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SN74HC244-EP Datasheet(PDF) 1 Page - Texas Instruments |
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SN74HC244-EP Datasheet(HTML) 1 Page - Texas Instruments |
1 / 14 page SN74HC244EP OCTAL BUFFER AND LINE DRIVER WITH 3STATE OUTPUTS SCLS463A − JULY 2002 − REVISED JANUARY 2004 1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 D Controlled Baseline − One Assembly/Test Site, One Fabrication Site D Extended Temperature Performance of Up To −55 °C to 125°C D Enhanced Diminishing Manufacturing Sources (DMS) Support D Enhanced Product-Change Notification D Qualification Pedigree† D 3-State Outputs Drive Bus Lines or Buffer Memory Address Registers D High-Current Outputs Drive Up To 15 LSTTL Loads † Component qualification in accordance with JEDEC and industry standards to ensure reliable operation over an extended temperature range. This includes, but is not limited to, Highly Accelerated Stress Test (HAST) or biased 85/85, temperature cycle, autoclave or unbiased HAST, electromigration, bond intermetallic life, and mold compound life. description/ordering information This octal buffer and line driver is designed specifically to improve both the performance and density of 3-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters. The SN74HC244 is 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. ORDERING INFORMATION TA PACKAGE‡ ORDERABLE PART NUMBER TOP-SIDE MARKING −40 °C to 125°C SOP − DW Tape and reel SN74HC244QDWREP SHC244EP −40 °C to 125°C TSSOP − PW Tape and reel SN74HC244QPWREP SHC244EP −55 °C to 125°C SOP − DW Tape and reel SN74HC244MDWREP HC244MEP ‡ Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package. FUNCTION TABLE (each buffer/driver) INPUTS OUTPUT OE A OUTPUT Y L H H L LL H X Z 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. 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 1OE 1A1 2Y4 1A2 2Y3 1A3 2Y2 1A4 2Y1 GND VCC 2OE 1Y1 2A4 1Y2 2A3 1Y3 2A2 1Y4 2A1 DW OR PW PACKAGE (TOP VIEW) Copyright 2004, 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. |
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