SCAS354J − FEBRUARY 1994 − REVISED SEPTEMBER 2003 D Supports Mixed-Mode Signal Operation D 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 1A1 2Y4 1A2 2Y3 1A3 2Y2 1A4 2Y1 1 20 19 2OE 18 1Y1 2 3 17 2A4 16 1Y2 4 5 15 2A3 14 1Y3 6 7 13 2A2 12 1Y4 8 9 10 11 2A1 1OE 1A1 2Y4 1A2 2Y3 1A3 2Y2 1A4 2Y1 GND RGY PACKAGE (TOP VIEW) VCC DB, DW, NS, OR PW PACKAGE (TOP VIEW) 1OE D D Insertion Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II ESD Protection Exceeds JESD 22 − 2000-V Human-Body Model (A114-A) − 200-V Machine Model (A115-A) − 1000-V Charged-Device Model (C101) GND D D Ioff and Power-Up 3-State Support Hot (5-V Input and Output Voltages With 3.3-V VCC) Supports Unregulated Battery Operation Down to 2.7 V Typical VOLP (Output Ground Bounce) <0.8 V at VCC = 3.3 V, TA = 25°C description/ordering information This octal buffer and line driver is designed specifically for low-voltage (3.3-V) VCC operation, but with the capability to provide a TTL interface to a 5-V system environment. The SN74LVT244B is organized as two 4-bit line drivers with separate output-enable (OE) inputs. When OE is low, the device passes data from the A inputs to the Y outputs. When OE is high, the outputs are in the high-impedance state. ORDERING INFORMATION QFN − RGY TOP-SIDE MARKING Tape and reel SN74LVT244BRGYR Tube SN74LVT244BDW Tape and reel SN74LVT244BDWR SOP − NS Tape and reel SN74LVT244BNSR LVT244B SSOP − DB Tape and reel SN74LVT244BDBR LX244B Tube SN74LVT244BPW Tape and reel SN74LVT244BPWR SOIC − DW −40°C −40 C to 85 85°C C ORDERABLE PART NUMBER PACKAGE† TA TSSOP − PW VFBGA − GQN VFBGA − ZQN (Pb-free) LX244B LVT244B LX244B SN74LVT244BGQNR Tape and reel SN74LVT244BZQNR LX244B † 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 !" # $%&" !# '%()$!" *!"& *%$"# $ " #'&$$!"# '& "+& "&# &,!# #"%&"# #"!*!* -!!". *%$" '$&##/ *&# " &$&##!). $)%*& "&#"/ !)) '!!&"&# POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 1 SCAS354J − FEBRUARY 1994 − REVISED SEPTEMBER 2003 description/ordering information (continued) 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. This device is fully specified for hot-insertion applications using Ioff and power-up 3-state. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down. The power-up 3-state circuitry places the outputs in the high-impedance state during power up and power down, which prevents driver conflict. GQN OR ZQN PACKAGE (TOP VIEW) 1 2 3 terminal assignments 4 1 2 3 4 A A 1A1 1OE B 1A2 2A4 VCC 2Y4 2OE B C C 1A3 2Y3 2A3 1Y2 D D 1A4 2A2 2Y2 1Y3 E E GND 2Y1 2A1 1Y4 1Y1 FUNCTION TABLE (each 4-bit 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 Pin numbers shown are for the DB, DW, NS, PW, and RGY packages. 2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 2Y1 2Y2 2Y3 2Y4 SCAS354J − FEBRUARY 1994 − REVISED SEPTEMBER 2003 absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to 4.6 V Input voltage range, VI (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to 7 V Voltage range applied to any output in the high-impedance or power-off state, VO (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to 7 V Voltage range applied to any output in the high state, VO (see Note 1) . . . . . . . . . . . . . −0.5 V to VCC + 0.5 V Current into any output in the low state, IO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128 mA Current into any output in the high state, IO (see Note 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64 mA Input clamp current, IIK (VI < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −50 mA Output clamp current, IOK (VO < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −50 mA Package thermal impedance, θJA (see Note 3): DB package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70°C/W (see Note 3): DW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58°C/W (see Note 3): GQN/ZQN package . . . . . . . . . . . . . . . . . . . . . . . . . . . 