MC74ACT Input Universal Shift/Storage Register with Synchronous Reset and Common I/O Pins

Transcription

1 8 Input Universal Shift/Storage Register with Synchronous Reset and Common I/O Pins The MC74ACT323 is an 8-bit universal shift/storage register with3-state outputs. Its function is similar to the MC74ACT299 with the exception of Synchronous Reset. Parallel load inputs and flip-flop outputs are multiplexed to minimize pin count. Separate serial inputs and outputs are provided for Q 0 and Q 7 to allow easy cascading. Four operation modes are possible: hold (store), shift left, shift right and parallel load. Common Parallel I/O for Reduced Pin Count Additional Serial Inputs and Outputs for Expansion Four Operating Modes: Shift Left, Shift Right, Load and Store 3-State Outputs for us-oriented Applications Outputs Source/Sink 24 ma TTL Compatible Inputs PDIP N SUFFIX CASE 738 SO DW SUFFIX CASE 75D MARKING DIAGRAMS MC74ACT323N AWLYYWW ACT323 AWLYYWW TSSOP DT SUFFIX CASE 948E ACT 323 ALYW A = Assembly Location L, WL = Wafer Lot Y, YY = Year W, WW = Work Week ORDERING INFORMATION Device Package Shipping MC74ACT323N PDIP 8 Units/Rail MC74ACT323DW SOIC 38 Units/Rail MC74ACT323DWR2 SOIC 000 Tape & Reel MC74ACT323DT TSSOP 75 Units/Rail MC74ACT323DTR2 TSSOP 2500 Tape & Reel Semiconductor Components Industries, LLC, 06 June, 06 Rev. 2 Publication Order Number: MC74ACT323/D

2 CC S DS 7 Q 7 I/O 7 I/O 5 I/O 3 I/O DS DS 7 Q 7 I/O S 0 OE OE 2 I/O 6 I/O 4 I/O 2 I/O 0 Q 0 SR Figure. Pinout: Lead Packages Conductors (Top iew) PIN ASSIGNMENT PIN DS 0 DS 7 S 0, S SR OE, OE 2 I/O 0 I/O 7 FUNCTION Clock Pulse Input Serial Data Input for Right Shift Serial Data Input for Left Shift Mode Select Inputs Synchronous Master Reset 3-State Output Enable Inputs Multipled Parallel Data Inputs or 3-State Parallel Data Outputs I/O 6 I/O 5 I/O 4 I/O 3 Q 0, Q 7 Serial Outputs I/O 2 S 0 DS 0 DS 7 S 2 OE SR Q0 I/O 0 I/O I/O 2 I/O 3 I/O 4 I/O 5 I/O 6 I/O 7 Q 7 I/O TRUTH TALE Figure 3. Logic Symbol I/O 0 Inputs SR S S 0 Response L X X Synchronous Reset; Q 0 Q 7 = LOW H H H Parallel Load; I/O n Q n H L H Shift Right; DS 0 Q 0, Q 0 Q, etc. H H L Shift Left; DS 7 Q 7, Q 7 Q 6, etc. H L L X Hold H = HIGH oltage Level L = LOW oltage Level X = Immaterial = LOW-to-HIGH Clock Transition S 0 S DS 0 Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays. SR Figure 2. LOGIC DIAGRAM Q 0 OE OE 2 2

3 FUNCTIONAL DESCRIPTION The MC74ACT323 contains eight edge- triggered D-type flip-flops and the interstage logic necessary to perform synchronous reset, shift left, shift right, parallel load and hold operations. The type of operation is determined by S 0 and S as shown in the Mode Select Table. All flip-flop outputs are brought out through 3 state buffers to separate I/O pins that also serve as data inputs in the parallel load mode. Q 0 and Q 7 are also brought out on other pins for expansion in serial shifting of longer words. A LOW signal on SR overrides the Select inputs and allows the flip-flops to be reset by the next rising edge of. All other state changes are also initiated by the LOW-to-HIGH transition. Inputs can change when the clock is in either state provided only that the recommended setup and hold times, relative to the rising edge of, are observed. A HIGH signal on either OE or OE 2 disables the 3-state buffers and puts the I/O pins in the high impedance state. In this condition the shift, hold, load and reset operations can still occur. The 3-state buffers are also disabled by HIGH signals on both S 0 and S in preparation for a parallel load operation. MAXIMUM RATINGS (Note ) Symbol Parameter alue Unit CC DC Supply oltage 0.5 to 7.0 I DC Input oltage 0.5 I CC 0.5 O DC Output oltage (Note 2) 0.5 O CC 0.5 I IK DC Input Diode Current ma I OK DC Output Diode Current 50 ma I O DC Output Sink/Source Current 50 ma I CC DC Supply Current per Output Pin 50 ma I DC Ground Current per Output Pin 50 ma T STG Storage Temperature Range 65 to 50 C T L Lead temperature, mm from Case for 0 Seconds 260 C T J Junction temperature under ias 50 C JA Thermal resistance PDIP SOIC TSSOP P D Power Dissipation in Still Air at 85 C PDIP SOIC TSSOP MSL Moisture Sensitivity Level F R Flammability Rating Oxygen Index: 30% 35% UL in ESD ESD Withstand oltage Human ody Model (Note 3) Machine Model (Note 4) Charged Device Model (Note 5) > 00 > 0 >000 I Latch Up Latch Up Performance Above CC and elow at 85 C (Note 6) 00 ma. Absolute maximum continuous ratings are those values beyond which damage to the device may occur. Extended exposure to these conditions or conditions beyond those indicated may adversely affect device reliability. Functional operation under absolute maximum rated conditions is not implied. 2. I O absolute maximum rating must be observed. 3. Tested to EIA/JESD22 A4 A. 4. Tested to EIA/JESD22 A5 A. 5. Tested to JESD22 C0 A. 6. Tested to EIA/JESD78. C/W mw 3

