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SN74ACT244-Q1 数据表(PDF) 1 Page - Texas Instruments |
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SN74ACT244-Q1 数据表(HTML) 1 Page - Texas Instruments |
1 / 8 page SN74ACT244Q1 OCTAL BUFFER/DRIVER WITH 3STATE OUTPUTS SCAS766B − APRIL 2004 − REVISED JANUARY 2008 1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 D Qualified for Automotive Applications D 4.5-V to 5.5-V VCC Operation D Inputs Accept Voltages to 5.5 V D Max tpd of 9 ns at 5 V D Inputs Are TTL Compatible description/ordering information This octal buffer/driver is designed specifically to improve the performance and density of 3-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters. The SN74ACT244 device 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. To ensure the high-impedance state during power up or power down, OE shall be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver. ORDERING INFORMATION† TA PACKAGE‡ ORDERABLE PART NUMBER TOP-SIDE MARKING −40 °C to 85°C TSSOP − PW Tape and reel SN74ACT244IPWRQ1 ACT244I † For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI web site at www.ti.com. ‡ Package drawings, thermal data, and symbolization are available at www.ti.com/packaging. FUNCTION TABLE (each buffer) INPUTS OUTPUT OE A OUTPUT Y L H H L LL H X Z Copyright 2008, 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. 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. PW PACKAGE (TOP VIEW) 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 |
类似零件编号 - SN74ACT244-Q1 |
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类似说明 - SN74ACT244-Q1 |
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