78°C/W (see Note 3): NS package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60°C/W (see Note 3): PW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83°C/W (see Note 4): RGY package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37°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 negative-voltage ratings may be exceeded if the input and output clamp-current ratings are observed. 2. This current flows only when the output is in the high state and VO > VCC. 3. The package thermal impedance is calculated in accordance with JESD 51-7. 4. The package thermal impedance is calculated in accordance with JESD 51-5. recommended operating conditions (see Note 5) MIN MAX 2.7 3.6 UNIT VCC VIH Supply voltage VIL VI Low-level input voltage Input voltage 5.5 V IOH IOL High-level output current −32 mA ∆t/∆v Input transition rise or fall rate ∆t/∆VCC TA Power-up ramp rate 200 Operating free-air temperature −40 High-level input voltage 2 V 0.8 Low-level output current Outputs enabled V V 64 mA 10 ns/V µs/V 85 °C NOTE 5: All unused inputs of the device must 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 SCAS354J − FEBRUARY 1994 − REVISED SEPTEMBER 2003 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP† MAX UNIT −1.2 V VIK VCC = 2.7 V, VCC = 2.7 V to 3.6 V, II = −18 mA IOH = −100 µA VOH VCC = 2.7 V, VCC = 3 V, IOH = −8 mA IOH = −32 mA IOL = 100 µA IOL = 24 mA 0.2 VCC = 2.7 V IOL = 16 mA IOL = 32 mA 0.4 IOL = 64 mA VI = 5.5 V 0.55 VOL VCC = 3 V Control inputs VCC = 0 or 3.6 V, VCC = 3.6 V, Data inputs VCC = 3.6 V II VCC−0.2 2.4 V 2 0.5 V 0.5 10 ±1 VI = VCC or GND VI = VCC 1 VI = 0 VI or VO = 0 to 4.5 V µA A −5 ±100 µA 5 µA −5 µA ±100 µA Ioff IOZH VCC = 0, VCC = 3.6 V, IOZL VCC = 3.6 V, IOZPU VCC = 0 to 1.5 V, VO = 0.5 V to 3 V, OE = don’t care IOZPD VCC = 1.5 V to 0, VO = 0.5 V to 3 V, OE = don’t care ±100 µA ICC VCC = 3.6 V, IO = 0, VI = VCC or GND VO = 3 V VO = 0.5 V Outputs high 5 Outputs disabled ∆ICC‡ VCC = 3 V to 3.6 V, One input at VCC − 0.6 V, Other inputs at VCC or GND Ci VI = 3 V or 0 VO = 3 V or 0 Co 0.19 Outputs low mA 0.19 0.2 mA 4 pF 7 pF † All typical values are at VCC = 3.3 V, TA = 25°C. ‡ This is the increase in supply current for each input that is at the specified TTL voltage level, rather than VCC or GND. switching characteristics over recommended operating free-air temperature range, CL = 50 pF (unless otherwise noted) (see Figure 1) FROM (INPUT) TO (OUTPUT) tPLH tPHL A Y tPZH tPZL OE Y tPHZ tPLZ OE Y PARAMETER † All typical values are at VCC = 3.3 V, TA = 25°C. 4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 VCC = 3.3 V ± 0.3 V VCC = 2.7 V MIN TYP† MAX 1.1 2.3 3.5 3.8 1.3 2.1 3.3 3.6 1.1 2.5 4.5 5.3 1.4 2.7 4.4 4.9 1.9 2.8 4.4 4.5 1.8 2.9 4.4 4.4 MIN UNIT MAX ns ns ns SCAS354J − FEBRUARY 1994 − REVISED SEPTEMBER 2003 PARAMETER MEASUREMENT INFORMATION 500 Ω From Output Under Test 6V Open S1 GND CL = 50 pF (see Note A) 500 Ω TEST S1 tPLH/tPHL tPLZ/tPZL tPHZ/tPZH Open 6V GND 2.7 V LOAD CIRCUIT Timing Input 1.5 V 0V tw tsu 2.7 V Input 1.5 V th 2.7 V 1.5 V Data Input 1.5 V 1.5 V 0V 0V VOLTAGE WAVEFORMS PULSE DURATION VOLTAGE WAVEFORMS SETUP AND HOLD TIMES 2.7 V 2.7 V 1.5 V Input Output Control 1.5 V 0V Output Waveform 1 S1 at 6 V (see Note B) VOH 1.5 V Output 1.5 V VOL VOH Output 1.5 V tPLZ 3V 1.5 V tPZH tPLH tPHL 1.5 V VOL Output Waveform 2 S1 at GND (see Note B) VOLTAGE WAVEFORMS PROPAGATION DELAY TIMES INVERTING AND NONINVERTING OUTPUTS 1.5 V 0V tPZL tPHL tPLH 1.5 V VOL + 0.3 V VOL tPHZ 1.5 V VOH − 0.3 V VOH ≈0 V VOLTAGE WAVEFORMS ENABLE AND DISABLE TIMES LOW- AND HIGH-LEVEL ENABLING 