鈥?/div>
All Popular Packages: QSOP鈥?6, TSSOP鈥?6, SOIC鈥?6
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MARKING
DIAGRAMS
16
16
1
SO鈥?6
D SUFFIX
CASE 751B
FST3251
AWLYWW
1
16
16
1
TSSOP鈥?6
DT SUFFIX
CASE 948F
FST
3251
ALYW
1
16
S3251
ALYW
B4
B3
B2
B1
A
NC
OE
GND
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
V
CC
B5
B6
B7
B8
16
1
S0
S1
S2
QSOP鈥?6
QS SUFFIX
CASE 492
A
L, WL
Y
W, WW
=
=
=
=
1
Assembly Location
Wafer Lot
Year
Work Week
QSOP/SSOP/TSSOP
TOP VIEW
Inputs
OE
L
L
L
L
L
L
L
L
H
S2
L
L
L
L
H
H
H
H
X
S1
L
L
H
H
L
L
H
H
X
S0
L
H
L
H
L
H
L
H
X
Function
A Port = B1 Port
A Port = B2 Port
A Port = B3 Port
A Port = B4 Port
A Port = B5 Port
A Port = B6 Port
A Port = B7 Port
A Port = B8 Port
Disconnect
S
0
, S
1
A
PIN NAMES
Pin
OE
1
, OE
2
Description
Bus Switch Enables
Select Inputs
Bus A
Bus B
B
1
, B
2
, B
3
, B
4
ORDERING INFORMATION
Device
74FST3251D
74FST3251DR2
74FST3251DT
74FST3251DTR2
74FST3251QS
74FST3251QSR
Package
SO鈥?6
SO鈥?6
TSSOP鈥?6
TSSOP鈥?6
QSOP鈥?6
QSOP鈥?6
Shipping
48 Units/Rail
2500 Units/Reel
96 Units/Rail
2500 Units/Reel
96 Units/Rail
2500 Units/Reel
NOTE: H = HIGH Voltage Level, L = LOW Voltage Level, X = Don鈥檛 Care
漏
Semiconductor Components Industries, LLC, 2002
1
January, 2002 鈥?Rev. 1
Publication Order Number:
74FST3251/D