SN54AC244, SN74AC244 OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS SCAS514E − JUNE 1995 − REVISED OCTOBER 2003 D 2-V to 6-V VCC Operation D Inputs Accept Voltages to 6 V D Max tpd of 7.5 ns at 5 V SN54AC244 . . . J OR W PACKAGE SN74AC244 . . . DB, DW, N, NS, OR PW PACKAGE (TOP VIEW) 1OE 1A1 2Y4 1A2 2Y3 1A3 2Y2 1A4 2Y1 GND description/ordering information These octal buffers and line drivers are designed specifically to improve the performance and density of 3-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters. The ’AC244 devices are organized as two 4-bit buffers/drivers with separate output-enable (OE) inputs. When OE is low, the device passes noninverted data from the A inputs to the Y outputs. When OE is high, the outputs are in the high-impedance state. 1 20 2 19 3 18 4 17 5 16 6 15 7 14 8 13 9 12 10 11 VCC 2OE 1Y1 2A4 1Y2 2A3 1Y3 2A2 1Y4 2A1 To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver. 4 3 2 1 20 19 18 5 17 6 16 7 15 8 14 9 10 11 12 13 1Y1 2A4 1Y2 2A3 1Y3 2Y1 GND 2A1 1Y4 2A2 1A2 2Y3 1A3 2Y2 1A4 2OE 2Y4 1A1 1OE VCC SN54AC244 . . . FK PACKAGE (TOP VIEW) ORDERING INFORMATION PDIP − N SN74AC244N Tube SN74AC244DW Tape and reel SN74AC244DWR SOP − NS Tape and reel SN74AC244NSR AC244 SSOP − DB Tape and reel SN74AC244DBR AC244 Tube SN74AC244PW Tape and reel SN74AC244PWR CDIP − J Tube SNJ54AC244J SNJ54AC244J CFP − W Tube SNJ54AC244W SNJ54AC244W LCCC − FK Tube SNJ54AC244FK SNJ54AC244FK TSSOP − PW −55°C 125°C 55 C to 125 C † TOP-SIDE MARKING Tube SOIC − DW −40°C 40 C to 85°C 85 C ORDERABLE PART NUMBER PACKAGE† TA SN74AC244N AC244 AC244 Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package. 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 © 2003, Texas Instruments Incorporated PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. On products compliant to MIL-PRF-38535, all parameters are tested unless otherwise noted. On all other products, production processing does not necessarily include testing of all parameters. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 1 SN54AC244, SN74AC244 OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS SCAS514E − JUNE 1995 − REVISED OCTOBER 2003 FUNCTION TABLE (each buffer) INPUTS OE A OUTPUT Y L H H L L L H X Z logic diagram (positive logic) 1OE 1A1 1A2 1A3 1A4 1 2OE 2 18 4 16 6 14 8 12 1Y1 2A1 1Y2 2A2 1Y3 2A3 1Y4 2A4 19 11 9 13 7 15 5 17 3 2Y1 2Y2 2Y3 2Y4 absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to 7 V Input voltage range, VI (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to VCC + 0.5 V Output voltage range, VO (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to VCC + 0.5 V Input clamp current, IIK (VI < 0 or VI > VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20 mA Output clamp current, IOK (VO < 0 or VO > VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20 mA Continuous output current, IO (VO = 0 to VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±50 mA Continuous current through VCC or GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±200 mA Package thermal impedance, θJA (see Note 2): DB package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70°C/W DW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58°C/W N package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69°C/W NS package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60°C/W PW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83°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. 