_CLK > 150 MHz
2.8
2.3
3.8
3.1
5.0
4.0
nS
tsk(o)
Outputtooutput Skew
Within one bank
PECL_CLK
CMOS_CLK
(Note 7)
200
pS
tsk(pp)
Part–to–Part Skew
PECL_CLK ≤ 150 MHz
CMOS_CLK ≤ 150 MHz
(Notes 7 and 8)
2.6
1.7
nS
tsk(pp)
Part–to–Part Skew
PECL_CLK > 150 MHz
CMOS_CLK > 150 MHz
(Notes 7 and 8)
2.2
1.7
nS
tsk(pp)
Part–to–Part Skew
PECL_CLK
CMOS_CLK
(Notes 7 and 9)
1.2
1.0
nS
DC
Output Duty Cycle
fCLK < 134 MHz
fCLK v 200 MHz
Input DC = 50%
45
40
50
55
60
%
tr, tf
Output Rise/Fall Time
0.5 – 1.8 V
0.3
1.2
nS
7. Tested using standard input levels, Production tested @ 150 MHz.
8. Across temperature and voltage ranges, includes output skew.
9. For a specific temperature and voltage, includes output skew.
VTT
Pulse
Generator
Z=50
Ω
Z0=50
Ω
Z0 =50
Ω
RT
RT =50
Ω
VTT
=50
Ω
ASM2I9940L
Figure 3. LVCMOS_CLK ASM2I9940L AC Test Reference for VCC = 3.3 V and VCC = 2.5 V
VTT
Differential
Pulse Generator
Z=50
Ω
Z0=50
Ω
Z0
RT = 50
=50
Ω
TT
RT=50
Ω
ASM2I9940L
Figure 4. PECL_CLK ASM2I9940L AC Test Reference for VCC = 3.3 V and VCC = 2.5 V
V
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