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 ≤ 10 MHz, ZO = 50 Ω, tr ≤ 2.5 ns, tf ≤ 2.5 ns. D. The outputs are measured one at a time with one transition per measurement. E. All parameters and waveforms are not applicable to all devices. Figure 1. Load Circuit and Voltage Waveforms POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 5 PACKAGE OPTION ADDENDUM www.ti.com 6-Dec-2006 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Drawing SN74LVT244BDB OBSOLETE SSOP DB 20 SN74LVT244BDBLE OBSOLETE SSOP DB 20 SN74LVT244BDBR ACTIVE SSOP DB 20 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74LVT244BDBRE4 ACTIVE SSOP DB 20 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74LVT244BDW ACTIVE SOIC DW 20 25 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74LVT244BDWE4 ACTIVE SOIC DW 20 25 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74LVT244BDWG4 ACTIVE SOIC DW 20 25 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74LVT244BDWR ACTIVE SOIC DW 20 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74LVT244BDWRE4 ACTIVE SOIC DW 20 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74LVT244BDWRG4 ACTIVE SOIC DW 20 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74LVT244BGQNR ACTIVE GQN 20 1000 SNPB Level-1-240C-UNLIM SN74LVT244BNSR ACTIVE SO NS 20 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74LVT244BNSRG4 ACTIVE SO NS 20 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74LVT244BPW ACTIVE TSSOP PW 20 70 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74LVT244BPWE4 ACTIVE TSSOP PW 20 70 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74LVT244BPWLE OBSOLETE TSSOP PW 20 TBD Call TI SN74LVT244BPWR ACTIVE TSSOP PW 20 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74LVT244BPWRE4 ACTIVE TSSOP PW 20 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74LVT244BPWRG4 ACTIVE TSSOP PW 20 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74LVT244BRGYR ACTIVE QFN RGY 20 1000 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1YEAR SN74LVT244BRGYRG4 ACTIVE QFN RGY 20 1000 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1YEAR SN74LVT244BZQNR ACTIVE ZQN 20 1000 Green (RoHS & no Sb/Br) SNAGCU Level-1-260C-UNLIM BGA MI CROSTA R JUNI OR BGA MI CROSTA R JUNI OR Pins Package Eco Plan (2) Qty Green (RoHS & no Sb/Br) TBD (1) TBD Lead/Ball Finish CU NIPDAU Call TI MSL Peak Temp (3) Level-1-260C-UNLIM Call TI Call TI 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 Addendum-Page 1 PACKAGE OPTION ADDENDUM www.ti.com 6-Dec-2006 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), 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. 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 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. Addendum-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. B. C. D. All linear dimensions are in millimeters. This drawing is subject to change without notice. Body dimensions do not include mold flash or protrusion not to exceed 0,15. Falls within JEDEC MO-150 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 MECHANICAL DATA MTSS001C – JANUARY 1995 – REVISED FEBRUARY 1999 PW (R-PDSO-G**) PLASTIC SMALL-OUTLINE PACKAGE 14 PINS SHOWN 0,30 0,19 0,65 14 0,10 M 8 0,15 NOM 4,50 4,30 6,60 6,20 Gage Plane 0,25 1 7 0°– 8° A 0,75 0,50 Seating Plane 0,15 0,05 1,20 MAX PINS ** 0,10 8 14 16 20 24 28 A MAX 3,10 5,10 5,10 6,60 7,90 9,80 A MIN 2,90 4,90 4,90 6,40 7,70 9,60 DIM 4040064/F 01/97 NOTES: A. B. C. D. All linear dimensions are in millimeters. This drawing is subject to change without notice. Body dimensions do not include mold flash or protrusion not to exceed 0,15. Falls within JEDEC MO-153 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. 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