2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 SN54AC244, SN74AC244 OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS SCAS514E − JUNE 1995 − REVISED OCTOBER 2003 recommended operating conditions (see Note 3) SN54AC244 VCC Supply voltage VCC = 3 V VIH High-level High level input voltage MIN MAX 2 6 Low-level Low level input voltage VI Input voltage VO Output voltage IOL High-level High level output current Low-level Low level output current Δt/Δv Input transition rise or fall rate TA Operating free-air temperature MAX 2 6 2.1 VCC = 4.5 V 3.15 3.15 VCC = 5.5 V 3.85 3.85 UNIT V V 0.9 0.9 VCC = 4.5 V 1.35 1.35 VCC = 5.5 V 1.65 1.65 V 0 VCC 0 VCC V 0 VCC 0 VCC V VCC = 3 V IOH MIN 2.1 VCC = 3 V VIL SN74AC244 −12 −12 VCC = 4.5 V −24 −24 VCC = 5.5 V −24 −24 VCC = 3 V 12 12 VCC = 4.5 V 24 24 VCC = 5.5 V 24 24 8 8 ns/V 85 °C −55 125 −40 mA mA 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. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 3 SN54AC244, SN74AC244 OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS SCAS514E − JUNE 1995 − REVISED OCTOBER 2003 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS IOH = −50 50 μA IOH = −12 mA VOH IOH = −24 24 mA A † MAX SN74AC244 MIN 3V 2.9 2.9 2.9 4.5 V 4.4 4.4 4.4 5.5 V 5.4 5.4 5.4 3V 2.56 2.4 2.46 4.5 V 3.86 3.7 3.76 5.5 V 4.86 4.7 4.76 MAX V 3V 0.1 0.1 0.1 IOL = 50 μA 4.5 V 0.1 0.1 0.1 5.5 V 0.1 0.1 0.1 3V 0.36 0.5 0.44 0.36 0.5 0.44 5.5 V 0.36 0.5 0.44 5.5 V IOL = 75 mA† 5.5 V VI = VCC or GND VO = VCC or GND, VI(OE) = VIL or VIH ICC VI = VCC or GND, Ci VI = VCC or GND IO = 0 V 1.65 1.65 ± 0.1 ±1 ±1 ± 0.1 ±1 ±1 5.5 V ± 0.25 ±5 ± 2.5 μA 5.5 V 4 80 40 μA 55V 5.5 VI = VCC or GND IOZ 3.85 4.5 V mA† UNIT 3.85 5V 2.5 A μA pF Not more than one output should be tested at a time, and the duration of the test should not exceed 10 ms. switching characteristics over recommended operating VCC = 3.3 V ± 0.3 V (unless otherwise noted) (see Figure 1) PARAMETER tPLH tPHL tPZH tPZL tPHZ tPLZ 4 MIN 5.5 V IOL = 50 Control inputs SN54AC244 MAX 5.5 V IOL = 24 mA II TYP IOH = −75 mA† IOL = 12 mA Data inputs MIN mA† IOH = −50 VOL TA = 25°C VCC FROM (INPUT) TO (OUTPUT) A Y OE Y OE Y POST OFFICE BOX 655303 free-air TA = 25°C temperature SN54AC244 SN74AC244 MIN TYP MAX MIN MAX MIN MAX 2 6.5 9 1 12.5 1.5 10 2 6.5 9 1 12 2 10 2 6 10.5 1 11.5 1.5 11 2.5 7.5 10 1 13 2 11 3 7 10 1 12.5 1.5 10.5 2.5 7.5 10.5 1 13 2.5 11.5 • DALLAS, TEXAS 75265 range, UNIT ns ns ns SN54AC244, SN74AC244 OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS SCAS514E − JUNE 1995 − REVISED OCTOBER 2003 switching characteristics over recommended operating VCC = 5 V ± 0.5 V (unless otherwise noted) (see Figure 1) PARAMETER tPLH tPHL tPZH tPZL tPHZ tPLZ FROM (INPUT) TO (OUTPUT) A Y OE Y OE Y free-air TA = 25°C temperature SN54AC244 range, SN74AC244 MIN TYP MAX MIN MAX MIN MAX 1.5 5 7 1 9.5 1 7.5 1.5 5 7 1 9 1 7.5 1.5 5 7 1 9 1.5 8 1.5 5.5 8 1 10.5 1.5 8.5 2.5 6.5 9 1 10.5 1 9.5 2 6.5 9 1 11 2 9.5 UNIT ns ns ns operating characteristics, VCC = 5 V, TA = 25°C PARAMETER Cpd TEST CONDITIONS Power dissipation capacitance per buffer/driver CL = 50 pF, TYP f = 1 MHz 45 UNIT pF PARAMETER MEASUREMENT INFORMATION 2 × VCC S1 500 Ω From Output Under Test CL = 50 pF (see Note A) Open 500 Ω Output Control (low-level enabling) LOAD CIRCUIT Input VCC 50% VCC 50% VCC 0V tPLH tPHL 50% VCC S1 Open 2 × VCC Open VCC 50% VCC 50% VCC VOL 50% VCC 0V tPZL tPLZ Output Waveform 1 S1 at 2 × VCC (see Note B) ≈VCC 50% VCC tPZH VOH Output TEST tPLH/tPHL tPLZ/tPZL tPHZ/tPZH VOL tPHZ Output Waveform 2 S1 at Open (see Note B) VOLTAGE WAVEFORMS VOL + 0.3 V 50% VCC VOH − 0.3 V VOH ≈0 V VOLTAGE WAVEFORMS NOTES: A. CL includes probe and jig 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 ≤ 2.5 ns, tf ≤ 2.5 ns. D. The outputs are measured one at a time with one input transition per measurement. Figure 1. Load Circuit and Voltage Waveforms POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 5 PACKAGE OPTION ADDENDUM www.ti.com 25-Sep-2013 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Pins Package Drawing Qty Eco Plan Lead/Ball Finish (2) MSL Peak Temp Op Temp (°C) Device Marking (3) (4/5) 5962-87552012A ACTIVE LCCC FK 20 1 TBD POST-PLATE N / A for Pkg Type -55 to 125 596287552012A SNJ54AC 244FK 5962-8755201RA ACTIVE CDIP J 20 1 TBD A42 N / A for Pkg Type -55 to 125 5962-8755201RA SNJ54AC244J 5962-8755201SA ACTIVE CFP W 20 1 TBD Call TI N / A for Pkg Type -55 to 125 5962-8755201SA SNJ54AC244W 5962-8755201VRA ACTIVE CDIP J 20 20 TBD A42 N / A for Pkg Type -55 to 125 5962-8755201VR A SNV54AC244J 5962-8755201VSA ACTIVE CFP W 20 1 TBD Call TI N / A for Pkg Type -55 to 125 5962-8755201VS A SNV54AC244W SN74AC244DBLE OBSOLETE SSOP DB 20 TBD Call TI Call TI -40 to 85 SN74AC244DBR ACTIVE SSOP DB 20 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM -40 to 85 AC244 SN74AC244DBRE4 ACTIVE SSOP DB 20 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM -40 to 85 AC244 SN74AC244DBRG4 ACTIVE SSOP DB 20 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM -40 to 85 AC244 SN74AC244DW ACTIVE SOIC DW 20 25 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM -40 to 85 AC244 SN74AC244DWE4 ACTIVE SOIC DW 20 25 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM -40 to 85 AC244 SN74AC244DWG4 ACTIVE SOIC DW 20 25 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM -40 to 85 AC244 SN74AC244DWR ACTIVE SOIC DW 20 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM -40 to 85 AC244 SN74AC244DWRE4 ACTIVE SOIC DW 20 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM -40 to 85 AC244 SN74AC244DWRG4 ACTIVE SOIC DW 20 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM -40 to 85 AC244 SN74AC244N ACTIVE PDIP N 20 20 Pb-Free (RoHS) CU NIPDAU N / A for Pkg Type -40 to 85 SN74AC244N Addendum-Page 1 Samples PACKAGE OPTION ADDENDUM www.ti.com Orderable Device 25-Sep-2013 Status (1) Package Type Package Pins Package Drawing Qty Eco Plan Lead/Ball Finish (2) MSL Peak Temp Op Temp (°C) Device Marking (3) (4/5) SN74AC244NE4 ACTIVE PDIP N 20 20 Pb-Free (RoHS) CU NIPDAU N / A for Pkg Type -40 to 85 SN74AC244N SN74AC244NSR ACTIVE SO NS 20 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM -40 to 85 AC244 SN74AC244NSRE4 ACTIVE SO NS 20 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM -40 to 85 AC244 SN74AC244NSRG4 ACTIVE SO NS 20 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM -40 to 85 AC244 SN74AC244PW ACTIVE TSSOP PW 20 70 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM -40 to 85 AC244 SN74AC244PWE4 ACTIVE TSSOP PW 20 70 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM -40 to 85 AC244 SN74AC244PWG4 ACTIVE