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74FST3244 Datenblatt(PDF) 1 Page - ON Semiconductor

Teilenummer 74FST3244
Bauteilbeschribung  8?묪it Bus Switch
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Hersteller  ONSEMI [ON Semiconductor]
Direct Link  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

74FST3244 Datenblatt(HTML) 1 Page - ON Semiconductor

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© Semiconductor Components Industries, LLC, 2006
June, 2006 − Rev. 2
1
Publication Order Number:
74FST3244/D
74FST3244
8−Bit Bus Switch
The ON Semiconductor 74FST3244 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 two 4−bit switches with separate
Output/Enable (OE) pins. 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 QS3244, FST3244, CBT3244
All Popular Packages: QSOP−20, TSSOP−20, SOIC−20
All Devices in Package TSSOP are Inherently Pb−Free*
OE1
1A1
2B1
1A2
2B2
2B3
1A0
VCC
2A3
1B2
2A2
1B1
1B0
OE2
1
2
3
4
5
6
7
20
19
18
17
16
15
14
Figure 1. 20−Lead Pinout
1A3
8
2B0
9
GND
10
2A1
13
1B3
12
2A0
11
OE1
L
Inputs
L
H
OE2
L
H
L
HH
1A, 1B
1A = 1B
1A = 1B
Inputs/Outputs
Z
Z
2A, 2B
2A = 2B
Z
2A = 2B
Z
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
QSOP−20
QS SUFFIX
CASE 492A
SOIC−20
DW SUFFIX
CASE 751D
MARKING
DIAGRAMS
Pin
Bus Switch Enables
Bus A
1B, 2B
Bus B
20
1
FST3244
AWLYYWW
1
20
20
1
FST
3244
ALYW
A
=
Assembly Location
L, WL
=
Wafer Lot
Y
=
Year
W, WW =
Work Week
1
20
FST3244
AWLYWW
20
1
See detailed ordering and shipping information in the package
dimensions section on page 2 of this data sheet.
ORDERING INFORMATION
20
1
http://onsemi.com


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