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 Motorola reserves the right to make changes without further notice to any products herein. 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Box 20912; Phoenix, Arizona 85036. 1–800–441–2447 JAPAN: Nippon Motorola Ltd.; Tatsumi–SPD–JLDC, Toshikatsu Otsuki, 6F Seibu–Butsuryu–Center, 3–14–2 Tatsumi Koto–Ku, Tokyo 135, Japan. 03–3521–8315 MFAX: [email protected] –TOUCHTONE (602) 244–6609 INTERNET: http://Design–NET.com HONG KONG: Motorola Semiconductors H.K. Ltd.; 8B Tai Ping Industrial Park, 51 Ting Kok Road, Tai Po, N.T., Hong Kong. 852–26629298 ◊ FACT DATA 5-9 *MC74AC350/D* MC74AC350/D