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參數(shù)資料
| 型號(hào)： | SY89840UMG |
| 廠商： | MICREL INC |
| 元件分類： | 通用總線功能 |
| 英文描述： | Precision LVPECL Runt Pulse Eliminator 2:1 Multiplexer |
| 中文描述： | 89840 SERIES, 2 LINE TO 1 LINE MULTIPLEXER, COMPLEMENTARY OUTPUT, QCC16 |
| 封裝： | LEAD FREE, MLF-16 |
| 文件頁(yè)數(shù)： | 4/15頁(yè) |
| 文件大?。?/td> | 1745K |
| 代理商： | SY89840UMG |
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Micrel, Inc.
SY89840U
February 2005
4
M9999-021705
hbwhelp@micrel.com
or (408) 955-1690
Pin Description
Pin Number
Pin Name
Pin Function
4, 1,
16, 13
IN0, /IN0,
IN1, /IN1
Differential Inputs: These input pairs are the differential signal inputs to the
device. These inputs accept AC or DC-coupled signals as small as 100mV
(200mV
pp
). Each pin of a pair internally terminates to a VT
pin through 50 .
Please refer to the “Input Interface Applications” section for more details.
3, 15
VT0, VT1
Input Termination Center-Tap: Each side of the differential input pair terminates
to a VT pin. The VT0 and VT1 pins provide a center-tap to a termination network
for maximum interface flexibility. See the “Input Interface Applications” section for
more details.
2, 14
VREF-AC0
VREF-AC1
Reference Voltage: This output biases to V
CC
–1.2V. It is used for AC-coupling
inputs IN and /IN. Connect VREF-AC directly to the corresponding VT pin. Bypass
with 0.01 F low ESR capacitor to V
CC
. Maximum sink/source current is ±1.5mA.
Due to the limited drive capability, the VREF-AC pin is only intended to drive its
respective VT pin. See “Input Interface Applications” section.
10
SEL
This single-ended TTL/CMOS-compatible input selects the inputs to the
multiplexer. Note that this input is internally connected to a 25k pull-up resistor
and will default to a logic HIGH state if left open.
5, 8, 12
VCC
Positive Power Supply: Bypass with 0.1 F//0.01 F low ESR capacitors as close
to VCC pins as possible.
6, 7
Q, /Q
Differential Outputs: This differential LVPECL output is a logic function of the IN0,
IN1, and SEL inputs. Please refer to the truth table below for details.
9
GND
Exposed Pad
Ground: Ground pin and exposed pad must be connected to the same ground
plane.
11
CAP
Power-On Reset (POR) Initialization capacitor. When using the multiplexer with
RPE capability, this pin is tied to a capacitor to V
CC
. The purpose is to ensure the
internal RPE logic starts up in a known state. See "Power-On Reset (POR)
Description" section for more details regarding capacitor selection. If this pin is
tied directly to V
CC
, the RPE function will be disabled and the multiplexer will
function as a normal multiplexer. The CAP pin should never be left open.
Truth Table
INPUTS
IN1
OUTPUTS
Q
IN0
/IN0
/IN1
SEL
/Q
0
1
X
X
0
0
1
1
0
X
X
0
1
0
X
X
0
1
1
0
1
X
X
1
0
1
1
0
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| SY89840UMGTR | Precision LVPECL Runt Pulse Eliminator 2:1 Multiplexer |
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| SY89845U | PRECISION CML RUNT PULSE ELIMINATOR 2:1 MUX WITH 1:2 FANOUT AND INTERNAL TERMINATION |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SY89840UMG TR | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 Precision 2:1 LVPECL MUX w/ RPE & FSI (I Temp, Green) RoHS:否 制造商:Micrel 產(chǎn)品:Multiplexers 邏輯系列:CMOS 位數(shù): 線路數(shù)量（輸入/輸出）:2 / 12 傳播延遲時(shí)間:350 ps, 400 ps 電源電壓-最大:2.625 V, 3.6 V 電源電壓-最小:2.375 V, 3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray |
| SY89840UMGTR | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:Precision LVPECL Runt Pulse Eliminator 2:1 Multiplexer |
| SY89841U | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:Precision CML Runt Pulse Eliminator 2:1 Multiplexer |
| SY89841UMG | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 Precision 2:1 LVDS MUX w/ RPE & FSI (I Temp, Green) RoHS:否 制造商:Micrel 產(chǎn)品:Multiplexers 邏輯系列:CMOS 位數(shù): 線路數(shù)量（輸入/輸出）:2 / 12 傳播延遲時(shí)間:350 ps, 400 ps 電源電壓-最大:2.625 V, 3.6 V 電源電壓-最小:2.375 V, 3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray |
| SY89841UMG TR | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 Precision 2:1 LVDS MUX w/ RPE & FSI (I Temp, Green) RoHS:否 制造商:Micrel 產(chǎn)品:Multiplexers 邏輯系列:CMOS 位數(shù): 線路數(shù)量（輸入/輸出）:2 / 12 傳播延遲時(shí)間:350 ps, 400 ps 電源電壓-最大:2.625 V, 3.6 V 電源電壓-最小:2.375 V, 3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray |
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