SN54LVT244, SN74LVT244 3.3-V ABT OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS SCBS135B – AUGUST 1992 – REVISED MARCH 1994 • • • • • • 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 SN54LVT244 . . . FK PACKAGE (TOP VIEW) 1A2 2Y3 1A3 2Y2 1A4 2OE • 1OE 1A1 2Y4 1A2 2Y3 1A3 2Y2 1A4 2Y1 GND 2Y4 1A1 1OE VCC • SN54LVT244 . . . J OR W PACKAGE SN74LVT244 . . . DB, DW, OR PW PACKAGE (TOP VIEW) State-of-the-Art Advanced BiCMOS Technology (ABT) Design for 3.3-V Operation and Low Static Power Dissipation Support Mixed-Mode Signal Operation (5-V Input and Output Voltages With 3.3-V VCC) Support Unregulated Battery Operation Down to 2.7 V Typical VOLP (Output Ground Bounce) < 0.8 V at VCC = 3.3 V, TA = 25°C ESD Protection Exceeds 2000 V Per MIL-STD-883C, Method 3015; Exceeds 200 V Using Machine Model (C = 200 pF, R = 0) Latch-Up Performance Exceeds 500 mA Per JEDEC Standard JESD-17 Bus-Hold Data Inputs Eliminate the Need for External Pullup Resistors Supports Live Insertion Package Options Include Plastic Small-Outline (DW), Shrink Small-Outline (DB), and Thin Shrink Small-Outline (PW) Packages, Ceramic Chip Carriers (FK), Ceramic Flatpacks (W), and Ceramic DIPS (J) 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 • description These octal buffers and line drivers are 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 ’LVT244 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. Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level. 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. The SN74LVT244 is packaged in TI’s shrink small-outline package (DB), which provides the same I/O pin count and functionality of standard small-outline packages in less than half the printed-circuit-board area. The SN54LVT244 is characterized for operation over the full military temperature range of – 55°C to 125°C. The SN74LVT244 is characterized for operation from – 40°C to 85°C. FUNCTION TABLE (each buffer) INPUTS OE A OUTPUT Y L H H L L L H X Z Copyright 1994, 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. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 LVT244–5 2–1 SN54LVT244, SN74LVT244 3.3-V ABT OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS SCBS135B – AUGUST 1992 – REVISED MARCH 1994 logic symbol† 1OE 1A1 1A2 1A3 1A4 1 logic diagram (positive logic) 1OE 2 18 4 16 6 14 8 12 1Y1 1A1 2OE 1Y3 1A2 2A2 2A3 2A4 18 4 16 6 EN 11 9 13 7 15 5 17 3 1Y1 1Y2 1Y4 1A4 2A1 2 1Y2 1A3 19 1 EN 8 14 1Y3 12 1Y4 2Y1 2Y2 2Y3 2OE 19 2Y4 2A1 11 9 13 7 15 5 17 3 † This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. 2A2 2A3 2A4 2Y1 2Y2 2Y3 2Y4 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 state or power-off state, VO (see Note 1) . . . . – 0.5 V to 7 V Current into any output in the low state, IO: SN54LVT244 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96 mA SN74LVT244 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128 mA Current into any output in the high state, IO (see Note 2): SN54LVT244 . . . . . . . . . . . . . . . . . . . . . . . . . 48 mA SN74LVT244 . . . . . . . . . . . . . . . . . . . . . . . . . 64 mA Input clamp current, IIK (VI < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 50 mA Output clamp current, IOK (VO < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 50 mA Maximum power dissipation at TA = 55°C (in still air) (see Note 3): DB package . . . . . . . . . . . . . . . . . . . . 0.6 W DW package . . . . . . . . . . . . . . . . . . . 1.6 W PW package . . . . . . . . . . . . . . . . . . . 