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SN74ALVCH162260 Folha de dados(PDF) 1 Page - Texas Instruments |
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SN74ALVCH162260 Folha de dados(HTML) 1 Page - Texas Instruments |
1 / 11 page SN74ALVCH162260 12-BIT TO 24-BIT MULTIPLEXED D-TYPE LATCH WITH 3-STATE OUTPUTS SCAS570H – MARCH 1996 – REVISED JUNE 1999 1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 D Member of the Texas Instruments Widebus ™ Family D EPIC ™ (Enhanced-Performance Implanted CMOS) Submicron Process D B-Port Outputs Have Equivalent 26-Ω Series Resistors, So No External Resistors Are Required D ESD Protection Exceeds 2000 V Per MIL-STD-883, Method 3015; Exceeds 200 V Using Machine Model (C = 200 pF, R = 0) D Latch-Up Performance Exceeds 250 mA Per JESD 17 D Bus Hold on Data Inputs Eliminates the Need for External Pullup/Pulldown Resistors D Package Options Include Thin-Shrink Small-Outline (DGG) and Plastic Shrink Small-Outline (DL) Packages NOTE: For tape and reel order entry: The DGGR package is abbreviated to GR. description This 12-bit to 24-bit multiplexed D-type latch is designed for 1.65-V to 3.6-VCC operation. The SN74ALVCH162260 is used in applications in which two separate data paths must be multiplexed onto, or demultiplexed from, a single data path. Typical applications include multiplexing and/or demultiplexing address and data information in microprocessor or bus-interface applications. This device also is useful in memory-interleaving applications. Three 12-bit I/O ports (A1–A12, 1B1–1B12, and 2B1–2B12) are available for address and/or data transfer. The output-enable (OE1B, OE2B, and OEA) inputs control the bus transceiver functions. The OE1B and OE2B control signals also allow bank control in the A-to-B direction. Address and/or data information can be stored using the internal storage latches. The latch-enable (LE1B, LE2B, LEA1B, and LEA2B) inputs are used to control data storage. When the latch-enable input is high, the latch is transparent. When the latch-enable input goes low, the data present at the inputs is latched and remains latched until the latch-enable input is returned high. The B outputs, which are designed to sink up to 12 mA, include equivalent 26- Ω resistors to reduce overshoot and undershoot. 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. DGG OR DL PACKAGE (TOP VIEW) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 OEA LE1B 2B3 GND 2B2 2B1 VCC A1 A2 A3 GND A4 A5 A6 A7 A8 A9 GND A10 A11 A12 VCC 1B1 1B2 GND 1B3 LE2B SEL OE2B LEA2B 2B4 GND 2B5 2B6 VCC 2B7 2B8 2B9 GND 2B10 2B11 2B12 1B12 1B11 1B10 GND 1B9 1B8 1B7 VCC 1B6 1B5 GND 1B4 LEA1B OE1B EPIC and Widebus are trademarks of 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. Copyright © 1999, Texas Instruments Incorporated 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. |
Nº de peça semelhante - SN74ALVCH162260 |
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Descrição semelhante - SN74ALVCH162260 |
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