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SN74ALVCHG162282DBB Datasheet(PDF) 1 Page - Texas Instruments |
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SN74ALVCHG162282DBB Datasheet(HTML) 1 Page - Texas Instruments |
1 / 8 page SN74ALVCHG162282 18-BIT TO 36-BIT REGISTERED BUS EXCHANGER WITH 3-STATE OUTPUTS SCES094C – FEBRUARY 1997 – 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) Sub-Micron Process D A-Port Outputs Have Equivalent 50-Ω Series Resistors and B-Port Outputs Have Equivalent 20- 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 Packaged in Thin Very Small-Outline Package NOTE: For order entry: The DBB package is abbreviated to G. For tape and reel: The DBBR package is abbreviated to GR. description The SN74ALVCHG162282 is an 18-bit to 36-bit registered bus exchanger. This device is intended for use in applications where data must be transferred from a narrow high-speed bus to a wide lower-frequency bus. It is designed specifically for low-voltage (3.3-V) VCC operation. The device provides synchronous data exchange between the two ports. Data is stored in the internal registers on the low-to-high transition of the clock (CLK) input. For data transfer in the B-to-A direction, the select (SEL) input selects 1B or 2B data for the A outputs. For data transfer in the A-to-B direction, a two-stage pipeline is provided in the 1B path, with a single storage register in the 2B path. Data flow is controlled by the active-low output-enable (OE) and direction-control (DIR) input. DIR is registered to synchronize the bus direction changes with the clock. Copyright © 1999, 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. Widebus and EPIC are trademarks of Texas Instruments Incorporated. 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 29 30 31 32 33 34 35 36 37 38 39 40 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 VCC GND 2B9 1B9 2B8 GND 1B8 2B7 1B7 VCC 2B6 1B6 2B5 1B5 GND 2B4 1B4 2B3 1B3 VCC GND 2B2 1B2 2B1 1B1 VCC A1 A2 A3 GND A4 A5 A6 VCC A7 A8 A9 GND CLK SEL VCC GND 1B10 2B10 1B11 GND 2B11 1B12 2B12 VCC 1B13 2B13 1B14 2B14 GND 1B15 2B15 1B16 2B16 VCC GND 1B17 2B17 1B18 2B18 VCC A18 A17 A16 GND A15 A14 A13 VCC A12 A11 A10 GND OE DIR DBB PACKAGE (TOP VIEW) |
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