74ALS244

SN54ALS244C TI | Alldatasheet

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SN54ALS244C, SN54AS244A, SN74ALS244C, SN74AS244A OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS SDAS142C – JULY 1987 – REVISED AUGUST 1995 Copyright  1995, Texas Instruments Incorporated 1POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

• 3-State Outputs Drive Bus Lines or Buffer Memory Address Registers
• pnp Inputs Reduce dc Loading
• Package Options Include Plastic Small-Outline (DW) Packages, Ceramic Chip Carriers (FK), and Standard Plastic (N) and Ceramic (J) 300-mil DIPs

description

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. With the ′ALS240A, ′ALS241C, ′AS240A, and ′AS241A, these devices provide the choice of selected combinations of inverting outputs, symmetrical active-low output-enable (OE ) inputs, and complementary OE and OE inputs. The -1 version of SN74ALS244C is identical to the standard version, except that the recommended maximum I OL for the -1 version is 48 mA. There is no -1 version of the SN54ALS244C. The SN54ALS244C and SN54AS244A are characterized for operation over the full military temperature range of –55°C to 125 °C. The SN74ALS244C and SN74AS244A are characterized for operation from 0°C to 70°C. FUNCTION TABLE (each buffer) INPUTS OUTPUT OE A Y L H H L LL H X Z 1OE 1A1 2Y4 1A2 2Y3 1A3 2Y2 1A4 2Y1 GND V CC 2OE 1Y1 2A4 1Y2 2A3 1Y3 2A2 1Y4 2A1 SN54ALS244C, SN54AS244A ...J PACKAGE SN74ALS244C, SN74AS244A . . . DW OR N PACKAGE (TOP VIEW) 3 2 1 20 19 91 0 1 1 1 2 1 3 1Y1 2A4 1Y2 2A3 1Y3 1A2 2Y3 1A3 2Y2 1A4 SN54ALS244C, SN54AS244A . . . FK PACKAGE (TOP VIEW)2Y4 1A1 1OE 1Y4 2A2 2OE 2Y1 GND 2A1 VCC 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.

SN54ALS244C, SN54AS244A, SN74ALS244C, SN74AS244A OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS SDAS142C – JULY 1987 – REVISED AUGUST 1995

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logic symbol† logic diagram (positive logic) 17 3 1A1 1A2 1A3 1A4 1Y1 2A1 2A2 2A3 2A4 2Y1 1Y2 1Y3 1Y4 2Y2 2Y3 2Y4 2OE 1OE 1A1 1A2 1A3 1A4 EN 1Y1 1Y2 1Y3 1Y4 2A1 2A2 2A3 2A4 EN 2Y1 2Y2 2Y3 2Y4 1OE 2OE † This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. absolute maximum ratings over operating free-air temperature range (unless otherwise noted)‡ ‡ 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.

SN54ALS244C, SN54AS244A, SN74ALS244C, SN74AS244A OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS SDAS142C – JULY 1987 – REVISED AUGUST 1995 3POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 recommended operating conditions SN54ALS244C SN74ALS244C UNIT MIN NOM MAX MIN NOM MAX UNIT VCC Supply voltage 4.5 5 5.5 4.5 5 5.5 V VIH High-level input voltage 2 2 V VIL Low level input voltage 0.8† 0.8 VVIL Low-level input voltage 0.7‡ V IOH High-level output current –12 –15 mA IOL Low level output current 12 24 mAIOL Low-level output current 48§ mA TA Operating free-air temperature –55 125 0 70 °C † Applies over temperature range –55°C to 70°C ‡ Applies over temperature range 70°C to 125°C § Applies only to the -1 version and only if VCC is between 4.75 V and 5.25 V electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS SN54ALS244C SN74ALS244C UNITPARAMETER TEST CONDITIONS MIN TYP ¶ MAX MIN TYP ¶ MAX UNIT VIK VCC = 4.5 V, II = –18 mA –1.5 –1.5 V VCC =45Vt o55V IOH = –0.4 mA VCC –2 VCC –2 VOH VCC = 4.5 V to 5.5 V IOH = –3 mA 2.4 3.2 2.4 3.2 VVOH VCC =45V IOH = –12 mA 2 V VCC = 4.5 V IOH = –15 mA 2 IOL = 12 mA 0.25 0.4 0.25 0.4 VOL VCC = 4.5 V IOL = 24 mA 0.35 0.5 V IOL = 48 mA (-1 version) 0.35 0.5 IOZH VCC = 5.5 V, VO = 2.7 V 20 20 µA IOZL VCC = 5.5 V, VO = 0.4 V –20 –20 µA II VCC = 5.5 V, VI = 7 V 0.1 0.1 mA IIH VCC = 5.5 V, VI = 2.7 V 20 20 µA IIL VCC = 5.5 V, VI = 0.4 V –0.1 –0.1 mA IO # VCC = 5.5 V, VO = 2.25 V –20 –1 12 –30 –1 12 mA Outputs high 9 18 9 17 ICC VCC = 5.5 V Outputs low 15 25 15 24 mA Outputs disabled 17 29 17 27 ¶ All typical values are at VCC = 5 V, TA = 25°C. # The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, IOS .

