4-BIT BIDIRECTIONAL UNIVERSAL SHIFT REGISTER The MC74AC194/74ACT194 is a high-speed 4-bit bidirectional universal shift register. As a high-speed multifunctional, sequential building block, it is useful in a wide variety of applications. It may be used in serial-serial, shift left, shift right, serial-parallel, parallel-serial, and parallel-parallel data register transfers. The ′AC/ACT194 is similar in operation to the ′AS195 universal shift register, with added features of shift left without external connections and hold (do nothing) modes of operation. • • • • Typical Shift Frequency of 150 MHz Asynchronous Master Reset Hold (Do Nothing) Mode Fully Synchronous Serial or Parallel Data Transfers N SUFFIX CASE 648-08 PLASTIC FUNCTIONAL DESCRIPTION The MC74AC/74ACT194 contains four edge-triggered D flip-flops and the necessary interstage logic to synchronously perform shift right, shift left, parallel load and hold operations. Signals applied to the Select (S0, S1) inputs determine the type of operation, as shown in the Mode Select Table. Signals on the Select, Parallel data (P0–P3) and Serial data (DSR, DSL) inputs can change when the clock is in either state, provided only that the recommended setup and hold times, with respect to the clock rising edge, are observed. A LOW signal on Master Reset (MR) overrides all other inputs and forces the outputs LOW. D SUFFIX CASE 751B-05 PLASTIC MODE SELECT TABLE Operating Mode 16 VCC MR 1 Inputs Outputs MR S1 S0 DSR DSL Pn Q0 Q1 Q2 Q3 Reset L X X X X X L L L L Hold H l l X X X q0 q1 q2 q3 Shift Left H H h h l l X X l h X X q1 q1 q2 q2 q3 q3 L H Shift Right H H l l h h l h X X X X L H q0 q0 q1 q1 q2 q2 Parallel Load H h h X X pn p0 p1 p2 p3 l = LOW voltage level one setup time prior to the LOW-to-HIGH clock transition. h = HIGH voltage level one setup time prior to the LOW-to-HIGH clock transition. Pn (qn) = Lower case letters indicate the state of the referenced input (or output) one setup time prior to the LOW-to-HIGH clock transition. H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial DSR 2 15 Q0 P0 3 14 Q1 P1 4 13 Q2 P2 5 12 Q3 P3 6 11 CP 7 10 S1 8 9 S0 DSL GND 2 9 10 11 5-1 5 6 7 DSR P0 P1 P2 P3 DSL S0 S1 CP MR Q0 Q1 Q2 Q3 1 FACT DATA 3 4 15 14 13 12 MC74AC194 MC74ACT194 LOGIC DIAGRAM P0 P2 P1 P3 S1 S0 DSR DSR S R CLEAR CP S Q2 CP S Q3 CP R CLEAR R CLEAR R CLEAR S Q1 Q0 CP CP MR Q0 Q1 Q2 Q3 Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays. MAXIMUM RATINGS* Symbol Parameter Value Unit VCC DC Supply Voltage (Referenced to GND) –0.5 to +7.0 V Vin DC Input Voltage (Referenced to GND) –0.5 to VCC +0.5 V 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. FACT DATA 5-2 MC74AC194 MC74ACT194 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 2) ′ACT Devices except Schmitt Inputs TJ Junction Temperature (PDIP) TA Operating Ambient Temperature Range IOH IOL Typ Max ′AC 2.0 5.0 6.0 ′ACT 4.5 5.0 5.5 0 Input Rise and Fall Time (Note 1) ′AC Devices except Schmitt Inputs tr, tf Min Unit V 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 V ns/V ns/V 140 °C 85 °C Output Current — High –24 mA Output Current — Low 24 mA –40 25 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. DC CHARACTERISTICS Symbol Parameter VCC (V) 74AC 74AC TA = +25°C TA = –40°C to +85°C Typ VIH VIL VOH 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 5.5 ±0.1 Maximum Low Level Output Voltage Maximum Input Leakage Current IOLD †Minimum Dynamic Output Current