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SN74ALVCH32244 Arkusz danych(PDF) 1 Page - Texas Instruments |
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SN74ALVCH32244 Arkusz danych(HTML) 1 Page - Texas Instruments |
1 / 12 page www.ti.com FEATURES DESCRIPTION/ORDERING INFORMATION SN74ALVCH32244 32-BIT BUFFER/DRIVER WITH 3-STATE OUTPUTS SCES281D – OCTOBER 1999 – REVISED SEPTEMBER 2004 • Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II • Member of the Texas Instruments Widebus+™ Family • ESD Protection Exceeds JESD 22 • Operates From 1.65 V to 3.6 V – 2000-V Human-Body Model (A114-A) • Max tpd of 3 ns at 3.3 V – 200-V Machine Model (A115-A) • ±24-mA Output Drive at 3.3 V – 1000-V Charged-Device Model (C101) • Bus Hold on Data Inputs Eliminates the Need for External Pullup/Pulldown Resistors This 32-bit buffer/driver is designed for 1.65-V to 3.6-V VCC operation. The SN74ALVCH32244 is designed specifically to improve the performance and density of 3-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters. The device can be used as eight 4-bit buffers, four 8-bit buffers, two 16-bit buffers, or one 32-bit buffer. It provides true outputs and symmetrical active-low output-enable (OE) inputs. 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 LFBGA - GKE SN74ALVCH32244KR -40 °C to 85°C Tape and reel ACH244 LFBGA - ZKE (Pb-free) 74ALVCH32244ZKER (1) Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package. FUNCTION TABLE (each 4-bit 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. Widebus+ is a trademark of Texas Instruments. PRODUCTION DATA information is current as of publication date. Copyright © 1999–2004, 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. |
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