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74FST3245 データシート(PDF) 1 Page - ON Semiconductor

部品番号. 74FST3245
部品情報  8−Bit Bus Switch
ダウンロード  6 Pages
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メーカー  ONSEMI [ON Semiconductor]
ホームページ  http://www.onsemi.com
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74FST3245 Datasheet(HTML) 1 Page - ON Semiconductor

   
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© Semiconductor Components Industries, LLC, 2006
June, 2006 − Rev. 2
1
Publication Order Number:
74FST3245/D
74FST3245
8−Bit Bus Switch
The ON Semiconductor 74FST3245 is an 8−bit, high performance
switch. The device is CMOS TTL compatible when operating between
4 and 5.5 Volts. The device exhibits extremely low RON and adds
nearly zero propagation delay. The device adds no noise or ground
bounce to the system.
The device consists of an 8−bit switch. Port A is connected to Port B
when OE is low. If OE is high, the switch is high Z.
Features
RON t 4 W Typical
Less Than 0.25 ns−Max Delay Through Switch
Nearly Zero Standby Current
No Circuit Bounce
Control Inputs are TTL/CMOS Compatible
Pin−For−Pin Compatible with QS3245, FST3245, CBT3245
All Popular Packages: QSOP−20, TSSOP−20, SOIC−20
All Devices in Package TSSOP are Inherently Pb−Free*
NC
A2
A5
A4
A3
A1
A0
VCC
B1
B4
B3
B2
B0
OE
1
2
3
4
5
6
7
20
19
18
17
16
15
14
Figure 1. 20−Lead Pinout
A6
8
A7
9
GND
10
B5
13
B6
12
B7
11
2
19
9
18
11
OE
Figure 2. Logic Diagram
A0
A7
B0
B7
L
H
Input OE
Function
Connect
Disconnect
TRUTH TABLE
*For additional information on our Pb−Free strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
Description
PIN NAMES
OE1, OE2
1A, 2A
TSSOP−20
DT SUFFIX
CASE 948E
SOIC−20
DW SUFFIX
CASE 751D
MARKING
DIAGRAMS
Pin
Bus Switch Enables
Bus A
1B, 2B
Bus B
20
1
FST3245
AWLYYWW
1
20
20
1
FST
3245
ALYW
A
=
Assembly Location
L, WL
=
Wafer Lot
Y
=
Year
W, WW =
Work Week
QSOP−20
QS SUFFIX
CASE 492A
1
20
FST3245
AWLYWW
20
1
See detailed ordering and shipping information in the package
dimensions section on page 3 of this data sheet.
ORDERING INFORMATION
20
1
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