SN54ALS244C, SN54AS244A, SN74ALS244C, SN74AS244A OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS SDAS142C – JULY 1987 – REVISED AUGUST 1995

4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

switching characteristics (see Figure 1) PARAMETER FROM (INPUT) TO (OUTPUT) VCC = 4.5 V to 5.5 V, C L = 50 pF, R1 = 500 Ω , R2 = 500 Ω , TA = MIN to MAX† UNIT SN54ALS244C SN74ALS244C MIN MAX MIN MAX tPLH A Y 1 16 2 10 ns tPHL A Y 3 12 3 10 ns tPZH OE Y 1 26 3 20 ns tPZL OE Y 1 24 3 20 ns tPHZ OE Y 2 10 2 10 ns tPLZ OE Y 1 26 1 13 ns † For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions. absolute maximum ratings over operating free-air temperature range (unless otherwise noted)‡ ‡ 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. recommended operating conditions SN54AS244A SN74AS244A UNIT MIN NOM MAX MIN NOM MAX UNIT VCC Supply voltage 4.5 5 5.5 4.5 5 5.5 V VIH High-level input voltage 2 2 V VIL Low-level input voltage 0.8 0.8 V IOH High-level output current –12 –15 mA IOL Low-level output current 48 64 mA TA Operating free-air temperature –55 125 0 70 °C

SN54ALS244C, SN54AS244A, SN74ALS244C, SN74AS244A OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS SDAS142C – JULY 1987 – REVISED AUGUST 1995 5POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS SN54AS244A SN74AS244A UNITPARAMETER TEST CONDITIONS MIN TYP † MAX MIN TYP † MAX UNIT VIK VCC = 4.5 V, II = –18 mA –1.2 –1.2 V VCC = 4.5 V to 5.5 V,IOH = –2 mA VCC –2 VCC –2 VOH IOH = –3 mA 2.4 3.4 2.4 3.4 VVOH VCC = 4.5 V IOH = –12 mA 2.4 V IOH = –15 mA 2.4 VOL VCC =45V IOL = 48 mA 0.55 VVOL VCC = 4.5 V IOL = 64 mA 0.55 V IOZH VCC = 5.5 V, VO = 2.7 V 50 50 µA IOZL VCC = 5.5 V, VO = 0.4 V –50 –50 µA II VCC = 5.5 V, VI = 7 V 0.1 0.1 mA IIH VCC = 5.5 V, VI = 2.7 V 20 20 µA IIL OE VCC =55V VI=04V –0.5 –0.5 mAIIL A VCC = 5.5 V, VI = 0.4 V –1 –1 mA IO ‡ VCC = 5.5 V, VO = 2.25 V –50 –150 –50 –150 mA Outputs high 22 34 22 34 ICC VCC = 5.5 V Outputs low 60 90 60 90 mA Outputs disabled 34 54 34 54 † All typical values are at VCC = 5 V, TA = 25°C. ‡ The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, IOS . switching characteristics (see Figure 1) PARAMETER FROM (INPUT) TO (OUTPUT) VCC = 4.5 V to 5.5 V, C L = 50 pF, R1 = 500 Ω , R2 = 500 Ω , TA = MIN to MAX§ UNIT SN54AS244A SN74AS244A MIN MAX MIN MAX tPLH A Y 2 9 2 6.2 ns tPHL A Y 1 7 1 6.2 ns tPZH OE Y 1 10 1 9 ns tPZL OE Y 2 8 2 7.5 ns tPHZ OE Y 1 6.5 1 6 ns tPLZ OE Y 1 10.5 1 9 ns § For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.

