參數(shù)資料
型號(hào): FST32245WM
廠商: FAIRCHILD SEMICONDUCTOR CORP
元件分類(lèi): 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: 0.300 INCH, MS-013, SOIC-20
文件頁(yè)數(shù): 1/5頁(yè)
文件大小: 170K
代理商: FST32245WM
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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FST32245WMX 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:Bus Switch
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FST32253MTC 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 Multi/Demultiplexer Dual 4:1 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
FST32253MTCX 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 Multi/Demultiplexer Dual 4:1 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