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MC74AC350 MC74ACT350 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 S1 9 N SUFFIX CASE 648-08 PLASTIC
4-BIT SHIFTER WITH 3-STATE OUTPUTS
D SUFFIX CASE 751B-05 PLASTIC 1 I-3 2 I-2 3 I-1 4 I0 5 I1 6 I2 7 I3 8 GND
TRUTH TABLE
Inputs OE H L L L L S1 X L L H H S0 X L H L H O0 Z I0 I-1 I-2 I-3 Outputs O1 Z I1 I0 I-1 I-2 O2 Z I2 I1 I0 I-1 O3 Z I3 I2 I1 I0 10 9 13 1
LOGIC SYMBOL
2 3 4 5 6 7
S0 I-3 I-2 I-1 I0 S1 OE
I1 I2 I3
O0 O1 O2 O3
H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial
15 14 12 11
FACT DATA 5-1
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 I-1 I0 I1 I2 I3 S1 S0 OE
O0
O1
O2
O3
FACT DATA 5-2
MC74AC350 MC74ACT350
APPLICATIONS 16-Bit Shift-Up 0 to 3 Places, Zero Backfill
0123 4567 8 9 10 11 12 13 14 15
GND
I-3 I-2 I-1 I0 I1 I2 I3 S0 S1 OE Y0 Y1 Y2 Y3 I-3 I-2 I-1 I0 I1 I2 I3 S0 S1 OE Y0 Y1 Y2 Y3 I-3 I-2 I-1 I0 I1 I2 I3 S0 S1 OE Y0 Y1 Y2 Y3 I-3 I-2 I-1 I0 I1 I2 I3 S0 S1 OE Y0 Y1 Y2 Y0
S0 S1 OE 0 1 2 3 4 5 S1 L L H H 6 S0 L H L H NO SHIFT SHIFT 1 PLACE SHIFT 2 PLACES SHIFT 3 PLACES 7 8 9 10 11 12 13 14 15
8-Bit End Around Shift 0 to 7 Places
0123 4567
I-3 I-2 I-1 I0 I1 I2 I3 S0 S1 OE Y0 Y1 Y2 Y3
I-3 I-2 I-1 I0 I1 I2 I3 S0 S1 OE Y0 Y1 Y2 Y3
I-3 I-2 I-1 I0 I1 I2 I3 S0 S1 OE Y0 Y1 Y2 Y3
I-3 I-2 I-1 I0 I1 I2 I3 S0 S1 OE Y0 Y1 Y2 Y3
S0 S1 S2 S2
0
1
2
3
4
5
6
7
S2 L L L L H
S1 L L H H L
S0 L H L H L NO SHIFT SHIFT END AROUND 1 SHIFT END AROUND 2 SHIFT END AROUND 3 SHIFT END AROUND 4
S2 H H H
S1 L H H
S0 H L H SHIFT END AROUND 5 SHIFT END AROUND 6 SHIFT END AROUND 7
FACT DATA 5-3
MC74AC350 MC74ACT350
13-Bit Twos Complement Scaler
12 11 10 9 8765 4321 S
I-3 I-2 I-1 I0 I1 I2 I3 S0 S1 OE Y0 Y1 Y2 Y3
I-3 I-2 I-1 I0 I1 I2 I3 S0 S1 OE Y0 Y1 Y2 Y3
I-3 I-2 I-1 I0 I1 I2 I3 S0 S1 OE Y0 Y1 Y2 Y3
S0 S1 12 11 10 9 S1 S0 L L H H L/8 H/4 L/2 H NO CHANGE 8 7 6 5 SCALE 1/8 1/4 1/2 1 4 3 2 1 S
MAXIMUM RATINGS*
Symbol VCC Vin Vout Iin Iout ICC Tstg Parameter DC Supply Voltage (Referenced to GND) DC Input Voltage (Referenced to GND) DC Output Voltage (Referenced to GND) DC Input Current, per Pin DC Output Sink/Source Current, per Pin DC VCC or GND Current per Output Pin Storage Temperature Value -0.5 to +7.0 -0.5 to VCC +0.5 -0.5 to VCC +0.5 20 50 50 -65 to +150 Unit V V V mA mA mA 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 VCC Vin, Vout Supply Voltage DC Input Voltage, Output Voltage (Ref. to