TSSOP PW 20 70 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM -40 to 85 AC244 SN74AC244PWLE OBSOLETE TSSOP PW 20 TBD Call TI Call TI -40 to 85 SN74AC244PWR ACTIVE TSSOP PW 20 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM -40 to 85 AC244 SN74AC244PWRE4 ACTIVE TSSOP PW 20 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM -40 to 85 AC244 SN74AC244PWRG4 ACTIVE TSSOP PW 20 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM -40 to 85 AC244 SNJ54AC244FK ACTIVE LCCC FK 20 1 TBD POST-PLATE N / A for Pkg Type -55 to 125 596287552012A SNJ54AC 244FK SNJ54AC244J ACTIVE CDIP J 20 1 TBD A42 N / A for Pkg Type -55 to 125 5962-8755201RA SNJ54AC244J SNJ54AC244W ACTIVE CFP W 20 1 TBD Call TI N / A for Pkg Type -55 to 125 5962-8755201SA SNJ54AC244W (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. Addendum-Page 2 Samples PACKAGE OPTION ADDENDUM www.ti.com 25-Sep-2013 (2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability information and additional product content details. TBD: The Pb-Free/Green conversion plan has not been defined. Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes. Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above. Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material) (3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. (4) There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device. (5) Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation of the previous line and the two combined represent the entire Device Marking for that device. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. 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OTHER QUALIFIED VERSIONS OF SN54AC244, SN54AC244-SP, SN74AC244 : • Catalog: SN74AC244, SN54AC244 • Enhanced Product: SN74AC244-EP, SN74AC244-EP • Military: SN54AC244 • Space: SN54AC244-SP NOTE: Qualified Version Definitions: • Catalog - TI's standard catalog product • Enhanced Product - Supports Defense, Aerospace and Medical Applications Addendum-Page 3 PACKAGE OPTION ADDENDUM www.ti.com 25-Sep-2013 • Military - QML certified for Military and Defense Applications • Space - Radiation tolerant, ceramic packaging and qualified for use in Space-based application Addendum-Page 4 PACKAGE MATERIALS INFORMATION www.ti.com 26-Jan-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant SN74AC244DBR SSOP DB 20 2000 330.0 16.4 8.2 7.5 2.5 12.0 16.0 Q1 SN74AC244DWR SOIC DW 20 2000 330.0 24.4 10.8 13.0 2.7 12.0 24.0 Q1 SN74AC244NSR SO NS 20 2000 330.0 24.4 8.2 13.0 2.5 12.0 24.0 Q1 SN74AC244PWR TSSOP PW 20 2000 330.0 16.4 6.95 7.1 1.6 8.0 16.0 Q1 Pack Materials-Page 1 PACKAGE MATERIALS INFORMATION www.ti.com 26-Jan-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) SN74AC244DBR SN74AC244DWR SSOP DB 20 2000 367.0 367.0 38.0 SOIC DW 20 2000 367.0 367.0 45.0 SN74AC244NSR SO NS 20 2000 367.0 367.0 45.0 SN74AC244PWR TSSOP PW 20 2000 367.0 367.0 38.0 Pack Materials-Page 2 MECHANICAL DATA MSSO002E – JANUARY 1995 – REVISED DECEMBER 2001 DB (R-PDSO-G**) PLASTIC SMALL-OUTLINE 28 PINS SHOWN 0,38 0,22 0,65 28 0,15 M 15 0,25 0,09 8,20 7,40 5,60 5,00 Gage Plane 1 14 0,25 A 0°–ā8° 0,95 0,55 Seating Plane 2,00 MAX 0,10 0,05 MIN PINS ** 14 16 20 24 28 30 38 A MAX 6,50 6,50 7,50 8,50 10,50 10,50 12,90 A MIN 5,90 5,90 6,90 7,90 9,90 9,90 12,30 DIM 4040065 /E 12/01 NOTES: A. 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