ICC Guaranteed Limits 3.0 4.5 5.5 IIN IOHD Conditions Minimum High Level Input Voltage 3.0 4.5 5.5 VOL Unit Maximum Quiescent Supply Current 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 ±1.0 µA VI = 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 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 5-3 MC74AC194 MC74ACT194 AC CHARACTERISTICS (For Figures and Waveforms — See Section 3) Symbol VCC* (V) Parameter 74AC 74AC TA = +25°C CL = 50 pF TA = –40°C to +85°C CL = 50 pF Min Min Max Unit Fig. No. MHz 3-3 Max fmax Maximum Input Frequency 3.3 5.0 130 210 115 150 tPLH Propagation Delay CP to Q 3.3 5.0 2.0 2.0 14.5 12.5 1.5 1.5 16.0 14.0 ns 3-6 tPHL Propagation Delay CP to Q 3.3 5.0 2.0 2.0 14.5 12.5 1.5 1.5 16.0 14.0 ns 3-6 tPHL Propagation Delay Reset to Q 3.3 5.0 2.0 2.0 11.0 9.0 1.5 1.5 12.0 10.0 ns 3-6 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. AC OPERATING REQUIREMENTS Symbol VCC* (V) Parameter 74AC 74AC TA = +25°C CL = 50 pF TA = –40°C to +85°C CL = 50 pF Guaranteed Minimum ts Setup Time, Pn to Clock 3.3 5.0 4.0 2.5 5.0 3.5 ns 3-9 th Hold Time, Pn to Clock 3.3 5.0 3.5 2.0 4.0 2.5 ns 3-9 ts Setup Time, Sn to CP 3.3 5.0 5.5 4.0 6.5 5.0 ns 3-9 th Hold Time, Sn to CP 3.3 5.0 3.5 2.0 4.0 2.5 ns 3-9 ts Setup Time, DSR or DSL to Clock 3.3 5.0 5.5 4.0 6.0 4.5 ns 3-9 th Hold Time, DSR or DSL to Clock 3.3 5.0 1.5 2.0 2.0 2.5 ns 3-9 tw CP Pulse Width 3.3 5.0 5.5 4.0 6.0 4.5 ns 3-6 tw MR Pulse Width 3.3 5.0 5.5 4.0 6.0 4.5 ns 3-9 trec Recovery TIme MR to CP 3.3 5.0 1.5 1.0 1.5 1.0 ns 3-9 * 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 5-4 MC74AC194 MC74ACT194 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 4.5 5.5 VOL 4.5 5.5 Maximum Low Level Output Voltage 0.001 0.001 IOUT = –50 µA *VIN = VIL or VIH –24 mA IOH –24 mA V IOUT = 50 µA V IIN Maximum Input Leakage Current 5.5 ∆ICCT Additional Max. ICC/Input 5.5 IOLD †Minimum Dynamic Output Current 5.5 75 mA VOLD = 1.65 V Max 5.5 –75 mA VOHD = 3.85 V Min 80 µA VIN = VCC or GND IOHD ICC Maximum Quiescent Supply Current 0.6 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. AC CHARACTERISTICS (For Figures and Waveforms — See Section 3) Symbol Parameter VCC* (V) Min 74ACT 74ACT TA = +25°C CL = 50 pF TA = –40°C to +85°C CL = 50 pF Typ Max Min Unit Fig. No. MHz 3-3 Max fmax Maximum Input Frequency 5.0 210 tPLH Propagation Delay CP to Q 5.0 2.0 13.0 1.5 13.5 ns 3-6 tPHL Propagation Delay CP to Q 5.0 2.0 12.5 1.5 14.0 ns 3-6 tPHL Propagation Delay MR to Q 5.0 2.0 12.5 1.5 14.0 ns 3-6 * Voltage Range 5.0 V is 5.0 V ±0.5 V. FACT DATA 5-5 150 MC74AC194 MC74ACT194 AC OPERATING REQUIREMENTS Symbol VCC* (V) Parameter 74ACT 74ACT TA = +25°C CL = 50 pF TA = –40°C to +85°C CL = 50 pF Unit Fig. No. Guaranteed Minimum ts Setup Time, Pn to CP 5.0 2.5 3.5 ns 3-9 th Hold Time, Pn to CP 5.0 1.5 2.0 ns 3-9 ts Setup Time, Sn to CP 5.0 3.5 4.5 ns 3-9 th Hold Time, Sn to CP 5.0 1.5 2.0 ns 3-9 ts Setup Time, DSR or DSL to Clock 5.0 5.0 5.5 ns 3-9 th Hold Time, DSR or DSL to Clock 5.0 1.5 2.0 ns 3-9 tw CP Pulse Width 5.0 4.0 4.5 ns 3-9 tw MR Pulse Width, LOW 5.0 4.0 4.5 ns 3-9 trec Recovery Time MR to CP 5.0 1.0 1.5 ns 3-9 Value Typ Unit Test Conditions 4.5 pF VCC = 5.0 V 125.0 pF VCC = 5.0 V * Voltage Range 5.0 V is 5.0 V ±0.5 V. CAPACITANCE Symbol Parameter CIN Input Capacitance CPD Power Dissipation Capacitance FACT DATA 5-6 MC74AC194 MC74ACT194 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 5-7 *MC74AC194/D* MC74AC194/D