Datasheet MC74ACT350D, MC74AC350N, MC74AC350D, MC74ACT350N Datasheet (Motorola)

5-1

FACT DATA

 
  

The MC74AC350/74ACT350 is a specialized multiplexer that accepts a 4-bit
word and shifts it 0, 1, 2 or 3 places, as determined by two Select (S0, S1) 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 accomplished 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 ′AC/ACT350 can perform zero-backfill,
sign-extend or end-around (barrel) shift functions.

• Linking Inputs for Word Expansion

• 3-State Outputs for Extending Shift Range

1516 14 13 12 11 10

21 3 4 5 6 7

V

CC

9

8

O0O1OE O2O3S0S

1

I

–3I–2I–1I0I1I2I3

GND

TRUTH TABLE

Inputs Outputs

OE S

1

S

0

O

0

O

1

O

2

O

3

H X X Z Z Z Z

L L L I

0

I

1

I

2

I

3

L L H I

–1

I

0

I

1

I

2

L H L I

–2

I

–1

I

0

I

1

L H H I

–3

I

–2

I

–1

I

0

H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial





4-BIT SHIFTER

WITH 3-STATE

OUTPUTS

N SUFFIX

CASE 648-08

PLASTIC

D SUFFIX

CASE 751B-05

PLASTIC

LOGIC SYMBOL

OE

S

1

S

0

O0O1O2O

3

I–3I–2I–1I0I1I2I

3

13

9

10

15 14 12 11

1 2 3 4 5 6 7

MC74AC350 MC74ACT350

5-2

FACT DATA

FUNCTIONAL DESCRIPTION

The MC74AC350/74ACT350 is operationally equivalent to
a 4-input multiplexer with the inputs connected so that the
select code causes successive one-bit shifts of the data word.
This internal connection makes it possible to perform shifts of
0, 1, 2 or 3 places on words of any length.

A 7-bit data word is introduced at the In inputs and is shifted
according to the code applied to the select inputs S0, S1.
Outputs O0–O3 are 3-state, controlled by an active-LOW
output enable (OE

). When OE is LOW, data outputs will follow
selected data inputs; when HIGH, the data outputs will be
forced to the high-impedance state. This feature allows

shifters to be cascaded on the same output lines or to a
common bus. The shift function can be logical, with zeros
pulled in at either or both ends of the shifting field; arithmetic,
where the sign bit is repeated during a shift down; or end
around, where the data word forms a continuous loop.

LOGIC EQUATIONS

O0=S

0 S1 I0+S0 S1 I–1+S0 S1 I–2+S0 S1 I–3

O1=S

0 S1 I1+S0 S1 I0+S0 S1 I–1+S0 S1 II–2

O2=S

0 S1 I2+S0 S1 I1+S0 S1 I0+S0 S1 I–1

O3=S

0 S1 I3+S0 S1 I2+S0 S1 I1+S0 S1 I0

LOGIC DIAGRAM

I

–3

I

–2

I

–1

I0I1I2I

3

S

1

S0OE

O

0

O

1

O

2

O

3

MC74AC350 MC74ACT350

5-3

FACT DATA

APPLICATIONS

16-Bit Shift-Up 0 to 3 Places, Zero Backfill

GND

S

0

S

1

OE

S

0

S

1

OE

Y0Y1Y2Y

3

I–3I–1I0I1I2I

3

I

–2

S

0

S

1

OE

Y0Y1Y2Y

3

I–3I–1I0I1I2I

3

I

–2

S

0

S

1

OE

Y0Y1Y2Y

3

I–3I–1I0I1I2I

3

I

–2

S

0

S

1

OE

Y0Y1Y2Y

0

I–3I–1I0I1I2I

3

I

–2

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

S1S

0
L L NO SHIFT
L H SHIFT 1 PLACE

H L SHIFT 2 PLACES
H H SHIFT 3 PLACES

S

0

S

1

S

2

S

0

S

1

OE

Y0Y1Y2Y

3

I–3I–1I0I1I2I

3

I

–2

S

0

S

1

OE

Y0Y1Y2Y

3

I–3I–1I0I1I2I

3

I

–2

S

0

S

1

OE

Y0Y1Y2Y

3

I–3I–1I0I1I2I

3

I

–2

S

0

S

1

OE

Y0Y1Y2Y

3

I–3I–1I0I1I2I

3

I

–2

0 1 2 3 4 5 6 7

0 1 2 3 4 5 6 7

S

2

8-Bit End Around Shift 0 to 7 Places

S2S1S

0

S2S1S

0

L L L NO SHIFT H L H SHIFT END AROUND 5
L L H SHIFT END AROUND 1 H H L SHIFT END AROUND 6
L H L SHIFT END AROUND 2 H H H SHIFT END AROUND 7
L H H SHIFT END AROUND 3

