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74F350 4-Bit Shifter with 3-STATE Outputs

April 1988

Revised August 1999

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

s

Linking inputs for word expansion

s

3-STATE outputs for extending shift range

Ordering Code:

Order Number

74F350SC

74F350SJ

74F350PC

Package Number

M16A

M16D

N16E

Package Description

16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow

16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide

16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide

Devices also available in Tape and Reel. Specify by appending the suffix letter 鈥淴鈥?to the ordering code.

Logic Symbols

Connection Diagram

IEEE/IEC

Truth Table

Inputs

OE

H

L

L

L

L

S

1

X

L

L

H

H

S

0

X

L

H

L

H

O

0

Z

I

0

I

鈭?

I

鈭?

I

鈭?

Outputs

O

1

Z

I

1

I

0

I

鈭?

I

鈭?

O

2

Z

I

2

I

1

I

0

I

鈭?

O

3

Z

I

3

I

2

I

1

I

0

H

=

HIGH Voltage Level

L

=

LOW Voltage Level

X

=

Immaterial

Z

=

High Impedance

漏 1999 Fairchild Semiconductor Corporation

DS009518

www.fairchildsemi.com

next

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