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| MC74AC259 MC74ACT259 8 Bit Addressable Latch The MC74AC259/74ACT259 is a high-speed 8-bit addressable latch designed for general purpose storage applications in digital systems. It is a multifunctional device capable of storing single line data in eight addressable latches, and also a 1-of-8 decoder and demultiplexer with active HIGH outputs. The device also incorporates an active LOW Common Clear for resetting all latches, as well as an active LOW Enable. It is functionally identical to the ALS259 8-bit addressable latch. * * * * * * Serial-to-Parallel Conversion Eight Bits of Storage with Output of Each Bit Available Random (Addressable) Data Entry Active High Demultiplexing or Decoding Capability Easily Expandable Common Clear 8-BIT ADDRESSABLE LATCH FUNCTIONAL DESCRIPTION The MC74AC259/74ACT259 has four modes of operation as shown in the Mode Selection Table. In the addressable latch mode, data on the Data line (D) is written into the addressed latch. The addressed latch will follow the data input with all nonaddressed latches remaining in their previous states in the memory mode. All latches remain in their previous state and are unaffected by the Data or Address inputs. In the one-of-eight decoding or demultiplexing mode, the addressed output will follow the state of the D input with all other outputs in the LOW state. In the clear mode all outputs are LOW and unaffected by the address and data inputs. When operating the MC74AC/ACT259 as an addressable latch, changing more than one bit of the address could impose a transient wrong address. Therefore, this should only be done while in the memory mode. The Mode Select Function Table summarizes the operations of the MC74AC/ACT259. VCC 16 MR 15 E 14 D 13 Q7 12 Q6 11 Q5 10 Q4 9 A0 A1 N SUFFIX CASE 648-08 PLASTIC D SUFFIX CASE 751B-05 PLASTIC LOGIC SYMBOL E D A2 MR Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7 1 A0 2 A1 3 A2 4 Q0 5 Q1 6 Q2 7 Q3 8 GND FACT DATA 5-1 MC74AC259 MC74ACT259 MODE SELECT TABLE E L H L H MR H H L L Mode Addressable Latch Memory Active HIGH 8-Channel Demultiplexer Clear H = HIGH Voltage Level L = LOW Voltage Level MODE SELECT-FUNCTION TABLE Operating Mode Master Reset Inputs MR L L L L * * * L H H H H * * * H E H L L L * * * L H L L L * * * L D X d d d * * * d X d d d * * * d A0 X L H L * * * H X L H L * * * H A1 X L L H * * * H X L L H * * * H A2 X L L L * * * H X L L L * * * H Q0 L Q=d L L * * * L q0 Q=d q0 q0 * * * q0 Q1 L L Q=d L * * * L q1 q1 Q=d q1 * * * q1 Q2 L L L Q=d * * * L q2 q2 q2 Q=d * * * q2 Outputs Q3 L L L L * * * L q3 q3 q3 q3 * * * q3 Q4 L L L L * * * L q4 q4 q4 q4 * * * q4 Q5 L L L L * * * L q5 q5 q5 q5 * * * q5 Q6 L L L L * * * L q6 q6 q6 q6 * * * q6 Q7 L L L L * * * Q=d q7 q7 q7 q7 * * * Q=d Demultiplex (Active HIGH Decoder when D = H) Store (Do Nothing) Addressable Latch H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial d = HIGH or LOW Data one setup time prior to the LOW-to-HIGH Enable transition q = Lower case letters indicate the state of the referenced output established during the last cycle in which it was addressed or cleared. FACT DATA 5-2 MC74AC259 MC74ACT259 Q7 Q6 Q5 MR Q4 A2 A1 Q3 A0 Q2 Q1 D E Q0 Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays. FACT DATA 5-3 MC74AC259 MC74ACT259 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 MC74AC259 MC74ACT259 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 IOLD IOHD ICC Maximum Input Leakage Current Minimum Dynamic Output Current Maximum Quiescent Supply Current 5.5 5.5 5.5 5.5 8.0 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 75 -75 80 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 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 mA mA A * 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 MC74AC259 MC74ACT259 AC CHARACTERISTICS (For Figures and Waveforms -- See Section 3) 74AC Symbol Parameter VCC* (V) Min tPLH tPHL tPLH tPHL tPLH tPHL tPHL Propagation Delay Dn to Qn Propagation Delay Dn to Qn Propagation Delay E to Qn Propagation Delay E to Qn Propagation Delay Address to Qn Propagation Delay Address to Qn Propagation Delay MR to Q 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 