© 1999 Fairchild Semiconductor Corporation DS009518 www.fairchildsemi.com
April 1988
Revised August 1999
7
4F350 4-Bi
t Shif
ter

wi
th 3-ST
A
T
E
Out
puts
74F350
4-Bit Shifter with 3-STATE Outputs
General Description
The 74F350 is a specialized multiplexer that accepts a 4-bit
word and shifts it 0, 1, 2 or 3 places, as determined by two
Select (S
0
, S
1
) inputs. For expansion to longer words, three
linking inputs are provided for lower-order bits; thus two
packages can shift an 8-bit word, four packages a 16-bit
word, etc. Shifting by more than three places is accom-
plished by paralleling the 3-STATE outputs of different
packages and using the Output Enable (OE ) inputs as a
third Select level. With appropriate interconnections, the
74F350 can perform zero-backfill, sign-extend or end-
around (barrel) shift functions.
Features
a73 Linking inputs for word expansion
a73 3-STATE outputs for extending shift range

Ordering Code:
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Logic Symbols
IEEE/IEC
Connection Diagram
Truth Table
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
Z = High Impedance
Order Number Package Number Package Description
74F350SC M16A 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow
74F350SJ M16D 16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74F350PC N16E 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Inputs Outputs
OE S
1
S
0
O
0
O
1
O
2
O
3
HXXZZZZ
LLLI
0
I
1
I
2
I
3
LLHI
−1
I
0
I
1
I
2
LHLI
−2
I
−1
I
0
I
1
LHHI
−3
I
−2
I
−1
I
0