6 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

NOTES: A. C L 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. When measuring propagation delay items of 3-state outputs, switch S1 is open. D. All input pulses have the following characteristics: PRR ≤ 1 MHz, tr = tf = 2 ns, duty cycle = 50%. E. The outputs are measured one at a time with one transition per measurement. Figure 1. Load Circuits and Voltage Waveforms

Orderable Device Status(1) Package Type Package Drawing Pins Package Qty Eco Plan(2) Lead/Ball FinishMSL Peak Temp (3) 5962-86839012A ACTIVE LCCC FK 20 1 TBD Call TI Level-NC-NC-NC 5962-8683901RA ACTIVE CDIP J 20 1 TBD Call TI Level-NC-NC-NC 5962-8683901SA ACTIVE CFP W 20 1 TBD Call TI Level-NC-NC-NC 5962-9755901Q2A ACTIVE LCCC FK 20 1 TBD Call TI Level-NC-NC-NC 5962-9755901QRA ACTIVE CDIP J 20 1 TBD Call TI Level-NC-NC-NC 5962-9755901QSA ACTIVE CFP W 20 1 TBD Call TI Level-NC-NC-NC JM38510/38303B2A ACTIVE LCCC FK 20 1 TBD Call TI Level-NC-NC-NC JM38510/38303BRA ACTIVE CDIP J 20 1 TBD Call TI Level-NC-NC-NC SN54ALS244CJ ACTIVE CDIP J 20 1 TBD Call TI Level-NC-NC-NC SN54AS244AJ ACTIVE CDIP J 20 1 TBD Call TI Level-NC-NC-NC SN74ALS244C-1DW ACTIVE SOIC DW 20 25 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74ALS244C-1DWE4 ACTIVE SOIC DW 20 25 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74ALS244C-1DWR ACTIVE SOIC DW 20 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74ALS244C-1DWRE4 ACTIVE SOIC DW 20 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74ALS244C-1N ACTIVE PDIP N 20 20 Pb-Free (RoHS) CU NIPDAU Level-NC-NC-NC SN74ALS244C-1NE4 ACTIVE PDIP N 20 20 Pb-Free (RoHS) CU NIPDAU Level-NC-NC-NC SN74ALS244C-1NSR ACTIVE SO NS 20 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74ALS244C-1NSRE4 ACTIVE SO NS 20 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74ALS244CDBLE OBSOLETE SSOP DB 20 TBD Call TI Call TI SN74ALS244CDBR ACTIVE SSOP DB 20 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74ALS244CDBRE4 ACTIVE SSOP DB 20 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74ALS244CDW ACTIVE SOIC DW 20 25 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74ALS244CDWE4 ACTIVE SOIC DW 20 25 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74ALS244CDWG4 ACTIVE SOIC DW 20 25 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74ALS244CDWR ACTIVE SOIC DW 20 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74ALS244CDWRE4 ACTIVE SOIC DW 20 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74ALS244CDWRG4 ACTIVE SOIC DW 20 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74ALS244CN ACTIVE PDIP N 20 20 Pb-Free (RoHS) CU NIPDAU Level-NC-NC-NC SN74ALS244CNE4 ACTIVE PDIP N 20 20 Pb-Free (RoHS) CU NIPDAU Level-NC-NC-NC PACKAGE OPTION ADDENDUM www.ti.com 26-Sep-2005 Addendum-Page 1

