MOTOROLA MC74ACT350 4-bit shifter with 3-state output Datasheet

 4-BIT SHIFTER
WITH 3-STATE
OUTPUTS
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
VCC
16
O0
15
O1
14
OE
13
O2
12
O3
11
S0
10
N SUFFIX
CASE 648-08
PLASTIC
S1
9
D SUFFIX
CASE 751B-05
PLASTIC
1
2
3
4
5
6
7
8
I–3
I–2
I–1
I0
I1
I2
I3
GND
LOGIC SYMBOL
TRUTH TABLE
Inputs
1
Outputs
OE
S1
S0
O0
O1
O2
O3
H
L
L
L
L
X
L
L
H
H
X
L
H
L
H
Z
I0
I–1
I–2
I–3
Z
I1
I0
I–1
I–2
Z
I2
I1
I0
I–1
Z
I3
I2
I1
I0
3
4
9
S0 I–3 I–2 I–1 I0
S1
13
OE
10
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
2
5
5-1
7
I1 I2 I3
O0 O1 O2 O3
15 14 12 11
FACT DATA
6
MC74AC350 MC74ACT350
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=S0 S1 I0+S0 S1 I–1+S0 S1 I–2+S0 S1 I–3
O1=S0 S1 I1+S0 S1 I0+S0 S1 I–1+S0 S1 II–2
O2=S0 S1 I2+S0 S1 I1+S0 S1 I0+S0 S1 I–1
O3=S0 S1 I3+S0 S1 I2+S0 S1 I1+S0 S1 I0
LOGIC DIAGRAM
I–3
I–2
O0
I–1
O1
I0
O2
FACT DATA
5-2
I1
I2
O3
I3
S1
S0
OE
MC74AC350 MC74ACT350
APPLICATIONS
16-Bit Shift-Up 0 to 3 Places, Zero Backfill
0 1 2 3
4 5 6 7
8 9 10 11
12 13 14 15
I–3 I–2 I–1 I0 I1 I2 I3
S0
S1
I–3 I–2 I–1 I0 I1 I2 I3
S0
S1
I–3 I–2 I–1 I0 I1 I2 I3
S0
S1
I–3 I–2 I–1 I0 I1 I2 I3
S0
S1
OE
Y0
Y1
Y2
Y3
OE
Y0
Y1
Y2
Y3
OE
Y0
Y1
Y2
Y3
OE
Y0
Y1
Y2
Y0
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
S1
S0
L
L
NO SHIFT
GND
S0
S1
OE
L
H
SHIFT 1 PLACE
H
L
SHIFT 2 PLACES
H
H
SHIFT 3 PLACES
8-Bit End Around Shift 0 to 7 Places
0 1 2 3
4 5 6 7
I–3 I–2 I–1 I0 I1 I2 I3
S0
S1
I–3 I–2 I–1 I0 I1 I2 I3
S0
S1
I–3 I–2 I–1 I0 I1 I2 I3
S0
S1
I–3 I–2 I–1 I0 I1 I2 I3
S0
S1
OE
Y0
Y1
Y2
Y3
OE
Y0
OE
Y0
Y1
Y2
Y3
OE
Y0
0
1
2
3
4
5
6
7
S2
S1
S0
S2
S1
S0
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
Y1
Y2
Y3
S0
S1
S2
S2
FACT DATA
5-3
Y1
Y2
Y3
MC74AC350 MC74ACT350
13-Bit Twos Complement Scaler
8 7 6 5
12 11 10 9
4 3 2 1
S
I–3 I–2 I–1 I0 I1 I2 I3
S0
S1
I–3 I–2 I–1 I0 I1 I2 I3
S0
S1
I–3 I–2 I–1 I0 I1 I2 I3
S0
S1
OE
Y0
Y1
Y2
Y3
OE
Y0
Y1
Y2
Y3
OE
Y0
Y1
Y2
Y3
12
11
10
9
8
7
6
5
4
3
2
1
S0
S1
S1 S0
S
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
–0.5 to +7.0
V
V
VCC
DC Supply Voltage (Referenced to GND)
Vin
DC Input Voltage (Referenced to GND)
–0.5 to VCC +0.5
Vout
DC Output Voltage (Referenced to GND)
–0.5 to VCC +0.5
V
Iin
DC Input Current, per Pin
±20
mA
Iout
DC Output Sink/Source Current, per Pin
±50
mA
ICC
DC VCC or GND Current per Output Pin
±50
mA
Tstg
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
VCC
Supply Voltage
Vin, Vout
DC Input Voltage, Output Voltage (Ref. to GND)
tr, tf
Input Rise and Fall Time (Note 1)
′AC Devices except Schmitt Inputs
Min
Typ
Max
′AC
2.0
5.0
6.0
′ACT
4.5
5.0
5.5
0
VCC
VCC @ 3.0 V
150
VCC @ 4.5 V
40
VCC @ 5.5 V
25
VCC @ 4.5 V
10
VCC @ 5.5 V
8.0
Unit
V
V
ns/V
tr, tf
Input Rise and Fall Time (Note 2)
′ACT Devices except Schmitt Inputs
TJ
Junction Temperature (PDIP)
TA
Operating Ambient Temperature Range
85
°C
IOH
Output Current — High
–24
mA
IOL
Output Current — Low
24
mA
ns/V
140
–40
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.