H L L SHIFT END AROUND 4

MC74AC350 MC74ACT350

5-4

FACT DATA

13-Bit Twos Complement Scaler

S

0

S

1

OE

Y0Y1Y2Y

3

I–3I–1I0I1I2I

3

I

–2

S

0

S

1

OE

Y0Y1Y2Y

3

I–3I–1I0I1I2I

3

I

–2

S

0

S

1

OE

Y0Y1Y2Y

3

I–3I–1I0I1I2I

3

I

–2

12 11 10 9

12 11 10 9

8 7 6 5 4 3 2 1 S

8 7 6 5 4 3 2 1 S

S

0

S

1

S1S

0

SCALE

L L ÷ 8 1/8
L H ÷ 4 1/4

H L ÷ 2 1/2
H H NO CHANGE 1

MAXIMUM RATINGS*

Symbol Parameter Value Unit

V

CC

DC Supply Voltage (Referenced to GND) –0.5 to +7.0 V

V

in

DC Input Voltage (Referenced to GND) –0.5 to VCC +0.5 V

V

out

DC Output Voltage (Referenced to GND) –0.5 to VCC +0.5 V

I

in

DC Input Current, per Pin ±20 mA

I

out

DC Output Sink/Source Current, per Pin ±50 mA

I

CC

DC VCC or GND Current per Output Pin ±50 mA

T

stg

Storage Temperature –65 to +150 °C

* Maximum Ratings are those values beyond which damage to the device may occur. Functional operation should be restricted to the Recommended

Operating Conditions.

RECOMMENDED OPERATING CONDITIONS

Symbol Parameter Min Typ Max Unit

′AC 2.0 5.0 6.0

VCCSupply Voltage

′ACT 4.5 5.0 5.5

V

Vin, V

out

DC Input Voltage, Output Voltage (Ref. to GND) 0 V

CC

V

VCC @ 3.0 V 150

Input Rise and Fall Time (Note 1)
′AC Devices except Schmitt Inputs

VCC @ 4.5 V 40 ns/V

r

, t

f

′AC Devices except Schmitt Inputs

VCC @ 5.5 V 25
VCC @ 4.5 V 10

tr, t

f

Input Rise and Fall Time (Note 2)
′ACT Devices except Schmitt Inputs

VCC @ 5.5 V 8.0

ns/V

T

J

Junction Temperature (PDIP) 140 °C

T

A

Operating Ambient Temperature Range –40 25 85 °C

I

OH

Output Current — High –24 mA

I

OL

Output Current — Low 24 mA

1. Vin from 30% to 70% VCC; see individual Data Sheets for devices that differ from the typical input rise and fall times.

2. Vin from 0.8 V to 2.0 V; see individual Data Sheets for devices that differ from the typical input rise and fall times.

tr, t

f

Input Rise and Fall Time (Note 2)

MC74AC350 MC74ACT350

5-5

FACT DATA

DC CHARACTERISTICS

74AC 74AC

Symbol

Parameter

V

CC

(V)

TA = +25°C

TA =

–40°C to +85°C

Unit

Conditions

Typ Guaranteed Limits

V

IH

3.0 1.5 2.1 2.1 V

OUT

= 0.1 V

4.5 2.25 3.15 3.15 V or VCC – 0.1 V

5.5 2.75 3.85 3.85

V

IL

3.0 1.5 0.9 0.9 V

OUT

= 0.1 V

4.5 2.25 1.35 1.35 V or VCC – 0.1 V

5.5 2.75 1.65 1.65

V

OH

3.0 2.99 2.9 2.9 I

OUT

= –50 µA

4.5 4.49 4.4 4.4 V

5.5 5.49 5.4 5.4
*VIN = VIL or V

IH

3.0 2.56 2.46

–12 mA

4.5 3.86 3.76

V

I

OH

–24 mA

5.5 4.86 4.76 –24 mA

V

OL

3.0 0.002 0.1 0.1 I

OUT

= 50 µA

4.5 0.001 0.1 0.1 V

5.5 0.001 0.1 0.1
*VIN = VIL or V

IH

3.0 0.36 0.44

12 mA

4.5 0.36 0.44

V

I

OL

24 mA

5.5 0.36 0.44 24 mA

I

IN

5.5

±0.1

±1.0

µA

VI = VCC, GND

I

OZ

VI (OE) = VIL, V

IH

5.5 ±0.5 ±5.0 µA VI = VCC, GND
VO = VCC, GND

I

OLD

5.5 75 mA V

OLD

= 1.65 V Max

I

OHD

Output Current

5.5 –75 mA V

OHD

= 3.85 V Min

I

CC

5.5

8.080µA

VIN = VCC or GND

* All outputs loaded; thresholds on input associated with output under test.
†Maximum test duration 2.0 ms, one output loaded at a time.
Note: IIN and ICC @ 3.0 V are guaranteed to be less than or equal to the respective limit @ 5.5 V VCC.

