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參數資料
| 型號： | SY89221UMG |
| 廠商： | MICREL INC |
| 元件分類： | 時鐘及定時 |
| 英文描述： | 89221 SERIES, LOW SKEW CLOCK DRIVER, 15 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP64 |
| 封裝： | LEAD FREE, TQFP-64 |
| 文件頁數： | 1/17頁 |
| 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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相關代理商/技術參數 |
參數描述 |
|---|---|
| SY89222L | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:3.3V DUAL TTL-to-DIFFERENTIAL PECL TRANSLATOR |
| SY89222LMG TR | 功能描述:轉換 - 電壓電平 3.3V Ultrasmall Dual LVTTL-to-LVPECL Translator (I Temp, Green) RoHS:否 制造商:Micrel 類型:CML/LVDS/LVPECL to LVCMOS/LVTTL 傳播延遲時間:1.9 ns 電源電流:14 mA 電源電壓-最大:3.6 V 電源電壓-最小:3 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體: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 包裝:剪切帶（CT） 零件狀態:有效 轉換器類型:混合信號 通道類型:單向 電路數:1 每個電路的通道數:2 電壓 - VCCA:- 電壓?- VCCB:- 輸入信號:TTL 輸出信號:PECL 輸出類型:差分 數據速率:- 工作溫度:-40°C ~ 85°C（TA） 特性:- 安裝類型:表面貼裝 封裝/外殼:8-VFDFN 裸露焊盤，8-MLF? 供應商器件封裝:8-MLF?（2x2） 標準包裝:1 |
| SY89222LMI TR | 功能描述:IC TRANSLATOR DUAL 3.3V 8-MLF RoHS:否 類別:集成電路 (IC) >> 邏輯 - 變換器 系列:SY89 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:100 系列:- 邏輯功能:變換器，雙向 位數:2 輸入類型:CMOS 輸出類型:CMOS 數據速率:16Mbps 通道數:2 輸出/通道數目:1 差分 - 輸入:輸出:無/無 傳輸延遲（最大）:15ns 電源電壓:1.65 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 封裝/外殼:10-UFQFN 供應商設備封裝:10-UTQFN（1.4x1.8） 包裝:管件 |
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