參數(shù)資料
型號(hào): 74FST3345QSR
廠商: ON SEMICONDUCTOR
元件分類: 通用總線功能
英文描述: 8-Bit Bus Switch
中文描述: CBT/FST/QS/5C/B SERIES, 8-BIT DRIVER, TRUE OUTPUT, PDSO20
封裝: QSOP-20
文件頁數(shù): 1/6頁
文件大?。?/td> 87K
代理商: 74FST3345QSR
Semiconductor Components Industries, LLC, 2005
January, 2005 Rev. 1
1
Publication Order Number:
74FST3345/D
74FST3345
8Bit Bus Switch
The ON Semiconductor 74FST3345 is an 8bit, high performance
switch. The device is CMOS TTL compatible when operating between
4 and 5.5 Volts. The device exhibits extremely low R
ON
and adds
nearly zero propagation delay. The device adds no noise or ground
bounce to the system.
The device consists of an 8bit switch with two Output/Enable pins
(OE and OE).
Features
R
ON
Less Than 0.25 nsMax Delay Through Switch
Nearly Zero Standby Current
No Circuit Bounce
Control Inputs are TTL/CMOS Compatible
PinForPin Compatible with QS3345, FST3345, CBT3345
All Popular Packages: QSOP20, TSSOP20, SOIC20
All Devices in Package TSSOP are Inherently PbFree*
4 Typical
OE
A
0
A
2
A
3
A
5
A
6
A
7
A
4
A
1
V
CC
OE
B
1
B
2
B
4
B
5
B
6
B
7
B
3
B
0
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
Figure 1. 20Lead Pinout
GND
OE
X
Inputs
H
L
OE
L
X
H
Connect
Connect
Disconnect
Function
TRUTH TABLE
9
1
19
11
OE
OE
Figure 2. Logic Diagram
A
7
B
7
2
18
A
0
B
0
*For additional information on our PbFree strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
Description
Bus Switch Enables
PIN NAMES
OE
1
, OE
2
1A, 2A
TSSOP20
DT SUFFIX
CASE 948E
SOIC20
DW SUFFIX
CASE 751D
MARKING
DIAGRAMS
Pin
Bus A
1B, 2B
Bus B
20
1
FST3345
AWLYYWW
1
20
20
1
FST
3345
ALYW
A
L, WL
Y
W, WW = Work Week
= Assembly Location
= Wafer Lot
= Year
QSOP20
QS SUFFIX
CASE 492A
1
20
FST3345
AWLYWW
20
1
20
1
See detailed ordering and shipping information in the package
dimensions section on page 3 of this data sheet.
ORDERING INFORMATION
http://onsemi.com
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