Minimum High Level
Input Voltage

Maximum Low Level
Input Voltage

Minimum High Level
Output Voltage

Maximum Low Level
Output Voltage

Maximum Input
Leakage Current

Maximum
3-State
Current

†Minimum Dynamic

Maximum Quiescent
Supply Current

MC74AC350 MC74ACT350

5-6

FACT DATA

AC CHARACTERISTICS (For Figures and Waveforms — See Section 3)

74AC 74AC

Symbol

Parameter

VCC*

(V)

TA = +25°C

CL = 50 pF

TA = –40°C

to +85°C

CL = 50 pF

Unit

Fig.

No.

Min Typ Max Min Max

Propagation Delay

3.3 4.0 12.5 3.0 13.5

t

PLH

In to O

n

5.0 3.0 8.5 2.5 9.5

ns

3-5

Propagation Delay

3.3 4.0 12.5 3.0 13.5

t

PHL

In to O

n

5.0 3.0 8.5 2.5 9.5

ns

3-5

Propagation Delay

3.3 5.0 15.5 4.0 17.5

t

PLH

Sn to O

n

5.0 3.5 11.0 2.5 12.0

ns

3-6

Propagation Delay

3.3 5.0 15.5 4.5 17.5

t

PHL

Sn to O

n

5.0 3.5 11.0 3.0 12.0

ns

3-6

3.3 3.5 8.5 3.0 9.0

t

PZH

Output Enable to O

n

5.0 2.5 6.0 2.0 6.5

ns

3-7

3.3 3.5 11.0 2.5 12.0

t

PZL

Output Enable to O

n

5.0 2.5 7.5 2.0 8.0

ns

3-8

3.3 5.0 9.5 4.5 10.0

t

PHZ

Output Enable to O

n

5.0 4.5 8.0 4.0 8.5

ns

3-7

3.3 3.0 6.5 2.5 7.0

t

PLZ

Output Enable to O

n

5.0 2.5 6.0 2.0 6.5

ns

3-8

* Voltage Range 3.3 V is 3.3 V ±0.3 V.

Voltage Range 5.0 V is 5.0 V ±0.5 V.

MC74AC350 MC74ACT350

5-7

FACT DATA

DC CHARACTERISTICS

74ACT 74ACT

Symbol

Parameter

V

CC

(V)

TA = +25°C

TA =

–40°C to +85°C

Unit

Conditions

Typ Guaranteed Limits

V

IH

4.5 1.5 2.0 2.0

V

OUT

= 0.1 V

5.5 1.5 2.0 2.0

V

or VCC – 0.1 V

V

IL

4.5 1.5 0.8 0.8

V

OUT

= 0.1 V

5.5 1.5 0.8 0.8

V

or VCC – 0.1 V

V

OH

4.5 4.49 4.4 4.4

I

OUT

= –50 µA

5.5 5.49 5.4 5.4

V

*VIN = VIL or V

IH

4.5 3.86 3.76 V

–24 mA

5.5 4.86 4.76

I

OH

–24 mA

V

OL

4.5 0.001 0.1 0.1

I

OUT

= 50 µA

5.5 0.001 0.1 0.1

V

*VIN = VIL or V

IH

4.5 0.36 0.44 V

24 mA

5.5 0.36 0.44

I

OL

24 mA

I

IN

5.5

±0.1

±1.0

µA

VI = VCC, GND

∆I

CCT

Additional Max. ICC/Input 5.5 0.6 1.5 mA VI = VCC – 2.1 V

I

OZ

VI (OE) = VIL, V

IH

5.5 ±0.5 ±5.0 µA VI = VCC, GND
VO = VCC, GND

I

OLD

5.5 75 mA V

OLD

= 1.65 V Max

I

OHD

Output Current

5.5 –75 mA V

OHD

= 3.85 V Min

I

CC

5.5

8.080µA

VIN = VCC or GND

* All outputs loaded; thresholds on input associated with output under test.
†Maximum test duration 2.0 ms, one output loaded at a time.

