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SN74LVCZ244ANSR Datasheet(PDF) 1 Page - Texas Instruments |
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SN74LVCZ244ANSR Datasheet(HTML) 1 Page - Texas Instruments |
1 / 16 page SN74LVCZ244A OCTAL BUFFER/DRIVER WITH 3-STATE OUTPUTS SCES274H – JUNE 1999 – REVISED AUGUST 2003 1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 D Operates From 2.7 V to 3.6 V D Inputs Accept Voltages to 5.5 V D Max tpd of 5.9 ns at 3.3 V D Typical VOLP (Output Ground Bounce) <0.8 V at VCC = 3.3 V, TA = 25°C D Typical VOHV (Output VOH Undershoot) >2 V at VCC = 3.3 V, TA = 25°C D Ioff and Power-Up 3-State Support Hot Insertion D Supports Mixed-Mode Signal Operation on All Ports (5-V Input/Output Voltage With 3.3-V VCC) D Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II description/ordering information This octal buffer/line driver is designed for 2.7-V to 3.6-V VCC operation. The SN74LVCZ244A 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. Inputs can be driven from either 3.3-V or 5-V devices. This feature allows the use of this device as a translator in a mixed 3.3-V/5-V system environment. When VCC is between 0 and 1.5 V, the device is in the high-impedance state during power up or power down. However, to ensure the high-impedance state above 1.5 V, 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. ORDERING INFORMATION TA PACKAGE† ORDERABLE PART NUMBER TOP-SIDE MARKING –40 C to 85 C PDIP – N Tube of 20 SN74LVCZ244AN SN74LVCZ244AN –40 C to 85 C SOIC – DW Tube of 25 SN74LVCZ244ADW LVCZ244A –40 C to 85 C SOIC – DW Reel of 2000 SN74LVCZ244ADWR LVCZ244A –40 °C to 85°C SOP – NS Reel of 2000 SN74LVCZ244ANSR LVCZ244A –40 °C to 85°C SSOP – DB Reel of 2000 SN74LVCZ244ADBR CV244A TSSOP – PW Tube of 70 SN74LVCZ244APW CV244A TSSOP – PW Reel of 2000 SN74LVCZ244APWR CV244A Reel of 250 SN74LVCZ244APWT † Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package. Copyright 2003, 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. 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 DB, DW, N, NS, OR PW PACKAGE (TOP VIEW) |
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