GND) VCC @ 3.0 V tr, tf Input Rise and Fall Time (Note 1) AC Devices except Schmitt Inputs VCC @ 4.5 V VCC @ 5.5 V tr, tf TJ TA IOH IOL Input Rise and Fall Time (Note 2) ACT Devices except Schmitt Inputs Junction Temperature (PDIP) Operating Ambient Temperature Range Output Current -- High Output Current -- Low -40 25 VCC @ 4.5 V VCC @ 5.5 V Parameter AC ACT Min 2.0 4.5 0 150 40 25 10 ns/V 8.0 140 85 -24 24 C C mA mA ns/V Typ 5.0 5.0 Max 6.0 5.5 VCC V Unit V
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
MC74AC350 MC74ACT350
DC CHARACTERISTICS
74AC Symbol Parameter VCC (V) TA = +25C Typ VIH Minimum High Level Input Voltage 3.0 4.5 5.5 3.0 4.5 5.5 3.0 4.5 5.5 3.0 4.5 5.5 VOL Maximum Low Level Output Voltage 3.0 4.5 5.5 3.0 4.5 5.5 IIN IOZ Maximum Input Leakage Current Maximum 3-State Current Minimum Dynamic Output Current Maximum Quiescent Supply Current 5.5 0.002 0.001 0.001 1.5 2.25 2.75 1.5 2.25 2.75 2.99 4.49 5.49 74AC TA = -40C to +85C Unit Conditions
Guaranteed Limits 2.1 3.15 3.85 0.9 1.35 1.65 2.9 4.4 5.4 2.56 3.86 4.86 0.1 0.1 0.1 0.36 0.36 0.36 0.1 2.1 3.15 3.85 0.9 1.35 1.65 2.9 4.4 5.4 2.46 3.76 4.76 0.1 0.1 0.1 0.44 0.44 0.44 1.0 V VOUT = 0.1 V or VCC - 0.1 V VOUT = 0.1 V or VCC - 0.1 V IOUT = -50 A V *VIN = VIL or VIH -12 mA IOH -24 mA -24 mA IOUT = 50 A V *VIN = VIL or VIH 12 mA IOL 24 mA 24 mA VI = VCC, GND VI (OE) = VIL, VIH VI = VCC, GND VO = VCC, GND VOLD = 1.65 V Max VOHD = 3.85 V Min VIN = VCC or GND
VIL
Maximum Low Level Input Voltage
V
VOH
Minimum High Level Output Voltage
V
V
A
5.5 5.5 5.5 5.5
0.5
5.0 75 -75
A mA mA A
IOLD IOHD ICC
8.0
80
* 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)
74AC Symbol Parameter VCC* (V) Min tPLH tPHL tPLH tPHL tPZH tPZL tPHZ tPLZ Propagation Delay In to On Propagation Delay In to On Propagation Delay Sn to On Propagation Delay Sn to On Output Enable to On Output Enable to On Output Enable to On Output Enable to On 3.3 5.0 3.3 5.0 3.3 5.0 3.3 5.0 3.3 5.0 3.3 5.0 3.3 5.0 3.3 5.0 4.0 3.0 4.0 3.0 5.0 3.5 5.0 3.5 3.5 2.5 3.5 2.5 5.0 4.5 3.0 2.5 TA = +25C CL = 50 pF Typ Max 12.5 8.5 12.5 8.5 15.5 11.0 15.5 11.0 8.5 6.0 11.0 7.5 9.5 8.0 6.5 6.0 74AC TA = -40C to +85C CL = 50 pF Min 3.0 2.5 3.0 2.5 4.0 2.5 4.5 3.0 3.0 2.0 2.5 2.0 4.5 4.0 2.5 2.0 Max 13.5 9.5 13.5 9.5 17.5 12.0 17.5 12.0 9.0 6.5 12.0 8.0 10.0 8.5 7.0 6.5 ns ns ns ns ns ns ns ns 3-5 3-5 3-6 3-6 3-7 3-8 3-7 3-8 Unit Fig. No.
