CD74AC20E


        SCHS229B – SEPTEMBER 1998 – REVISED NOVEMBER 2002 D AC Types Feature 1.5-V to 5.5-V Operation D D D D D E OR M PACKAGE (TOP VIEW) and Balanced Noise Immunity at 30% of the Supply Speed of Bipolar F, AS, and S, With Significantly Reduced Power Consumption Balanced Propagation Delays ±24-mA Output Drive Current – Fanout to 15 F Devices SCR-Latchup-Resistant CMOS Process and Circuit Design Exceeds 2-kV ESD Protection Per MIL-STD-883, Method 3015 1A 1B NC 1C 1D 1Y GND 1 14 2 13 3 12 4 11 5 10 6 9 7 8 VCC 2D 2C NC 2B 2A 2Y description/ordering information The AC device contains two independent 4-input NAND gates. This device performs the Boolean function Y = A • B • C • D or Y = A + B + C + D in positive logic. ORDERING INFORMATION PDIP – E –55°C 55 C to 125 125°C C ORDERABLE PART NUMBER PACKAGE† TA SOIC – M Tube CD74AC20E Tube CD74AC20M Tape and reel CD74AC20M96 TOP-SIDE MARKING CD74AC20E AC20M † Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package. FUNCTION TABLE (each gate) INPUTS A B C D OUTPUT Y H H H H L L X X X H X L X X H X X L X H X X X L H logic diagram (positive logic) 1A 1B 1C 1D 1 2 4 5 6 1Y 2A 2B 2C 2D 9 10 12 13 8 2Y Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. Copyright  2002, Texas Instruments Incorporated 
     !   " #$ %!& %    "! "! '! !  !(  ! %% )*& %  "!+ %!  !!$* $ %! !+  $$ "!!& POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 1 

        SCHS229B – SEPTEMBER 1998 – REVISED NOVEMBER 2002 absolute maximum ratings over operating free-air temperature range† Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 6 V Input clamp current, IIK (VI < 0 or VI > VCC) (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20 mA Output clamp current, IOK (VO < 0 or VO > VCC) (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±50 mA Continuous output current, IO (VO = 0 to VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±50 mA Continuous current through VCC or GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±100 mA Package thermal impedance, θJA (see Note 2): E package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80°C/W M package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86°C/W Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to 150°C † Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. NOTES: 1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed. 2. The package thermal impedance is calculated in accordance with JESD 51-7. recommended operating conditions (see Note 3) TA = 25°C VCC VIH VIL Supply voltage High-level High level in input ut voltage Low-level Low level in input ut voltage VI VO Input voltage IOH IOL High-level output current ∆t/∆v Input transition rise or fall rate –40°C to 85°C UNIT MIN MAX MIN MAX MIN MAX 1.5 5.5 1.5 5.5 1.5 5.5 VCC = 1.5 V VCC = 3 V 1.2 1.2 1.2 2.1 2.1 2.1 VCC = 5.5 V VCC = 1.5 V 3.85 3.85 3.85 VCC = 3 V VCC = 5.5 V 0 Output voltage Low-level output current –55°C to 125°C 0 V 0.3 0.3 0.3 0.9 0.9 0.9 1.65 1.65 1.65 VCC VCC 0 0 VCC VCC 0 0 V V VCC VCC V V VCC = 4.5 V to 5.5 V VCC = 4.5 V to 5.5 V –24 –24 –24 mA 24 24 24 mA VCC = 1.5 V to 3 V VCC = 3.6 V to 5.5 V 50 50 50 20 20 20 ns/V NOTE 3: All unused inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report, Implications of Slow or Floating CMOS Inputs, literature number SCBA004. 2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 

        SCHS229B – SEPTEMBER 1998 – REVISED NOVEMBER 2002 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS MIN IOH = –50 50 µA VOH VI = VIH or VIL II ICC VI = VIH or VIL VI = VCC or GND VI = VCC or GND, MAX MIN –40°C to 85°C MAX MIN 1.5 V 1.4 1.4 1.4 2.9 3V 2.9 2.9 4.5 V 4.4 4.4 4.4 IOH = –4 mA IOH = –24 mA IOH = –50 mA† 3V 2.58 2.4 2.48 4.5 V 3.94 3.7 3.8 IOH = –75 mA† 5.5 V IOL = 50 µA VOL –55°C to 125°C TA = 25°C VCC 5.5 V UNIT MAX V 3.85 3.85 1.5 V 0.1 0.1 0.1 3V 0.1 0.1 0.1 4.5 V 0.1 0.1 0.1 IOL = 12 mA IOL = 24 mA IOL = 50 mA† 3V 0.36 0.5 0.44 4.5 V 0.36 0.5 0.44 IOL = 75 mA† 5.5 V 5.5 V 1.65 1.65 5.5 V IO = 0 V 5.5 V Ci ±0.1 ±1 ±1 µA 4 80 40 µA 10 10 10 pF † Test one output at a time, not exceeding 1-second duration. Measurement is made by forcing indicated current and measuring voltage to minimize power dissipation. Test verifies a minimum 50-Ω transmission-line drive capability at 85°C and 75-Ω transmission-line drive capability at 125°C. switching characteristics over recommended operating free-air temperature range, VCC = 1.5 V, CL = 50 pF (unless otherwise noted) (see Figure 1) PARAMETER tPLH tPHL FROM (INPUT) TO (OUTPUT) A B A, B, C C, or D Y –55°C to 125°C MIN MAX –40°C to 85°C MIN UNIT MAX 153 139 153 139 ns switching characteristics over recommended operating free-air temperature range, VCC = 3.3 V ± 0.3 V, CL = 50 pF (unless otherwise noted) (see Figure 1) PARAMETER tPLH tPHL FROM (INPUT) TO (OUTPUT) A B A, B, C C, or D Y POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 –55°C to 125°C –40°C to 85°C MIN MAX MIN MAX 4.3 17.1 4.4 15.5 4.3 17.1 4.4 15.5 UNIT ns 3 