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 TA = +25C CL = 50 pF Typ 9.0 6.5 9.0 6.0 10.5 7.0 8.0 7.5 12.0 8.0 10.0 7.0 8.0 6.0 Max 14.5 10.0 13.5 9.5 15.0 10.5 12.5 9.0 19.0 13.0 16.0 11.0 12.0 9.0 74AC TA = -40C to +85C CL = 50 pF Min 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 Max 17.0 11.5 16.0 11.0 17.5 12.5 15.0 11.0 22.5 15.5 19.0 13.0 13.5 10.0 ns ns ns ns ns ns ns 3-5 3-5 3-6 3-6 3-6 3-6 3-7 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 74AC Symbol Parameter VCC* (V) Typ ts th ts th tw tw Setup Time, HIGH or LOW Dn to E Hold Time, HIGH or LOW Dn to E Setup Time Address to E Hold Time Address to E Minimum Pulse Width MR Minimum Pulse Width E 3.3 5.0 3.3 5.0 3.3 5.0 3.3 5.0 3.3 5.0 3.3 5.0 TA = +25C CL = 50 pF 74AC TA = -40C to +85C CL = 50 pF Unit Fig. No. Guaranteed Minimum 3.5 2.5 2.5 2.0 7.0 4.0 2.0 2.0 6.0 5.5 6.5 5.5 4.5 3.5 2.5 2.0 9.0 6.0 2.0 2.0 6.5 6.0 7.0 6.0 ns ns ns ns ns ns 3-9 3-9 3-6 3-6 3-6 3-6 * 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 MC74AC259 MC74ACT259 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 IOLD IOHD ICC Maximum Input Leakage Current Additional Max. ICC/Input Minimum Dynamic Output Current Maximum Quiescent Supply Current 5.5 5.5 5.5 5.5 5.5 8.0 0.6 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 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 VOLD = 1.65 V Max VOHD = 3.85 V Min VIN = VCC or GND V V V A mA mA mA A * 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 MC74AC259 MC74ACT259 AC CHARACTERISTICS (For Figures and Waveforms -- See Section 3) 74ACT Symbol Parameter VCC* (V) Min tPLH tPHL tPLH tPHL tPLH tPHL tPHL Propagation Delay Dn to Qn Propagation Delay Dn or Qn Propagation Delay E to Qn Propagation Delay E or Qn Propagation Delay Address to Qn Propagation Delay Address to Qn Propagation Delay MR to Q 5.0 5.0 5.0 5.0 5.0 5.0 5.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 TA = +25C CL = 50 pF Typ 6.5 7.0 10.5 9.0 8.0 6.0 Max 11.0 10.5 14.0 12.0 11.5 10.0 10.0 74ACT TA = -40C to +85C CL = 50 pF Min 1.5 1.5 1.5 1.5 1.5 1.5 1.5 Max 12.5 12.0 16.5 14.0 13.5 12.0 11.0 ns ns ns ns ns ns ns 3-5 3-5 3-6 3-6 3-6 3-6 3-7 Unit Fig. No. * Voltage Range 5.0 V is 5.0 V 0.5 V. AC OPERATING REQUIREMENTS 74ACT Symbol Parameter VCC* (V) Typ ts th ts th tw tw Setup Time, HIGH or LOW Dn to E Hold Time, HIGH or LOW Dn to E Setup Time Address to E Hold Time Address to E Minimum Pulse Width MR Minimum Pulse Width E 5.0 5.0 5.0 5.0 5.0 5.0 TA = +25C CL = 50 pF 74ACT TA = -40C to +85C CL = 50 pF Unit Fig. No. Guaranteed Minimum 3.0 2.5 4.5 2.5 7.0 7.0 4.0 2.5 6.5 2.5 7.5 7.5 ns ns ns ns ns ns 3-9 3-9 3-6 3-6 3-6 3-6 * 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 50.0 Unit pF pF Test Conditions VCC = 5.0 V VCC = 5.0 V FACT DATA 5-8 MC74AC259 MC74ACT259 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 Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Motorola 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 consequential or incidental damages. "Typical" parameters can and do vary in different applications. All operating parameters, including "Typicals" must be validated for each customer application by customer's technical experts. Motorola does not convey any license under its patent rights nor the rights of others. Motorola 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 Motorola product could create a situation where personal injury or death may occur. Should Buyer purchase or use Motorola products for any such unintended or unauthorized application, Buyer shall indemnify and hold Motorola 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 Motorola was negligent regarding the design or manufacture of the part. Motorola and are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal Opportunity/Affirmative Action Employer. How to reach us: USA/EUROPE: Motorola Literature Distribution; P.O. Box 20912; Phoenix, Arizona 85036. 1-800-441-2447 MFAX: RMFAX0@email.sps.mot.com -TOUCHTONE (602) 244-6609 INTERNET: http://Design-NET.com 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 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 *MC74AC259/D* MC74AC259/D |
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