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參數(shù)資料
| 型號(hào)： | FC940L |
| 文件頁(yè)數(shù)： | 1/6頁(yè) |
| 文件大小： | 51K |
| 代理商： | FC940L |
August 1998
Revised January 1999
F
1999 Fairchild Semiconductor Corporation
DS500140.prf
www.fairchildsemi.com
FC940L
Low Voltage 1 to 18 Clock Distribution Device with
Selectable PECL or LVTTL Input
General Description
The FC940L is a 1 to 18 low voltage clock fanout buffer.
The device allows for the selection of either differential
PECL or LVTTL/CMOS input levels. The 18 outputs are
compatible with LVCMOS or LVTTL technology and are
capable of driving 50
series or parallel terminated lines.
The device has a minimal propagation delay and features
low part-to-part and pin-to-pin skews. The outputs of the
device are designed to operate at either 2.5V or 3.3V V
CC
.
The output transistors have a 20
(30
) impedance at
3.3V (2.5V) V
CC
. The input and core circuitry operate at
3.3V.
The FC940L is fabricated in a high performance BiCMOS
Process.
Features
I
Selectable Differential PECL or LVTTL/CMOS inputs
I
2.5V/3.3V output V
CC
supply operation
I
Typical propagation delays 2.5 ns
I
Part-to-Part skew
<
900 ps
I
Typical Pin-to-Pin skew 200 ps
I
Ability to drive 50
series or parallel terminated trans-
mission lines
I
Latchup performance exceeds 300 mA
I
ESD performance:
Human body model
>
2000V
Machine model
>
200V
I
Pin compatible to MPC940L
I
32 pin TQFP package
Ordering Code:
Device also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Connection Diagram
Pin Assignment for TQFP
Pin Descriptions
Truth Table
H
=
High Voltage Level
L
=
Low Voltage Level
X
=
Immaterial
Order Number
FC940LVB
Package Number
VBE32A
Package Description
32-Lead Thin Quad Flat Package, JEDEC MO-136, 7mm Square
Pin Names
Description
PECL_CLK, PECL_CLK
Differential PECL Input
LVC_CLK
LVTTL/CMOS Clock Input
SEL
Input Selection Pin
O[0:17]
Low Voltage CMOS Outputs
Inputs
LVC_CLK
Outputs
O
0
–O
17
L
H
L
H
PECL_CLK
SEL
L
H
X
X
X
X
L
H
L
L
H
H
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| FC940L WAF | 制造商:Fairchild Semiconductor Corporation 功能描述: |
| FC940LVB | 功能描述:時(shí)鐘驅(qū)動(dòng)器及分配 1-to-8 Clock Dis Dev RoHS:否 制造商:Micrel 乘法/除法因子:1:4 輸出類(lèi)型:Differential 最大輸出頻率:4.2 GHz 電源電壓-最大: 電源電壓-最小:5 V 最大工作溫度:+ 85 C 封裝 / 箱體:SOIC-8 封裝:Reel |
| FC940LVBX | 功能描述:時(shí)鐘驅(qū)動(dòng)器及分配 1-to-8 Clock Dis Dev RoHS:否 制造商:Micrel 乘法/除法因子:1:4 輸出類(lèi)型:Differential 最大輸出頻率:4.2 GHz 電源電壓-最大: 電源電壓-最小:5 V 最大工作溫度:+ 85 C 封裝 / 箱體:SOIC-8 封裝:Reel |
| FC9728-SS-0256-7 | 制造商:MISC. SPCR/STNDF/HND 功能描述: |
| FC9P | 制造商:Cinch Connectors 功能描述:Conn Super Fast D-Sub PIN 9 POS IDT RA Cable Mount 9 Terminal 1 Port 制造商:Cinch Connectors 功能描述:PLUG D IDC 9WAY |
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