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| 型号： | IDT5991A-2JG8 |
| 厂商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分类： | 时钟及定时 |
| 英文描述： | 5991 SERIES, PLL BASED CLOCK DRIVER, 8 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQCC32 |
| 封装： | PLASTIC, LCC-32 |
| 文件页数： | 1/8页 |
| 文件大小： | 79K |
| 代理商： | IDT5991A-2JG8 |
1
COMMERCIALANDINDUSTRIALTEMPERATURERANGES
IDT5991A
PROGRAMMABLESKEWPLLCLOCKDRIVERTURBOCLOCK
AUGUST 2001
2001
Integrated Device Technology, Inc.
DSC 5843/2
c
IDT5991A
COMMERCIAL AND INDUSTRIAL TEMPERATURE RANGES
PROGRAMMABLE SKEW
PLL CLOCK DRIVER
TURBOCLOCK
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
FEATURES:
4 pairs of programmable skew outputs
Low skew: 200ps same pair, 250ps all outputs
Selectable positive or negative edge synchronization:
Excellent for DSP applications
Synchronous output enable
Output frequency: 3.75MHz to 100MHz
2x, 4x, 1/2, and 1/4 outputs
5V with TTL outputs
3 skew grades:
IDT5991A-2: tSKEW0<250ps
IDT5991A-5: tSKEW0<500ps
IDT5991A-7: tSKEW0<750ps
3-level inputs for skew and PLL range control
PLL bypass for DC testing
External feedback, internal loop filter
46mA IOL high drive outputs
Low Jitter: <200ps peak-to-peak
Outputs drive 50
Ω
Ω terminated lines
Pin-compatible with Cypress CY7B991
Available in PLCC Package
FUNCTIONAL BLOCK DIAGRAM
GND/sO E
1Q0
Skew
Select
1Q1
1F1:0
3
2Q0
Skew
Select
2Q1
2F1:0
FS
3
REF
PLL
FB
3
3Q0
Skew
Select
3Q1
3F1:0
3
4Q0
4Q1
Skew
Select
4F1:0
3
VCCQ/P E
DESCRIPTION:
The IDT5991A is a high fanout PLL based clock driver intended for
high performance computing and data-communications applications. A
key feature of the programmable skew is the ability of outputs to lead or
lag the REF input signal. The IDT5991A has eight programmable skew
outputs in four banks of 2. Skew is controlled by 3-level input signals
that may be hard-wired to appropriate HIGH-MID-LOW levels.
The IDT5991A maintains Cypress CY7B991 compatibility while pro-
viding two additional features: Synchronous Output Enable (GND/
sOE),
and Positive/Negative Edge Synchronization (VCCQ/PE). When the GND/
sOE pin is held low, all the outputs are synchronously enabled (CY7B991
compatibility). However, if GND/
sOE is held high, all the outputs except
3Q0 and 3Q1 are synchronously disabled.
Furthermore, when the VCCQ/PE is held high, all the outputs are syn-
chronized with the positive edge of the REF clock input (CY7B991 com-
patibility). When VCCQ/PE is held low, all the outputs are synchronized
with the negative edge of REF.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| IDT5991A-5JGI | 功能描述:IC CLK DVR PLL FANOUT 32-PLCC RoHS:是 类别:集成电路 (IC) >> 时钟/计时 - 时钟发生器，PLL，频率合成器 系列:TurboClock™ 标准包装:1,000 系列:- 类型:时钟/频率合成器，扇出分配 PLL:- 输入:- 输出:- 电路数:- 比率 - 输入:输出:- 差分 - 输入:输出:- 频率 - 最大:- 除法器/乘法器:- 电源电压:- 工作温度:- 安装类型:表面贴装 封装/外壳:56-VFQFN 裸露焊盘 供应商设备封装:56-VFQFP-EP（8x8） 包装:带卷 (TR) 其它名称:844S012AKI-01LFT |
| IDT5991A-5JGI8 | 功能描述:IC CLK DVR PLL FANOUT 32-PLCC RoHS:是 类别:集成电路 (IC) >> 时钟/计时 - 时钟发生器，PLL，频率合成器 系列:TurboClock™ 标准包装:1,000 系列:- 类型:时钟/频率合成器，扇出分配 PLL:- 输入:- 输出:- 电路数:- 比率 - 输入:输出:- 差分 - 输入:输出:- 频率 - 最大:- 除法器/乘法器:- 电源电压:- 工作温度:- 安装类型:表面贴装 封装/外壳:56-VFQFN 裸露焊盘 供应商设备封装:56-VFQFP-EP（8x8） 包装:带卷 (TR) 其它名称:844S012AKI-01LFT |
| IDT5991A-7JGI | 功能描述:IC CLK DVR PLL FANOUT 32-PLCC RoHS:是 类别:集成电路 (IC) >> 时钟/计时 - 时钟发生器，PLL，频率合成器 系列:TurboClock™ 标准包装:1,000 系列:- 类型:时钟/频率合成器，扇出分配 PLL:- 输入:- 输出:- 电路数:- 比率 - 输入:输出:- 差分 - 输入:输出:- 频率 - 最大:- 除法器/乘法器:- 电源电压:- 工作温度:- 安装类型:表面贴装 封装/外壳:56-VFQFN 裸露焊盘 供应商设备封装:56-VFQFP-EP（8x8） 包装:带卷 (TR) 其它名称:844S012AKI-01LFT |
| IDT5991A-7JGI8 | 功能描述:IC CLK DVR PLL FANOUT 32-PLCC RoHS:是 类别:集成电路 (IC) >> 时钟/计时 - 时钟发生器，PLL，频率合成器 系列:TurboClock™ 标准包装:1,000 系列:- 类型:时钟/频率合成器，扇出分配 PLL:- 输入:- 输出:- 电路数:- 比率 - 输入:输出:- 差分 - 输入:输出:- 频率 - 最大:- 除法器/乘法器:- 电源电压:- 工作温度:- 安装类型:表面贴装 封装/外壳:56-VFQFN 裸露焊盘 供应商设备封装:56-VFQFP-EP（8x8） 包装:带卷 (TR) 其它名称:844S012AKI-01LFT |
| IDT5991A-7JI | 制造商:Integrated Device Technology Inc 功能描述: |
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