0.7 W Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 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 will only flow when the output is in the high state and VO > VCC. 3. The maximum package power dissipation is calculated using a junction temperature of 150°C and a board trace length of 750 mils. For more information, refer to the Package Thermal Considerations application note. 2–2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 LVT244–5 SN54LVT244, SN74LVT244 3.3-V ABT OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS SCBS135B – AUGUST 1992 – REVISED MARCH 1994 recommended operating conditions (see Note 4) SN54LVT244 SN74LVT244 MIN MAX MIN MAX 2.7 3.6 2.7 3.6 UNIT VCC VIH Supply voltage VIL VI Low-level input voltage 0.8 0.8 Input voltage 5.5 5.5 V IOH IOL High-level output current – 24 – 32 mA 48 64 mA ∆t/∆v Input transition rise or fall rate 10 10 ns / V 85 °C High-level input voltage 2 Low-level output current Outputs enabled TA Operating free-air temperature NOTE 4: Unused or floating control inputs must be held high or low. POST OFFICE BOX 655303 – 55 • DALLAS, TEXAS 75265 2 125 – 40 V V V LVT244–5 2–3 SN54LVT244, SN74LVT244 3.3-V ABT OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS SCBS135B – AUGUST 1992 – REVISED MARCH 1994 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER VIK VOH SN54LVT244 TYP† MAX TEST CONDITIONS VCC = 2.7 V, VCC = MIN to MAX‡, II = –18 mA IOH = –100 µA VCC = 2.7 V, VCC = 3 V, IOH = – 8 mA IOH = – 24 mA VCC = 3 V, VCC = 2.7 V, IOH = – 32 mA IOL = 100 µA VCC = 2.7 V, VCC = 3 V, MIN SN74LVT244 TYP† MAX MIN –1.2 VCC – 0.2 2.4 –1.2 VCC – 0.2 2.4 2 0.2 IOL = 24 mA IOL = 16 mA 0.5 0.5 0.4 0.4 VCC = 3 V, VCC = 3 V, IOL = 32 mA IOL = 48 mA 0.5 0.5 VCC = 3 V, VCC = 0 or MAX‡, IOL = 64 mA VI = 5.5 V VCC = 3.6 V, VCC = 3.6 V, VI = VCC or GND VI = VCC VCC = 3.6 V, VCC = 0, VI = 0 VI or VO = 0 to 4.5 V II(hold) I(h ld) VCC = 3 V, VCC = 3 V, VI = 0.8 V VI = 2 V IOZH IOZL VCC = 3.6 V, VCC = 3.6 V, VO = 3 V VO = 0.5 V ICC VCC = 3.6 V, VI = VCC or GND IO = 0, II Ioff V 0.55 0.55 Control pins Data pins 50 10 ±1 ±1 1 1 –5 A inputs 75 75 –75 –75 1 1 µA –1 –1 µA 0.12 0.39 0.12 0.19 Outputs low 8.6 14 8.6 12 0.12 0.39 0.12 0.19 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 µA µA Outputs high Outputs disabled µA –5 ± 100 ∆ICC§ Co V V 2 0.2 VOL UNIT 0.3 0.2 mA mA 4 4 pF 8 8 pF † All typical values are at VCC = 3.3 V, TA = 25°C. ‡ For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions. § This is the increase in supply current for each input that is at the specified TTL voltage level rather than VCC or GND. 2–4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 LVT244–5 SN54LVT244, SN74LVT244 3.3-V ABT OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS SCBS135B – AUGUST 1992 – REVISED MARCH 1994 switching characteristics over recommended operating free-air temperature range, CL = 50 pF (unless otherwise noted) (see Note 5) SN54LVT244 PARAMETER FROM (INPUT) TO (OUTPUT) tPLH tPHL A Y tPZH tPZL OE Y tPHZ tPLZ OE Y VCC = 3.3 V ± 0.3 V MIN MAX 0.5 0.5 SN74LVT244 VCC = 2.7 V MIN VCC = 3.3 V ± 0.3 V VCC = 2.7 V MAX MIN TYP MAX MIN 4.7 5.2 1 2.5 4.3 5 4.4 5.4 1 2.5 4.2 5.2 0.8 5.4 6.5 1 2.7 5.2 6.3 0.8 5.4 7.6 1.1 3.1 5.2 6.7 1.5 6.2 6.9 2.1 3.9 5.6 6.3 1.2 5.5 6 1.8 3.2 5.1 5.6 UNIT MAX ns ns ns NOTE 5: Load circuit and voltage waveforms are shown in Section 1. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 LVT244–5 2–5 PACKAGE OPTION ADDENDUM www.ti.com 18-Sep-2008 PACKAGING INFORMATION Orderable Device Status (1) Package Type SN74LVT244DBLE OBSOLETE SSOP DB 20 TBD Call TI Call TI SN74LVT244DW OBSOLETE SOIC DW 20 TBD Call TI Call TI Package Drawing Pins Package Eco Plan (2) Qty Lead/Ball Finish MSL Peak Temp (3) SN74LVT244DWR OBSOLETE SOIC DW 20 TBD Call TI Call TI SN74LVT244PWLE OBSOLETE TSSOP PW 20 TBD Call TI Call TI SNJ54LVT244FK OBSOLETE LCCC FK 20 TBD Call TI Call TI SNJ54LVT244J OBSOLETE CDIP J 20 TBD Call TI Call TI SNJ54LVT244W OBSOLETE CFP W 20 TBD Call TI Call TI (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), 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. 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Addendum-Page 1 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 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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