Orderable Device Status(1) Package Type Package Drawing Pins Package Qty Eco Plan(2) Lead/Ball FinishMSL Peak Temp (3) SN74ALS244CNSR ACTIVE SO NS 20 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74ALS244CNSRE4 ACTIVE SO NS 20 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74ALS244CNSRG4 ACTIVE SO NS 20 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74AS244ADW ACTIVE SOIC DW 20 25 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74AS244ADWE4 ACTIVE SOIC DW 20 25 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74AS244ADWR ACTIVE SOIC DW 20 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74AS244ADWRE4 ACTIVE SOIC DW 20 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74AS244AN ACTIVE PDIP N 20 20 Pb-Free (RoHS) CU NIPDAU Level-NC-NC-NC SN74AS244ANE4 ACTIVE PDIP N 20 20 Pb-Free (RoHS) CU NIPDAU Level-NC-NC-NC SN74AS244ANSR ACTIVE SO NS 20 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74AS244ANSRE4 ACTIVE SO NS 20 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SNJ54ALS244CFK ACTIVE LCCC FK 20 1 TBD Call TI Level-NC-NC-NC SNJ54ALS244CJ ACTIVE CDIP J 20 1 TBD Call TI Level-NC-NC-NC SNJ54ALS244CW ACTIVE CFP W 20 1 TBD Call TI Level-NC-NC-NC SNJ54AS244AFK ACTIVE LCCC FK 20 1 TBD Call TI Level-NC-NC-NC SNJ54AS244AJ ACTIVE CDIP J 20 1 TBD Call TI Level-NC-NC-NC SNJ54AS244AW ACTIVE CFP W 20 1 TBD Call TI Level-NC-NC-NC (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) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS) or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontentfor 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. 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. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited PACKAGE OPTION ADDENDUM www.ti.com 26-Sep-2005 Addendum-Page 2

information may not be available for release. In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis. PACKAGE OPTION ADDENDUM www.ti.com 26-Sep-2005 Addendum-Page 3

MLCC006B – OCTOBER 1996 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 FK (S-CQCC-N**) LEADLESS CERAMIC CHIP CARRIER 4040140/D 10/96

28 TERMINAL SHOWN

B 0.358 (9,09) MAX (11,63) 0.560 (14,22) 0.560 0.458 0.858 (21,8) 1.063 (27,0) (14,22) ANO. OF MINMAX 0.358 0.660 0.761 0.458 0.342 (8,69) MIN (11,23) (16,26) 0.640 0.739 0.442 (9,09) (11,63) (16,76) 0.962 1.165 (23,83) 0.938 (28,99) 1.141 (24,43) (29,59) (19,32)(18,78) 0.020 (0,51) TERMINALS 0.080 (2,03) 0.064 (1,63) (7,80) 0.307 (10,31) 0.406 (12,58) 0.495 (12,58) 0.495 (21,6) 0.850 (26,6) 1.047 0.045 (1,14) 0.045 (1,14) 0.035 (0,89) 0.035 (0,89) 0.010 (0,25) 121314151618 17 432 0.020 (0,51) 0.010 (0,25) 12826 27 B SQ A SQ 0.055 (1,40) 0.045 (1,14) 0.028 (0,71) 0.022 (0,54) 0.050 (1,27) NOTES: A. All linear dimensions are in inches (millimeters). B. This drawing is subject to change without notice. C. This package can be hermetically sealed with a metal lid. D. The terminals are gold plated. E. Falls within JEDEC MS-004

MSSO002E – JANUARY 1995 – REVISED DECEMBER 2001 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 DB (R-PDSO-G**) PLASTIC SMALL-OUTLINE 4040065 /E 12/01

28 PINS SHOWN

8,20 7,40 0,55 0,95 0,25 12,90 12,30 10,50 8,50 Seating Plane 9,907,90 10,50 9,90 0,38 5,60 5,00 0,22 A 2016 6,506,50 0,05 MIN 5,905,90 DIM A MAX A MIN PINS ** 2,00 MAX 6,90 7,50 0,65 M0,15 0°–/C02578° 0,10 0,09 0,25 NOTES: A. All linear dimensions are in millimeters. B. This drawing is subject to change without notice. C. Body dimensions do not include mold flash or protrusion not to exceed 0,15. D. Falls within JEDEC MO-150

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