Minimum High Level
Input Voltage

Maximum Low Level
Input Voltage

Minimum High Level
Output Voltage

Maximum Low Level
Output Voltage

Maximum Input
Leakage Current

Maximum
3-State
Current

†Minimum Dynamic

Maximum Quiescent
Supply Current

MC74AC350 MC74ACT350

5-8

FACT DATA

AC CHARACTERISTICS (For Figures and Waveforms — See Section 3)

74ACT 74ACT

Symbol

Parameter

VCC*

(V)

TA = +25°C

CL = 50 pF

TA = –40°C

to +85°C

CL = 50 pF

Unit

Fig.

No.

Min Typ Max Min Max

t

PLH

5.0

4.0

11.5

3.0

13.5ns3-6

t

PHL

5.0

4.0

11.5

3.0

13.5ns3-6

t

PLH

5.0

4.5

13.0

3.5

15.5ns3-6

t

PHL

5.0

4.5

13.0

3.5

15.5ns3-6

t

PZH

Output Enable to O

n

5.0 4.0 9.0 3.0 10.0 ns 3-7

t

PZL

Output Enable to O

n

5.0 4.0 10.0 3.0 11.5 ns 3-8

t

PHZ

Output Enable to O

n

5.0 4.0 10.0 3.0 11.0 ns 3-7

t

PLZ

Output Enable to O

n

5.0 4.0 8.0 3.0 9.0 ns 3-8

* Voltage Range 5.0 V is 5.0 V ±0.5 V.

CAPACITANCE

Symbol Parameter

Value

Typ

Unit Test Conditions

C

IN

Input Capacitance 4.5 pF VCC = 5.0 V

C

PD

Power Dissipation Capacitance 40.0 pF VCC = 5.0 V

Propagation Delay
In to O

n

Propagation Delay
In to O

n

Propagation Delay
Sn to O

n

Propagation Delay
Sn to O

n

MC74AC350 MC74ACT350

5-9

FACT DATA

OUTLINE DIMENSIONS

N SUFFIX

PLASTIC DIP PACKAGE

CASE 648–08

ISSUE R

D SUFFIX

PLASTIC SOIC PACKAGE

CASE 751B–05

ISSUE J

NOTES:

1. DIMENSIONING AND TOLERANCING PER
ANSI Y14.5M, 1982.

2. CONTROLLING DIMENSION: MILLIMETER.

3. DIMENSIONS A AND B DO NOT INCLUDE
MOLD PROTRUSION.

4. MAXIMUM MOLD PROTRUSION 0.15 (0.006)
PER SIDE.

5. DIMENSION D DOES NOT INCLUDE DAMBAR
PROTRUSION. ALLOWABLE DAMBAR
PROTRUSION SHALL BE 0.127 (0.005) TOTAL
IN EXCESS OF THE D DIMENSION AT
MAXIMUM MATERIAL CONDITION.

1 8

16 9

SEATING

PLANE

F

J

M

R

X 45

_

G

8 PLP

–B–

–A–

M

0.25 (0.010) B

S

–T–

D

K

C

16 PL

S

B

M

0.25 (0.010) A

S

T

DIM MIN MAX MIN MAX

INCHESMILLIMETERS

A 9.80 10.00 0.386 0.393
B 3.80 4.00 0.150 0.157
C 1.35 1.75 0.054 0.068
D 0.35 0.49 0.014 0.019
F 0.40 1.25 0.016 0.049
G 1.27 BSC 0.050 BSC
J 0.19 0.25 0.008 0.009
K 0.10 0.25 0.004 0.009
M 0 7 0 7
P 5.80 6.20 0.229 0.244
R 0.25 0.50 0.010 0.019

_ _ _ _

NOTES:

1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.

2. CONTROLLING DIMENSION: INCH.

3. DIMENSION L TO CENTER OF LEADS WHEN
FORMED PARALLEL.

4. DIMENSION B DOES NOT INCLUDE MOLD FLASH.

5. ROUNDED CORNERS OPTIONAL.

–A–

B

F

C

S

H

G

D

J

L

M

16 PL

SEATING

1 8

916

K

PLANE

–T–

M

A

M

0.25 (0.010) T

DIM MIN MAX MIN MAX

MILLIMETERSINCHES

A 0.740 0.770 18.80 19.55
B 0.250 0.270 6.35 6.85
C 0.145 0.175 3.69 4.44
D 0.015 0.021 0.39 0.53
F 0.040 0.70 1.02 1.77
G 0.100 BSC 2.54 BSC
H 0.050 BSC 1.27 BSC

J 0.008 0.015 0.21 0.38
K 0.110 0.130 2.80 3.30
L 0.295 0.305 7.50 7.74
M 0 10 0 10
S 0.020 0.040 0.51 1.01

____

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MC74AC350/D

*MC74AC350/D*

◊