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SN74ALVCH244DWRG4 Fiches technique(PDF) 1 Page - Texas Instruments |
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SN74ALVCH244DWRG4 Fiches technique(HTML) 1 Page - Texas Instruments |
1 / 16 page www.ti.com FEATURES 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 DGV, DW, NS, OR PW PACKAGE (TOP VIEW) DESCRIPTION/ORDERING INFORMATION SN74ALVCH244 OCTAL BUFFER/DRIVER WITH 3-STATE OUTPUTS SCES112F – JULY 1997 – REVISED AUGUST 2004 • Operates From 1.65 V to 3.6 V • Max tpd of 2.8 ns at 3.3 V • ±24-mA Output Drive at 3.3 V • Bus Hold on Data Inputs Eliminates the Need for External Pullup/Pulldown Resistors • Latch-Up Performance Exceeds 250 mA Per JESD 17 • ESD Protection Exceeds JESD 22 – 2000-V Human-Body Model (A114-A) – 200-V Machine Model (A115-A) This octal buffer/line driver is designed for 1.65-V to 3.6-V VCC operation. The SN74ALVCH244 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. 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. Active bus-hold circuitry holds unused or undriven inputs at a valid logic state. Use of pullup or pulldown resistors with the bus-hold circuitry is not recommended. ORDERING INFORMATION TA PACKAGE(1) ORDERABLE PART NUMBER TOP-SIDE MARKING Tube SN74ALVCH244DW SOIC - DW ALVCH244 Tape and reel SN74ALVCH244DWR SOP - NS Tape and reel SN74ALVCH244NSR ALVCH244 -40 °C to 85°C Tube SN74ALVCH244PW TSSOP - PW VB244 Tape and reel SN74ALVCH244PWR TVSOP - DGV Tape and reel SN74ALVCH244DGVR VB244 (1) Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package. FUNCTION TABLE (each buffer) INPUTS OUTPUT Y OE A L H H L L L 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. PRODUCTION DATA information is current as of publication date. Copyright © 1997–2004, 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. |
Numéro de pièce similaire - SN74ALVCH244DWRG4 |
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Description similaire - SN74ALVCH244DWRG4 |
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