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参数资料
| 型号： | SY89221UMG |
| 厂商： | MICREL INC |
| 元件分类： | 时钟及定时 |
| 英文描述： | 89221 SERIES, LOW SKEW CLOCK DRIVER, 15 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP64 |
| 封装： | LEAD FREE, TQFP-64 |
| 文件页数： | 1/17页 |
| 文件大小： | 828K |
| 代理商： | SY89221UMG |
Precision Edge is a registered trademark of Micrel, Inc.
Micrel Inc. 2180 Fortune Drive San Jose, CA 95131 USA tel +1 (
408) 944-0800 fax + 1 (408) 474-1000 http://www.micrel.com
September 2006
M9999-092906-A
hbwhelp@micrel.com or (408) 955-1690
SY89221U
Precision 1:15 LVPECL Fanout Buffer with
2:1 MUX and Four ÷1/÷2/÷4 Clock Divider
Output Banks
General Description
The SY89221U is a 2.5/3.3V precision, high-speed,
integrated clock divider and LVPECL fanout buffer
capable of handling clocks up to 1.5GHz. Optimized
for
communications
applications,
the
four
independently controlled output banks are phase-
matched and can be configured for pass through ÷1,
÷2 or ÷4 divider ratios.
The differential input includes Micrel’s unique, 3-pin
input termination architecture that allows the user to
interface to any differential signal (AC- or DC-coupled)
as small as 100mV (200mVPP) without any level
shifting or termination resistor networks in the signal
path. The low-skew, low-jitter outputs are LVPECL
compatible with extremely fast rise/fall times that are
guaranteed to be less than 220ps.
The /MR (master reset) input asynchronously resets
the outputs. A four-clock delay after de-asserting /MR
allows the counters to synchronize and start the
outputs from the same state without any runt pulse.
The SY89221U is part of Micrel’s Precision Edge
product family. All support documentation can be
found at Micrel's web site at: www.micrel.com.
Features
Four low-skew LVPECL output banks with
independently programmable ÷1, ÷2 and ÷4 divider
options
Four output banks, 15 total outputs
Guaranteed AC performance over temperature and
voltage:
– Accepts a clock frequency up to 1.5GHz
– <1600ps IN-to-OUT propagation delay
– <270ps rise/fall time
– <35 ps within-bank skew
Fail Safe Input
– Prevents outputs from oscillating
Ultra-low jitter design:
– <1psRMS random jitter
– <10psPP total jitter (clock)
Patent-pending input termination and VT pin
accepts DC- and AC-coupled inputs (CML, PECL,
LVDS)
CMOS/TTL-compatible output enable (EN) and
divider select control
2.5V ±5% or 3.3V ±10% power supply
–40°C to +85°C temperature range
Available in 64-pin TQFP
Applications
All SONET/SDH applications
All Fibre Channel applications
All Gigabit Ethernet applications
Markets
LAN/WAN Routers/Switches
Enterprise servers
Storage
ATE
Test and measurement
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SY89222L | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:3.3V DUAL TTL-to-DIFFERENTIAL PECL TRANSLATOR |
| SY89222LMG TR | 功能描述:转换 - 电压电平 3.3V Ultrasmall Dual LVTTL-to-LVPECL Translator (I Temp, Green) RoHS:否 制造商:Micrel 类型:CML/LVDS/LVPECL to LVCMOS/LVTTL 传播延迟时间:1.9 ns 电源电流:14 mA 电源电压-最大:3.6 V 电源电压-最小:3 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:MLF-8 |
| SY89222LMGTR | 制造商:Micrel Inc 功能描述: |
| SY89222LMG-TR | 功能描述:Mixed Signal Translator Unidirectional 1 Circuit 2 Channel 8-MLF? (2x2) 制造商:microchip technology 系列:SY89 包装:剪切带（CT） 零件状态:有效 转换器类型:混合信号 通道类型:单向 电路数:1 每个电路的通道数:2 电压 - VCCA:- 电压?- VCCB:- 输入信号:TTL 输出信号:PECL 输出类型:差分 数据速率:- 工作温度:-40°C ~ 85°C（TA） 特性:- 安装类型:表面贴装 封装/外壳:8-VFDFN 裸露焊盘，8-MLF? 供应商器件封装:8-MLF?（2x2） 标准包装:1 |
| SY89222LMI TR | 功能描述:IC TRANSLATOR DUAL 3.3V 8-MLF RoHS:否 类别:集成电路 (IC) >> 逻辑 - 变换器 系列:SY89 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:100 系列:- 逻辑功能:变换器，双向 位数:2 输入类型:CMOS 输出类型:CMOS 数据速率:16Mbps 通道数:2 输出/通道数目:1 差分 - 输入:输出:无/无 传输延迟（最大）:15ns 电源电压:1.65 V ~ 5.5 V 工作温度:-40°C ~ 85°C 封装/外壳:10-UFQFN 供应商设备封装:10-UTQFN（1.4x1.8） 包装:管件 |
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