4 RECOMMENDED OPERATING CONDITIONS Symbol Parameter Min Typ Max Unit CC DC Input oltage (Referenced to ) 4.5 in, out DC Input oltage, Output oltage (Referenced to ) 0 CC T A Operating Temperature, All Package Types C t r, t f Input Rise and Fall Time (Note 8) CC = 4.5 CC = T J Junction Temperature (PDIP) 40 C I OH Output Current High 24 ma I OL Output Current Low 24 ma 7. Unused Inputs may not be left open. All inputs must be tied to a high voltage level or low logic voltage level. 8. in from 0.8 to 2.0 ; refer to individual Data Sheets for devices that differ from the typical input rise and fall times ns/ DC CHARACTERISTICS T A = +25 C T A = 40 C to +85 C Symbol Parameter CC () Typ Guaranteed Limits Unit Conditions IH Minimum High Level Input oltage OUT = 0. or CC 0. IL Maximum Low Level Input oltage OUT = 0. or CC 0. OH Minimum High Level Output oltage I OUT = 50 μa * IN = IL or IH 24 ma I OH 24 ma OL Maximum Low Level Output oltage I OUT = 50 μa * IN = IL or IH 24 ma I OH 24 ma I IN Maximum Input Leakage Current ±0. ±.0 μa I = CC, I CCT Additional Maximum I CC /Input ma I = CC 2. I OZ Maximum 3 State Current ±0.5 ±5.0 μa I (OE) = IL, IH I = CC, O = CC, I OLD Minimum Dynamic Output Current I OHD ma ma OLD =.65 Max OHD = 3.85 Min I CC Maximum Quiescent Supply Current μa IN = CC or *All outputs loaded; thresholds on input associated with output under test. Maximum test duration 2.0 ms, one output loaded at a time. 4

5 AC CHARACTERISTICS t r = t f = 3.0 ns (For Figures and Waveforms, See Figures 4 and 5.) Symbol Parameter CC * () T A = +25 C C L = 50 pf T A = 40 C to +85 C C L = 50 pf Min Typ Max Min Max Unit f max Maximum Input Frequency MHz t PLH Propagation Delay to Q 0 or Q ns t PHL Propagation Delay to Q 0 or Q ns t PLH Propagation Delay to I/O n ns t PZH Output Enable Time ns t PZL Output Enable Time ns t PHZ Output Disable Time ns t PLZ Output Disable Time ns *oltage Range 5.0 is 5.0 ±0.5 AC OPERATING REQUIREMENTS Symbol Parameter CC * () Typ T A = +25 C C L = 50 pf T A = 40 C to +85 C C L = 50 pf Guaranteed Minimum t s Setup Time, HIGH or LOW S 0 or S to ns t h Hold Time, HIGH or LOW S 0 or S to ns t s Setup Time, HIGH or LOW I/O n, DS 0, DS 7 to ns t h Hold Time, HIGH or LOW I/O n, DS 0, DS 7 to ns t s Setup Time, HIGH or LOW SR to ns t h Hold Time, HIGH or LOW SR to ns t w Pulse Width HIGH or LOW ns *oltage Range 5.0 is 5.0 ±0.5 Unit CAPACITANCE Symbol Parameter alue Typ Unit Test Conditions C IN Input Capacitance 4.5 pf CC = 5.0 C PD Power Dissipation Capacitance 70 pf CC = 5.0 5