        SCHS229B – SEPTEMBER 1998 – REVISED NOVEMBER 2002 switching characteristics over recommended operating free-air temperature range, VCC = 5 V ± 0.5 V, CL = 50 pF (unless otherwise noted) (see Figure 1) PARAMETER tPLH tPHL FROM (INPUT) TO (OUTPUT) A B A, B, C C, or D Y –55°C to 125°C –40°C to 85°C UNIT MIN MAX MIN MAX 3.1 12.2 3.1 11.1 3.1 12.2 3.1 11.1 ns operating characteristics, TA = 25°C PARAMETER Cpd 4 TYP Power dissipation capacitance 48 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 UNIT pF 

        SCHS229B – SEPTEMBER 1998 – REVISED NOVEMBER 2002 PARAMETER MEASUREMENT INFORMATION S1 R1 = 500 Ω† From Output Under Test 2 × VCC Open GND CL = 50 pF (see Note A) R2 = 500 Ω† TEST S1 tPLH/tPHL tPLZ/tPZL tPHZ/tPZH Open 2 × VCC GND tw VCC † When VCC = 1.5 V, R1 = R2 = 1 kΩ Input 50% VCC 50% VCC 0V LOAD CIRCUIT VOLTAGE WAVEFORMS PULSE DURATION CLR Input VCC Reference Input VCC 50% VCC 50% VCC 0V 0V tsu trec Data 50% Input 10% VCC 50% VCC CLK 90% VOLTAGE WAVEFORMS RECOVERY TIME tf VCC 50% VCC 50% VCC tPLH tPHL 50% 10% 90% 90% tr tPHL Out-of-Phase Output VCC 50% VCC 10% 0 V VOLTAGE WAVEFORMS SETUP AND HOLD AND INPUT RISE AND FALL TIMES 0V In-Phase Output 90% tr 0V Input th 90% VOH 50% VCC 10% VOL tf Output Waveform 1 S1 at 2 × VCC (see Note B) tPLH 50% VCC 10% tf 50% 10% 90% tr VOH VOL VOLTAGE WAVEFORMS PROPAGATION DELAY AND OUTPUT TRANSITION TIMES VCC Output Control 50% VCC 50% VCC 0V tPLZ tPZL 50% VCC tPHZ tPZH Output Waveform 2 S1 at GND (see Note B) ≈VCC 20% VCC VOL 50% VCC VOH 80% VCC ≈0 V VOLTAGE WAVEFORMS OUTPUT ENABLE AND DISABLE TIMES NOTES: A. CL includes probe and test-fixture capacitance. B. Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control. Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control. C. All input pulses are supplied by generators having the following characteristics: PRR ≤ 1 MHz, ZO = 50 Ω, tr = 3 ns, tf = 3 ns. Phase relationships between waveforms are arbitrary. D. For clock inputs, fmax is measured with the input duty cycle at 50%. E. The outputs are measured one at a time with one input transition per measurement. F. tPLH and tPHL are the same as tpd. G. tPZL and tPZH are the same as ten. H. tPLZ and tPHZ are the same as tdis. Figure 1. Load Circuit and Voltage Waveforms POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 5 PACKAGE OPTION ADDENDUM www.ti.com 6-Feb-2020 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Pins Package Drawing Qty Eco Plan Lead/Ball Finish MSL Peak Temp (2) (6) (3) Op Temp (°C) Device Marking (4/5) CD74AC20E ACTIVE PDIP N 14 25 Green (RoHS & no Sb/Br) NIPDAU N / A for Pkg Type -55 to 125 CD74AC20E CD74AC20M ACTIVE SOIC D 14 50 Green (RoHS & no Sb/Br) NIPDAU Level-1-260C-UNLIM -55 to 125 AC20M CD74AC20M96 ACTIVE SOIC D 14 2500 Green (RoHS & no Sb/Br) NIPDAU Level-1-260C-UNLIM -55 to 125 AC20M CD74AC20M96E4 ACTIVE SOIC D 14 2500 Green (RoHS & no Sb/Br) NIPDAU Level-1-260C-UNLIM -55 to 125 AC20M CD74AC20M96G4 ACTIVE SOIC D 14 2500 Green (RoHS & no Sb/Br) NIPDAU Level-1-260C-UNLIM -55 to 125 AC20M (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may reference these types of products as "Pb-Free". RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption. Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of