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SN74LVC543APWR Datasheet(PDF) 1 Page - Texas Instruments |
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SN74LVC543APWR Datasheet(HTML) 1 Page - Texas Instruments |
1 / 12 page www.ti.com FEATURES DB, DW, OR PW PACKAGE (TOP VIEW) 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 LEBA OEBA A1 A2 A3 A4 A5 A6 A7 A8 CEAB GND VCC CEBA B1 B2 B3 B4 B5 B6 B7 B8 LEAB OEAB DESCRIPTION/ORDERING INFORMATION SN74LVC543A OCTAL REGISTERED TRANSCEIVER WITH 3-STATE OUTPUTS SCAS299H – JANUARY 1993 – REVISED MARCH 2005 • Operates From 1.65 V to 3.6 V • Inputs Accept Voltages to 5.5 V • Max tpd of 7 ns at 3.3 V • Typical VOLP (Output Ground Bounce) <0.8 V at VCC = 3.3 V, TA = 25°C • Typical VOHV (Output VOH Undershoot) >2 V at VCC = 3.3 V, TA = 25°C • Supports Mixed-Mode Signal Operation on All Ports (5-V Input/Output Voltage With 3.3-V VCC) • Ioff Supports Partial-Power-Down Mode Operation • Latch-Up Performance Exceeds 250 mA Per JESD 17 This octal registered transceiver is designed for 1.65-V to 3.6-V VCC operation. The SN74LVC543A contains two sets of D-type latches for temporary storage of data flowing in either direction. Separate latch-enable (LEAB or LEBA) and output-enable (OEAB or OEBA) inputs are provided for each register to permit independent control in either direction of data flow. The A-to-B enable (CEAB) input must be low to enter data from A or to output data from B. If CEAB is low and LEAB is low, the A-to-B latches are transparent; a subsequent low-to-high transition of LEAB places the A latches in the storage mode. With CEAB and OEAB both low, the 3-state B outputs are active and reflect the data present at the output of the A latches. Data flow for B to A is similar to that of A to B, but uses CEBA, LEBA, and OEBA. This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down. 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. Inputs can be driven from either 3.3-V or 5-V devices. This feature allows the use of these devices as translators in a mixed 3.3-V/5-V system environment. ORDERING INFORMATION TA PACKAGE(1) ORDERABLE PART NUMBER TOP-SIDE MARKING Tube of 25 SN74LVC543ADW SOIC – DW LVC543A Reel of 2000 SN74LVC543ADWR SSOP – DB Reel of 2000 SN74LVC543ADBR LC543A –40 °C to 85°C Tube of 60 SN74LVC543APW TSSOP – PW Reel of 2000 SN74LVC543APWR LC543A Reel of 250 SN74LVC543APWT (1) 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. PRODUCTION DATA information is current as of publication date. Copyright © 1993–2005, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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