參數資料
| 型號： | PI90LVT14QE |
| 廠商： | Pericom |
| 文件頁數： | 1/5頁 |
| 文件大小： | 0K |
| 描述： | IC CLOCK BUFFER MUX 2:5 20-QSOP |
| 產品變化通告： | Product Discontinuation 23/May/2008 |
| 標準包裝： | 55 |
| 類型： | 扇出緩沖器（分配），多路復用器 |
| 電路數： | 1 |
| 比率 - 輸入:輸出： | 2:5 |
| 差分 - 輸入:輸出： | 是/無 |
| 輸入： | LVDS，LVTTL |
| 輸出： | LVDS |
| 頻率 - 最大： | 250MHz |
| 電源電壓： | 3 V ~ 3.6 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 20-SSOP（0.154"，3.90mm 寬） |
| 供應商設備封裝： | 20-QSOP |
| 包裝： | 管件 |
1
PS8538D
10/27/09
PI90LV14 Block Diagram
Features
Meets and Exceeds the Requirements of ANSI
TIA/EIA-644-1995
Designed for clocking rates up to 320MHz
Operates from a single 3.3V Supply
Low Voltage Differential Signaling (LVDS) with Output
Voltages of ±350mV into a 100-ohm load
Choice between LVDS or TTL clock input
Synchronous Enable/Disable
Clock outputs default LOW when inputs open
Multiplexed clock input
– Internal 300kohms pullup resistor on input pins
– CLK & CLK have 110-ohm internal termination (PI90LVT14)
50ps Output-to-Output Skew
475ps typical propagation delay
±22ps Period Jitter
Bus Pins are high impedance when disabled or with VCC less
than 1.5V
TTL inputs are 5V Tolerant
Power Dissipation at 400Mbits/s of 150mW
Function compatible to Motorola (PECL)
– MC100EL14 and Micrel/Synergy (PECL)
–SY100EL14V
>9kVESDProtection
20-pin TSSOP (L) (Pb-free available)
Description
ThePI90LV14implementslowvoltagedifferentialsignaling(LVDS)
to achieve clocking rates as high as 320MHz with low skew.
The PI90LV14 is a low-skew 1:5 clock distribution chip which
incorporates multiplexed clock inputs to allow for distribution of a
lower-speed, single-ended clock or a high-speed system clock.
When LOWthe SEL pin will select the differential clock input.
The common enable (EN) is synchronous so that the outputs will
only be enabled/disabled when they are already in the LOW state.
This avoids any chance of generating a runt clock pulse when the
device is enabled/disabled as can happen with an asynchronous
control. Because the internal flip-flop is clocked on the falling edge
of the input clock, all associated specification limits are referenced
to the negative edge of the clock input.
The intended application of these devices and signaling technique
is for high-speed clock distribution between boards.
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PI90LV14/PI90LVT14
1:5 Clock Distribution
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Pin Descriptions
K
L
CK
L
C
SL
E
S*
N
E+
T
U
O
K
L
C
LX
L
HX
L
H
XL
H
L
XH
H
L
H
↓↓
XH
*
Z
Function Table
* On next negative transition of CLK, or SCLK
EN
CLK
GND
SEL
GND
CLK
SCLK
GND
VCC
12
11
13
14
15
16
19
20
17
18
CLK5OUT–
CLK5OUT+
10
9
CLK4OUT–
CLK4OUT+
8
7
CLK3OUT–
CLK3OUT+
6
5
CLK2OUT–
CLK2OUT+
4
3
CLK1OUT–
CLK1OUT+
2
1
D
Q
V
1
0
110
PI90LVT14
Only
08-0295
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相關代理商/技術參數 |
參數描述 |
|---|---|
| PI90LVT14QEX | 功能描述:時鐘驅動器及分配 1:5 LVDS Clock Distribution RoHS:否 制造商:Micrel 乘法/除法因子:1:4 輸出類型: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 |
| PI90LVT211 | 制造商:PERICOM 制造商全稱:Pericom Semiconductor Corporation 功能描述:1:6 Differential Clock Distribution Chip |
| PI90LVT211L | 制造商:PERICOM 制造商全稱:Pericom Semiconductor Corporation 功能描述:1:6 Differential Clock Distribution Chip |
| PI90LVT211LE | 制造商:PERICOM 制造商全稱:Pericom Semiconductor Corporation 功能描述:1:6 Differential Clock Distribution Chip |
| PI90LVT211Q | 制造商:PERICOM 制造商全稱:Pericom Semiconductor Corporation 功能描述:1:6 Differential Clock Distribution Chip |
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