* 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
74ACT Symbol Parameter VCC (V) TA = +25C Typ VIH VIL VOH Minimum High Level Input Voltage Maximum Low Level Input Voltage Minimum High Level Output Voltage 4.5 5.5 4.5 5.5 4.5 5.5 4.5 5.5 VOL Maximum Low Level Output Voltage 4.5 5.5 4.5 5.5 IIN ICCT IOZ Maximum Input Leakage Current Additional Max. ICC/Input Maximum 3-State Current Minimum Dynamic Output Current Maximum Quiescent Supply Current 5.5 5.5 5.5 5.5 5.5 5.5 8.0 0.6 0.5 0.001 0.001 1.5 1.5 1.5 1.5 4.49 5.49 74ACT TA = -40C to +85C Unit Conditions
Guaranteed Limits 2.0 2.0 0.8 0.8 4.4 5.4 3.86 4.86 0.1 0.1 0.36 0.36 0.1 2.0 2.0 0.8 0.8 4.4 5.4 3.76 4.76 0.1 0.1 0.44 0.44 1.0 1.5 5.0 75 -75 80 V V V VOUT = 0.1 V or VCC - 0.1 V VOUT = 0.1 V or VCC - 0.1 V IOUT = -50 A *VIN = VIL or VIH -24 mA IOH -24 mA IOUT = 50 A *VIN = VIL or VIH 24 mA IOL 24 mA VI = VCC, GND VI = VCC - 2.1 V VI (OE) = VIL, VIH VI = VCC, GND VO = VCC, GND VOLD = 1.65 V Max VOHD = 3.85 V Min VIN = VCC or GND
V
V
V
A mA A mA mA A
IOLD IOHD ICC
* 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
MC74AC350 MC74ACT350
AC CHARACTERISTICS (For Figures and Waveforms -- See Section 3)
74ACT Symbol Parameter VCC* (V) Min tPLH tPHL tPLH tPHL tPZH tPZL tPHZ tPLZ Propagation Delay In to On Propagation Delay In to On Propagation Delay Sn to On Propagation Delay Sn to On Output Enable to On Output Enable to On Output Enable to On Output Enable to On 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 4.0 4.0 4.5 4.5 4.0 4.0 4.0 4.0 TA = +25C CL = 50 pF Typ Max 11.5 11.5 13.0 13.0 9.0 10.0 10.0 8.0 74ACT TA = -40C to +85C CL = 50 pF Min 3.0 3.0 3.5 3.5 3.0 3.0 3.0 3.0 Max 13.5 13.5 15.5 15.5 10.0 11.5 11.0 9.0 ns ns ns ns ns ns ns ns 3-6 3-6 3-6 3-6 3-7 3-8 3-7 3-8 Unit Fig. No.
* Voltage Range 5.0 V is 5.0 V 0.5 V.
CAPACITANCE
Symbol CIN CPD Input Capacitance Power Dissipation Capacitance Parameter Value Typ 4.5 40.0 Unit pF pF Test Conditions VCC = 5.0 V VCC = 5.0 V
FACT DATA 5-8
MC74AC350 MC74ACT350
OUTLINE DIMENSIONS
N SUFFIX PLASTIC DIP PACKAGE CASE 648-08 ISSUE R
9
-A-
16
B
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. DIM A B C D F G H J K L M S 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 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
F S
C
L
-T- H G D
16 PL
SEATING PLANE
K
J TA
M
M
0.25 (0.010)
M
-A-
D SUFFIX PLASTIC SOIC PACKAGE CASE 751B-05 ISSUE J
9
16
-B-
1 8
P
8 PL
0.25 (0.010)
M
B
S
G F
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. 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
K C -T-
SEATING PLANE
R
X 45 _
M D
16 PL M
J
0.25 (0.010)
TB
S
A
S
DIM A B C D F G J K M P R
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FACT DATA 5-9
*MC74AC350/D*
MC74AC350/D

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