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參數資料
| 型號： | FST32245QSC |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 通用總線功能 |
| 英文描述： | Octal Bus Switch with 25з Series Resistor in Outputs (Preliminary) |
| 中文描述： | CBT/FST/QS/5C/B SERIES, 8-BIT DRIVER, TRUE OUTPUT, PDSO20 |
| 封裝： | 0.150 INCH, MO-137, QSOP-20 |
| 文件頁數： | 1/5頁 |
| 文件大?。?/td> | 170K |
| 代理商： | FST32245QSC |
Preliminary
2001 Fairchild Semiconductor Corporation
DS500473
www.fairchildsemi.com
June 2001
Revised June 2001
F
FST32245
Octal Bus Switch with 25
Series Resistor in Outputs
(Preliminary)
General Description
The Fairchild Switch FST32245 provides 8-bits of high-
speed CMOS TTL-compatible bus switching in a standard
’245 pin-out. The low On Resistance of the switch allows
inputs to be connected to outputs without adding propaga-
tion delay or generating additional ground bounce noise.
The device is organized as an 8-bit switch. When OE is
LOW, the switch is ON and Port A is connected to Port B.
When OE is HIGH, the switch is OPEN and a high-imped-
ance state exists between the two ports.
The FST32245 has an equivalent 25
series resistors to
reduce signal-reflection noise, eliminating the need for
external terminating resistors.
Features
I
25
switch connection between two ports
I
Minimal propagation delay through the switch
I
Low l
CC
I
Zero bounce in flow-through mode
I
Control inputs compatible with TTL level
Ordering Code:
Devices also available in Tape and Reel. Specify by appending the suffix letter
“
X
”
to the ordering code.
Logic Diagram
Pin Descriptions
Connection Diagram
Truth Table
Order Number
FST32245WM
FST32245QSC
FST32245MTC
Package Number
M20B
MQA20
MTC20
Package Description
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
20-Lead Quarter Size Outline Package (QSOP), JEDEC MO-137, 0.150" Wide
20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
Pin Name
Description
OE
A
B
NC
Bus Switch Enable
Bus A
Bus B
No Connect
Input OE
Function
L
Connect
H
Disconnect
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| FST32245 | Octal Bus Switch with 25з Series Resistor in Outputs (Preliminary) |
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| FST32253QSC | Dual 4:1 Multiplexer/Demultiplexer Bus Switch with 25з Series Resistor in Outputs |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| FST32245QSCX | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Bus Switch |
| FST32245WM | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Octal Bus Switch with 25з Series Resistor in Outputs (Preliminary) |
| FST32245WMX | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Bus Switch |
| FST32253 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Dual 4:1 Multiplexer/Demultiplexer Bus Switch with 25з Series Resistor in Outputs |
| FST32253M | 功能描述:編碼器、解碼器、復用器和解復用器 Multi/Demultiplexer Dual 4:1 RoHS:否 制造商:Micrel 產品:Multiplexers 邏輯系列:CMOS 位數: 線路數量（輸入/輸出）:2 / 12 傳播延遲時間: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 安裝風格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray |
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