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參數(shù)資料
| 型號： | ICS87993AYILFT |
| 廠商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分類： | 時鐘及定時 |
| 英文描述： | 87993 SERIES, PLL BASED CLOCK DRIVER, 5 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP32 |
| 封裝： | 7 X 7 MM, 1.40 MM HEIGHT, LEAD FREE, MS-026, LQFP-32 |
| 文件頁數(shù)： | 1/16頁 |
| 文件大?。?/td> | 199K |
| 代理商： | ICS87993AYILFT |
87993AYI
www.icst.com/products/hiperclocks.html
REV. B OCTOBER 21, 2004
1
Integrated
Circuit
Systems, Inc.
ICS87993I
1-TO-5 DIFFERENTIAL-TO-3.3V LVPECL
PLL CLOCK DRIVER W/DYNAMIC CLOCK SWITCH
GENERAL DESCRIPTION
The ICS87993I is a PLL clock driver designed
specifically for redundant clock tree designs. The
device receives two differential LVPECL clock
signals from which it generates 5 new differen-
tial LVPECL clock outputs. Two of the output pairs
regenerate the input signal frequency and phase while the
other three pairs generate 2x, phase aligned clock outputs.
External PLL feedback is used to also provide zero delay
buffer performance.
The ICS87993I Dynamic Clock Switch (DCS) circuit continu-
ously monitors both input CLK signals. Upon detection of a
failure (CLK stuck HIGH or LOW for at least 1 period), the
INP_BAD for that CLK will be latched (H). If that CLK is the
primary clock, the DCS will switch to the good secondary
clock and phase/frequency alignment will occur with minimal
output phase disturbance. The typical phase bump caused
by a failed clock is eliminated.
HiPerClockS
ICS
FEATURES
5 differential 3.3V LVPECL outputs
Selectable differential clock inputs
CLKx, nCLKx pair can accept the following differential
input levels: LVPECL, LVDS, LVHSTL, HCSL, SSTL
Output frequency range: 50MHz to 250MHz
VCO range: 200MHz to 500MHz
External feedback for “zero delay” clock regeneration
with configurable frequencies
Cycle-to-cycle jitter (RMS): 20ps (maximum)
Output skew: 70ps (maximum), within one bank
3.3V supply voltage
-40°C to 85°C ambient operating temperature
Lead-Free package available
Pin compatible with MPC993
32-Lead QFP (LQFP)
7mm x 7mm x 1.4mm
package body
Y Package
Top View
24 23 22 21 20 19 18 17
1
2
3
4
5
6
7
8
25
26
27
28
29
30
31
32
16
15
14
13
12
11
10
9
VCC
INP0BAD
INP1BAD
CLK_SELECTED
VEE
nEXT_FB
EXT_FB
VEE
nQA1
QA1
nQA0
QA0
VCC
VCCA
MAN_OVERRIDE
PLL_SEL
V
EE
nCLK1
CLK1
CLK_SEL
nCLK0
CLK0
nALARM_RESET
nMR
V
CC
nQB2
QB2
nQB1
QB1
nQB0
QB0
V
CC
ICS87993I
PIN ASSIGNMENT
BLOCK DIAGRAM
PLL
÷2
÷4
Dynamic Switch
Logic
nQB0
QB0
nQB1
QB1
nQB2
QB2
nQA0
QA0
nQA1
QA1
PLL_SEL
CLK_SELECTED
INP1BAD
INP0BAD
MAN_OVERRIDE
ALARM_RESET
SEL_CLK
nCLK0
CLK0
nCLK1
CLK1
nEXT_FB
EXT_FB
nMR
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|---|---|
| ICS889474AKLF | 功能描述:IC CLK BUFFER MUX 2:2 24-VFQFPN RoHS:是 類別:集成電路 (IC) >> 時鐘/計時 - 時鐘緩沖器，驅(qū)動器 系列:HiPerClockS™ 標(biāo)準(zhǔn)包裝:74 系列:- 類型:扇出緩沖器（分配） 電路數(shù):1 比率 - 輸入:輸出:1:10 差分 - 輸入:輸出:是/是 輸入:HCSL, LVCMOS, LVDS, LVPECL, LVTTL 輸出:HCSL，LVDS 頻率 - 最大:400MHz 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:32-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:32-QFN（5x5） 包裝:管件 |
| ICS889474AKLFT | 功能描述:IC CLK BUFFER MUX 2:2 24-VFQFPN RoHS:是 類別:集成電路 (IC) >> 時鐘/計時 - 時鐘緩沖器，驅(qū)動器 系列:HiPerClockS™ 標(biāo)準(zhǔn)包裝:74 系列:- 類型:扇出緩沖器（分配） 電路數(shù):1 比率 - 輸入:輸出:1:10 差分 - 輸入:輸出:是/是 輸入:HCSL, LVCMOS, LVDS, LVPECL, LVTTL 輸出:HCSL，LVDS 頻率 - 最大:400MHz 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:32-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:32-QFN（5x5） 包裝:管件 |
| ICS889831AKLF | 功能描述:IC CLK BUFF 1:4 2.1GHZ 16-VFQFPN RoHS:是 類別:集成電路 (IC) >> 時鐘/計時 - 時鐘緩沖器，驅(qū)動器 系列:HiPerClockS™ 標(biāo)準(zhǔn)包裝:1 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 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:- 其它名稱:800-1923-6 |
| ICS889831AKLFT | 功能描述:IC CLK BUFF 1:4 2.1GHZ 16-VFQFPN RoHS:是 類別:集成電路 (IC) >> 時鐘/計時 - 時鐘緩沖器，驅(qū)動器 系列:HiPerClockS™ 標(biāo)準(zhǔn)包裝:1 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 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:- 其它名稱:800-1923-6 |
| ICS889832AKLF | 功能描述:IC CLK BUFFER 1:4 2GHZ 16-VFQFPN RoHS:是 類別:集成電路 (IC) >> 時鐘/計時 - 時鐘緩沖器，驅(qū)動器 系列:HiPerClockS™ 標(biāo)準(zhǔn)包裝:1 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 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:- 其它名稱:800-1923-6 |
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