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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
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メーカー  ONSEMI [ON Semiconductor]
ホームページ  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

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

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© Semiconductor Components Industries, LLC, 2001
August, 2001 – Rev. 0
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.
R
ON
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
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
L
H
Input OE
Function
Connect
Disconnect
TRUTH TABLE
2
19
9
18
11
OE
Figure 2. Logic Diagram
A0
A7
B0
B7
Description
PIN NAMES
OE1, OE2
1A, 2A
http://onsemi.com
Device
Package
Shipping
ORDERING INFORMATION
74FST3245DW
SO–20
38 Units/Rail
74FST3245DWR2
SO–20
74FST3245DT
TSSOP–20
1000 Units/Reel
75 Units/Rail
74FST3245DTR2
TSSOP–20
2500 Units/Reel
74FST3245QS
QSOP–20
55 Units/Rail
74FST3245QSR
QSOP–20
2500 Units/Reel
TSSOP–20
DT SUFFIX
CASE 948E
SO–20
DW SUFFIX
CASE 751D
20
MARKING
DIAGRAMS
Pin
Bus Switch Enables
Bus A
1B, 2B
Bus B
20
1
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


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