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參數(shù)資料
| 型號： | SY89846UMG |
| 廠商： | Micrel Inc |
| 文件頁數(shù)： | 7/9頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC CLK BUFF MUX 2:5 2GHZ 32-MLF |
| 標(biāo)準(zhǔn)包裝： | 60 |
| 系列： | Precision Edge® |
| 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： | 2:5 |
| 差分 - 輸入:輸出： | 是/是 |
| 輸入： | CML，LVDS，PECL |
| 輸出： | LVPECL |
| 頻率 - 最大： | 2GHz |
| 電源電壓： | 2.375 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，32-MLF? |
| 供應(yīng)商設(shè)備封裝： | 32-MLF?（5x5） |
| 包裝： | 管件 |
| 產(chǎn)品目錄頁面： | 1084 (CN2011-ZH PDF) |
| 其它名稱： | 576-1617 |
Micrel, Inc.
SY89846U
Oct. 1, 2013
M9999-072211B
hbwhelp@micrel.com or (408) 955-1690
7
Functional Description
Clock Select (SEL)
SEL is an asynchronous TTL/CMOS compatible input
that selects one of the two input signals. An internal
25k pull-up resistor defaults the input to logic HIGH if
left open. Input switching threshold is VCC/2. Refer to
Figure 1a.
Fail-Safe Input (FSI)
The input includes a special fail-safe circuit to sense
the amplitude of the input signal and to latch the
outputs when there is no input signal present, or when
the amplitude of the input signal drops sufficiently
below
100mVPK
(200mVPP),
typically
30mVPK.
Maximum frequency of the SY89846U is limited by the
FSI function. Refer to Figure 1b.
Input Clock Failure Case
If the input clock fails to a floating, static, or extremely
low signal swing such that the voltage swing across
the input pair is significantly less than 100mV, FSI
function will eliminate a metastable condition and latch
the outputs to the last valid state. No ringing and no
undetermined state will occur at the output under
these conditions. The output recovers to normal
operation once the input signal returns to a valid state
with a typical swing greater than 30mV.
Note that the FSI function will not prevent duty cycle
distortion in case of a slowly deteriorating (but still
toggling) input signal. Due to the FSI function, the
propagation delay will depend on rise and fall time of
the input signal and on its amplitude. Refer to “Typical
Opera
ting Characteristics” for detailed information.
Output Enable (OE)
OE is a synchronous TTL/CMOS compatible input that
enables/disables the outputs based on the input to
this pin. The enable function is synchronous so that
the clock outputs will be enabled or disabled following
a rising and a falling edge of the input clock. Refer to
Figure 1c.
Internal 25k pull-up resistor defaults the
input to logic HIGH if left open. Input switching
threshold is VCC/2.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SY89846UMG TR | 功能描述:緩沖器和線路驅(qū)動器 1:5 LVPECL Fanout Buffer w/ 2:1 FSI Input MUX RoHS:否 制造商:Micrel 輸入線路數(shù)量:1 輸出線路數(shù)量:2 極性:Non-Inverting 電源電壓-最大:+/- 5.5 V 電源電壓-最小:+/- 2.37 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel |
| SY89846UMGTR | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:1.5GHz Precision, LVPECL 1:5 Fanout with 2:1 MUX and Fail Safe Input with Internal Termination |
| SY89847U | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:1.5GHz Precision, LVDS 1:5 Fanout with 2:1 MUX and Fail Safe Input with Internal Termination |
| SY89847U_10 | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:1.5GHz Precision, LVDS 1:5 Fanout with 2:1 |
| SY89847UMG | 功能描述:緩沖器和線路驅(qū)動器 1:5 LVDS Fanout Buffer w/ 2:1 FSI Input MUX RoHS:否 制造商:Micrel 輸入線路數(shù)量:1 輸出線路數(shù)量:2 極性:Non-Inverting 電源電壓-最大:+/- 5.5 V 電源電壓-最小:+/- 2.37 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel |
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