6 SWITCHING WAEFORMS C p 90% 0% t w t r t f 3.0 SR t s t h 3.0 Q 0 Q 7 I/O 0 I/O 7 90% 0% t PLH /fmax t TLH t PHL t THL C p Q 0 Q 7 I/O 0 I/O 7 t PHL 3.0 Figure 4. Figure 5. CC OE OR OE2 Q 0 Q 7 t PZL t PLZ 0% t PZH t PHZ 90% Figure HIGH IMPEDANCE OL OH HIGH IMPEDANCE S 0 OR S S OR S 0 Q 0 Q 7 t PZL t PLZ t PZH t PHZ 0% Figure HIGH IMPEDANCE OL OH 90% HIGH IMPEDANCE MODE SELECT OR DATA C p ALID t s t h Figure 8. INPUT DEICE UNDER TEST OUTPUT C L * SCOPE TEST POINT *Includes all probe and jig capacitance Figure 9. Test Circuit 6

7 PACKAGE DIMENSIONS PDIP N SUFFIX PIN PLASTIC DIP PACKAGE CASE ISSUE E T SEATING PLANE G E A F 0 D PL N K C 0.25 (0.00) M T A M L M J PL 0.25 (0.00) M T M NOTES:. DIMENSIONING AND TOLERANCING PER ANSI Y4.5M, CONTROLLING DIMENSION: INCH. 3. DIMENSION L TO CENTER OF LEAD WHEN FORMED PARALLEL. 4. DIMENSION DOES NOT INCLUDE MOLD FLASH. INCHES MILLIMETERS DIM MIN MAX MIN MAX A C D E SC.27 SC F G 0.00 SC 2.54 SC J K L SC 7.62 SC M N SO DW SUFFIX PIN PLASTIC SOIC PACKAGE CASE 75D 05 ISSUE F D A H 0X 0.25 M M 0 E h X 45 NOTES:. DIMENSIONS ARE IN MILLIMETERS. 2. INTERPRET DIMENSIONS AND TOLERANCES PER ASME Y4.5M, DIMENSIONS D AND E DO NOT INCLUDE MOLD PROTRUSION. 4. MAXIMUM MOLD PROTRUSION 0.5 PER SIDE. 5. DIMENSION DOES NOT INCLUDE DAMAR PROTRUSION. ALLOWALE PROTRUSION SHALL E 0.3 TOTAL IN EXCESS OF DIMENSION AT MAXIMUM MATERIAL CONDITION. X 0.25 M T A S 8X e S A A T SEATING PLANE C L MILLIMETERS DIM MIN MAX A A C D E e.27 SC H h L

8 0.5 (0.006) T L 0.5 (0.006) T U 2X L/2 PIN IDENT U C S S 0.00 (0.004) T SEATING PLANE X K REF 0 A D G H MC74ACT323 PACKAGE DIMENSIONS TSSOP DT SUFFIX PIN PLASTIC TSSOP PACKAGE CASE 948E 02 ISSUE A 0.0 (0.004) M T U S S U J J N N K K ÍÍÍÍ ÍÍÍÍ SECTION N N F DETAIL E 0.25 (0.00) DETAIL E M W NOTES:. DIMENSIONING AND TOLERANCING PER ANSI Y4.5M, CONTROLLING DIMENSION: MILLIMETER. 3. DIMENSION A DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE URRS. MOLD FLASH OR GATE URRS SHALL NOT EXCEED 0.5 (0.006) PER SIDE. 4. DIMENSION DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSION. INTERLEAD FLASH OR PROTRUSION SHALL NOT EXCEED 0.25 (0.00) PER SIDE. 5. DIMENSION K DOES NOT INCLUDE DAMAR PROTRUSION. ALLOWALE DAMAR PROTRUSION SHALL E 0.08 (0.003) TOTAL IN EXCESS OF THE K DIMENSION AT MAXIMUM MATERIAL CONDITION. 6. TERMINAL NUMERS ARE SHOWN FOR REFERENCE ONLY. 7. DIMENSION A AND ARE TO E DETERMINED AT DATUM PLANE W. MILLIMETERS INCHES DIM MIN MAX MIN MAX A C D F G 0.65 SC SC H J J K K L 6.40 SC SC M ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. Typical parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including Typicals must be validated for each customer application by customer s technical experts. SCILLC does not convey any license under its patent rights nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should uyer purchase or use SCILLC products for any such unintended or unauthorized application, uyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner. PULICATION ORDERING INFORMATION LITERATURE FULFILLMENT: Literature Distribution Center for ON Semiconductor P.O. ox 563, Denver, Colorado 8027 USA Phone: or Toll Free USA/Canada Fax: or Toll Free USA/Canada orderlit@onsemi.com N. American Technical Support: Toll Free USA/Canada Europe, Middle East and Africa Technical Support: Phone: Japan Customer Focus Center Phone: ON Semiconductor Website: Order Literature: For additional information, please contact your local Sales Representative MC74ACT323/D