FACT DATA
5-4
25
°C
MC74AC350 MC74ACT350
DC CHARACTERISTICS
Symbol
Parameter
VCC
(V)
74AC
74AC
TA = +25°C
TA =
–40°C to +85°C
Typ
VIH
VIL
VOH
Conditions
Guaranteed Limits
Minimum High Level
Input Voltage
3.0
4.5
5.5
1.5
2.25
2.75
2.1
3.15
3.85
2.1
3.15
3.85
V
VOUT = 0.1 V
or VCC – 0.1 V
Maximum Low Level
Input Voltage
3.0
4.5
5.5
1.5
2.25
2.75
0.9
1.35
1.65
0.9
1.35
1.65
V
VOUT = 0.1 V
or VCC – 0.1 V
Minimum High Level
Output Voltage
3.0
4.5
5.5
2.99
4.49
5.49
2.9
4.4
5.4
2.9
4.4
5.4
V
2.56
3.86
4.86
2.46
3.76
4.76
0.1
0.1
0.1
0.1
0.1
0.1
3.0
4.5
5.5
0.36
0.36
0.36
0.44
0.44
0.44
3.0
4.5
5.5
VOL
Unit
Maximum Low Level
Output Voltage
3.0
4.5
5.5
0.002
0.001
0.001
IOUT = –50 µA
V
*VIN = VIL or VIH
–12 mA
IOH
–24 mA
–24 mA
IOUT = 50 µA
V
V
*VIN = VIL or VIH
12 mA
IOL
24 mA
24 mA
IIN
Maximum Input
Leakage Current
5.5
±0.1
±1.0
µA
VI = VCC, GND
IOZ
Maximum
3-State
Current
5.5
±0.5
±5.0
µA
VI (OE) = VIL, VIH
VI = VCC, GND
VO = VCC, GND
5.5
75
mA
VOLD = 1.65 V Max
5.5
–75
mA
VOHD = 3.85 V Min
80
µA
VIN = VCC or GND
IOLD
IOHD
ICC
†Minimum Dynamic
Output Current
Maximum Quiescent
Supply Current
5.5
8.0
* 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.
FACT DATA
5-5
MC74AC350 MC74ACT350
AC CHARACTERISTICS (For Figures and Waveforms — See Section 3)
Symbol
Parameter
VCC*
(V)
Min
74AC
74AC
TA = +25°C
CL = 50 pF
TA = –40°C
to +85°C
CL = 50 pF
Typ
Max
Min
Max
Unit
Fig.
No.
tPLH
Propagation Delay
In to On
3.3
5.0
4.0
3.0
12.5
8.5
3.0
2.5
13.5
9.5
ns
3-5
tPHL
Propagation Delay
In to On
3.3
5.0
4.0
3.0
12.5
8.5
3.0
2.5
13.5
9.5
ns
3-5
tPLH
Propagation Delay
Sn to On
3.3
5.0
5.0
3.5
15.5
11.0
4.0
2.5
17.5
12.0
ns
3-6
tPHL
Propagation Delay
Sn to On
3.3
5.0
5.0
3.5
15.5
11.0
4.5
3.0
17.5
12.0
ns
3-6
tPZH
Output Enable to On
3.3
5.0
3.5
2.5
8.5
6.0
3.0
2.0
9.0
6.5
ns
3-7
tPZL
Output Enable to On
3.3
5.0
3.5
2.5
11.0
7.5
2.5
2.0
12.0
8.0
ns
3-8
tPHZ
Output Enable to On
3.3
5.0
5.0
4.5
9.5
8.0
4.5
4.0
10.0
8.5
ns
3-7
tPLZ
Output Enable to On
3.3
5.0
3.0
2.5
6.5
6.0
2.5
2.0
7.0
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.
