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參數(shù)資料
| 型號： | IDTQS34XST253Q38 |
| 廠商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分類： | 編、解碼器及復(fù)用、解復(fù)用 |
| 英文描述： | OCTAL 1 LINE TO 4 LINE MULTIPLEXER AND DEMUX/DECODER, TRUE OUTPUT, PDSO80 |
| 封裝： | 0.150 INCH, MILLIPAK, DIP-80 |
| 文件頁數(shù)： | 10/10頁 |
| 文件大?。?/td> | 128K |
| 代理商： | IDTQS34XST253Q38 |
9
IDTQS34XST253
HIGH-SPEED CMOS SYNCHROSWITCH 32:8 MUX/DEMUX
INDUSTRIALTEMPERATURERANGE
IBH
+500
Sinking
Current
( + )
IBHL
IBH
IBHH
+60
+20
– 60
– 20
+60 IBHL
0.8V
2V
VIH
– 60 IBHL
V IL
Sourcing
Current
( – )
IBH
– 500
Vcc
+20 IBH
– 20 IBH
Voltage
VT
V-I CHARACTERISTICS OF BUS-HOLD CIRCUIT
VT
≡≡≡≡≡ Threshold Voltage ≈ 1.5V
VIL
≈ .8
VIH
≈ 2V
ACTIVE TERMINATOR OR BUS-HOLD CIRCUIT
The Active Terminator circuit, also known as the bus-hold circuit, is configured as a “weak latch” with positive feedback. When connected to a
TTL or CMOS input port, the bus-hold circuit holds the last logic state at the input when the input is “disconnected” from the driver. When the output
of a device connected to such an input attempts a logic level transition, it will overdrive the bus-hold circuit. The primary benefit of a bus-hold circuit
is that it prevents CMOS inputs from floating, a situation which should be avoided to prevent spurious switching of inputs and unnecessary power
dissipation. Bus-hold is a better solution than the traditional approach of using resistive termination to Vcc or GND to prevent bus floating, because
the bus-hold circuit does not consume any static power.
This figure shows the input V-I characteristics of a typical bus-hold implementation. The input characteristics resemble a resistor. As the input
voltage is increased from 0 volts, the input “sink” current increases linearly. When the TTL threshold of the circuit is reached (typically 1.5 volts), the
latch changes the logic state due to positive feedback and the direction of the current is reversed. As the input voltage is further increased towards
Vcc, the input “source” current begins to decrease, reaching the lowest level at VIN = Vcc.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| IDTQS34XVH2245 | 制造商:IDT 制造商全稱:Integrated Device Technology 功能描述:QUICKSWITCH㈢ PRODUCTS 2.5V / 3.3V 32-BIT HIGH BANDWIDTH BUS SWITCH |
| IDTQS34XVH2245Q3 | 制造商:Integrated Device Technology Inc 功能描述: |
| IDTQS34XVH2245Q3G | 功能描述:IC BUS SWITCH 32BIT CMOS 80QVSOP RoHS:是 類別:集成電路 (IC) >> 邏輯 - 信號開關(guān)，多路復(fù)用器，解碼器 系列:34XVH 標(biāo)準(zhǔn)包裝:1 系列:74LVC 類型:解碼器/多路分解器 電路:1 x 2:4 獨(dú)立電路:2 輸出電流高，低:24mA，24mA 電壓電源:單電源 電源電壓:1.65 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:16-SOIC（0.209"，5.30mm 寬） 供應(yīng)商設(shè)備封裝:16-SO 包裝:Digi-Reel® 其它名稱:296-28947-6 |
| IDTQS34XVH2245Q3G8 | 功能描述:IC EXCHANGE SW 32BIT BUS 80QVSOP RoHS:是 類別:集成電路 (IC) >> 邏輯 - 信號開關(guān)，多路復(fù)用器，解碼器 系列:34XVH 標(biāo)準(zhǔn)包裝:48 系列:74VHC 類型:多路復(fù)用器 電路:4 x 2:1 獨(dú)立電路:1 輸出電流高，低:8mA，8mA 電壓電源:單電源 電源電壓:2 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:16-SOIC 包裝:管件 |
| IDTQS34XVH245 | 制造商:IDT 制造商全稱:Integrated Device Technology 功能描述:QUICKSWITCH PRODUCTS 2.5V / 3.3V 32-BIT HIGH BANDWIDTH BUS SWITCH |
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