參數(shù)資料
型號(hào): ICS83940DYLFT
廠商: IDT, Integrated Device Technology Inc
文件頁(yè)數(shù): 1/16頁(yè)
文件大?。?/td> 0K
描述: IC CLOCK BUFFER MUX 2:18 32-LQFP
標(biāo)準(zhǔn)包裝: 1,000
系列: HiPerClockS™
類型: 扇出緩沖器(分配),多路復(fù)用器
電路數(shù): 1
比率 - 輸入:輸出: 2:18
差分 - 輸入:輸出: 是/無(wú)
輸入: CML,LVCMOS,LVPECL,LVTTL,SSTL
輸出: LVCMOS,LVTTL
頻率 - 最大: 250MHz
電源電壓: 2.375 V ~ 3.465 V
工作溫度: 0°C ~ 70°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-TQFP(7x7)
包裝: 帶卷 (TR)
其它名稱: 83940DYLFT
83940DY
www.idt.com
REV. B AUGUST 9, 2010
1
ICS83940D
LOW SKEW, 1-TO-18
LVPECL-TO-LVCMOS / LVTTL FANOUT BUFFER
GENERAL DESCRIPTION
The ICS83940D is a low skew, 1-to-18 LVPECL-to-
LVCMOS/LVTTL Fanout Buffer. The ICS83940D has two
selectable clock inputs. The PCLK, nPCLK pair can accept
LVPECL, CML, or SSTL input levels. The LVCMOS_CLK
can accept LVCMOS or LVTTL input levels. The low
impedance LVCMOS/LVTTL outputs are designed to drive
50
Ω series or parallel terminated transmission lines.
The ICS83940D is characterized at full 3.3V and 2.5V or
mixed3.3V core, 2.5V output operating supply modes.
Guaranteed output and part-to-part skew characteristics make
the ICS83940D ideal for those clock distribution applications
demanding well defined performance and repeatability.
BLOCK DIAGRAM
PIN ASSIGNMENT
FEATURES
18 LVCMOS/LVTTL outputs
Selectable LVCMOS_CLK or LVPECL clock inputs
PCLK, nPCLK supports the following input types:
LVPECL, CML, SSTL
LVCMOS_CLK accepts the following input levels:
LVCMOS or LVTTL
Maximum output frequency: 250MHz
Output skew: 150ps (maximum)
Part to part skew: 750ps (maximum)
Additive phase jitter, RMS: < 0.03ps (typical)
Full 3.3V and 2.5V or mixed 3.3V core, 2.5V output
supply modes
0°C to 70°C ambient operating temperature
Lead-Free package available
32-Lead LQFP
7mm x 7mm x 1.4mm package body
Y Pacakge
Top View
Q0:Q17
CLK_SEL
PCLK
nPCLK
LVCMOS_CLK
0
1
32 31 30 29 28 27 26 25
9 10 11 12 13 14 15 16
1
2
3
4
5
6
7
8
24
23
22
21
20
19
18
17
Q6
Q7
Q8
VDD
Q9
Q10
Q11
GND
LVCMOS_CLK
CLK_SEL
PCLK
nPCLK
VDD
VDDO
V
DDO
Q12
Q13
Q14
GND
Q15
Q16
Q17
GND
Q5
Q4
Q3
V
DDO
Q2
Q1
Q0
ICS83940D
18
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