FACT DATA
5-6
MC74AC350 MC74ACT350
DC CHARACTERISTICS
Symbol
Parameter
VCC
(V)
74ACT
74ACT
TA = +25°C
TA =
–40°C to +85°C
Typ
Guaranteed Limits
Unit
Conditions
VIH
Minimum High Level
Input Voltage
4.5
5.5
1.5
1.5
2.0
2.0
2.0
2.0
V
VOUT = 0.1 V
or VCC – 0.1 V
VIL
Maximum Low Level
Input Voltage
4.5
5.5
1.5
1.5
0.8
0.8
0.8
0.8
V
VOUT = 0.1 V
or VCC – 0.1 V
VOH
Minimum High Level
Output Voltage
4.5
5.5
4.49
5.49
4.4
5.4
4.4
5.4
V
3.86
4.86
3.76
4.76
0.1
0.1
0.1
0.1
4.5
5.5
0.36
0.36
0.44
0.44
V
*VIN = VIL or VIH
24 mA
IOL
24 mA
±0.1
±1.0
µA
VI = VCC, GND
1.5
mA
VI = VCC – 2.1 V
±5.0
µA
VI (OE) = VIL, VIH
VI = VCC, GND
VO = VCC, GND
5.5
75
mA
VOLD = 1.65 V Max
5.5
–75
mA
VOHD = 3.85 V Min
80
µA
VIN = VCC or GND
4.5
5.5
VOL
Maximum Low Level
Output Voltage
4.5
5.5
IIN
Maximum Input
Leakage Current
5.5
∆ICCT
Additional Max. ICC/Input
5.5
IOZ
Maximum
3-State
Current
5.5
IOLD
IOHD
ICC
†Minimum Dynamic
Output Current
Maximum Quiescent
Supply Current
0.001
0.001
0.6
±0.5
5.5
8.0
* All outputs loaded; thresholds on input associated with output under test.
† Maximum test duration 2.0 ms, one output loaded at a time.
FACT DATA
5-7
V
V
IOUT = –50 µA
*VIN = VIL or VIH
–24 mA
IOH
–24 mA
IOUT = 50 µA
MC74AC350 MC74ACT350
AC CHARACTERISTICS (For Figures and Waveforms — See Section 3)
Symbol
Parameter
VCC*
(V)
74ACT
74ACT
TA = +25°C
CL = 50 pF
TA = –40°C
to +85°C
CL = 50 pF
Min
Typ
Max
Min
Max
Unit
Fig.
No.
tPLH
Propagation Delay
In to On
5.0
4.0
11.5
3.0
13.5
ns
3-6
tPHL
Propagation Delay
In to On
5.0
4.0
11.5
3.0
13.5
ns
3-6
tPLH
Propagation Delay
Sn to On
5.0
4.5
13.0
3.5
15.5
ns
3-6
tPHL
Propagation Delay
Sn to On
5.0
4.5
13.0
3.5
15.5
ns
3-6
tPZH
Output Enable to On
5.0
4.0
9.0
3.0
10.0
ns
3-7
tPZL
Output Enable to On
5.0
4.0
10.0
3.0
11.5
ns
3-8
tPHZ
Output Enable to On
5.0
4.0
10.0
3.0
11.0
ns
3-7
tPLZ
Output Enable to On
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
CIN
Input Capacitance
4.5
pF
VCC = 5.0 V
CPD
Power Dissipation Capacitance
40.0
pF
VCC = 5.0 V
FACT DATA
5-8
MC74AC350 MC74ACT350
OUTLINE DIMENSIONS
N SUFFIX
PLASTIC DIP PACKAGE
CASE 648–08
ISSUE R
–A–
16
9
1
8
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.
B
F
C
DIM
A
B
C
D
F
G
H
J
K
L
M
S
L
S
SEATING
PLANE
–T–
K
H
G
D
M
J
16 PL
0.25 (0.010)
T A
M
M
D SUFFIX
PLASTIC SOIC PACKAGE
CASE 751B–05
ISSUE J
–A–
16
1
P
8 PL
0.25 (0.010)
8
M
B
S
G
R
K
F
X 45 _
C
–T–
SEATING
PLANE
J
M
D
16 PL
0.25 (0.010)
M
T B
S
A
S
MILLIMETERS
MIN
MAX
18.80
19.55
6.35
6.85
3.69
4.44
0.39
0.53
1.02
1.77
2.54 BSC
1.27 BSC
0.21
0.38
2.80
3.30
7.50
7.74
0_
10 _
0.51
1.01
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.
9
–B–
INCHES
MIN
MAX
0.740
0.770
0.250
0.270
0.145
0.175
0.015
0.021
0.040
0.70
0.100 BSC
0.050 BSC
0.008
0.015
0.110
0.130
0.295
0.305
0_
10 _
0.020
0.040
DIM
A
B
C
D
F
G
J
K
M
P
R
MILLIMETERS
MIN
MAX
9.80
10.00
3.80
4.00
1.35
1.75
0.35
0.49
0.40
1.25
1.27 BSC
0.19
0.25
0.10
0.25
0_
7_
5.80
6.20
0.25
0.50
INCHES
MIN
MAX
0.386
0.393
0.150
0.157
0.054
0.068
0.014
0.019
0.016
0.049
0.050 BSC
0.008
0.009
0.004
0.009
0_
7_
0.229
0.244
0.010
0.019
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How to reach us:
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P.O. Box 20912; Phoenix, Arizona 85036. 1–800–441–2447
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◊
FACT DATA
5-9
*MC74AC350/D*
MC74AC350/D
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