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SN74ABTH25245DW 数据表(PDF) 1 Page - Texas Instruments |
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SN74ABTH25245DW 数据表(HTML) 1 Page - Texas Instruments |
1 / 8 page SN54ABTH25245, SN74ABTH25245 25- Ω OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SCBS251F – JUNE 1992 – REVISED MAY 1997 1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 D State-of-the-Art EPIC-ΙΙB™ BiCMOS Design Significantly Reduces Power Dissipation 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 500 mA Per JEDEC Standard JESD-17 D Typical VOLP (Output Ground Bounce) < 1 V at VCC = 5 V, TA = 25°C D High-Impedance State During Power Up and Power Down D Designed to Facilitate Incident-Wave Switching for Line Impedances of 25 Ω or Greater D Distributed VCC and GND Pin Configuration Minimizes High-Speed Switching Noise D Bus Hold on Data Inputs Eliminates the Need for External Pullup/Pulldown Resistors D Package Options Include Plastic Small-Outline (DW) Package, Ceramic Chip Carriers (FK), and Standard Plastic (NT) and Ceramic (JT) DIPs description The ’ABTH25245 are 25- Ω octal bus transceivers designed for asynchronous communication between data buses. They improve both the performance and density of 3-state memory address drivers, clock drivers, and bus-oriented transceivers. These devices allow noninverted data transmission from the A bus to the B bus or from the B bus to the A bus, depending on the logic level at the direction-control (DIR) input. The output-enable (OE) input can disable the device so that both buses are effectively isolated. When OE is low, the device is active. These transceivers are capable of sinking 188 mA of IOL current, which facilitates switching 25-Ω transmission lines on the incident wave. The distributed VCC and GND pins minimize switching noise for more-reliable system operation. Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level. Copyright © 1997, Texas Instruments Incorporated UNLESS OTHERWISE NOTED this document contains PRODUCTION DATA information 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. EPIC- ΙΙB is a trademark of Texas Instruments Incorporated. 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 A1 GND A2 A3 GND A4 A5 GND A6 A7 GND A8 DIR B1 B2 VCC B3 B4 B5 B6 VCC B7 B8 OE SN54ABTH25245 . . . JT PACKAGE SN74ABTH25245 . . . DW OR NT PACKAGE (TOP VIEW) 32 1 28 27 12 13 5 6 7 8 9 10 11 25 24 23 22 21 20 19 OE A8 GND NC A7 A6 GND B3 VCC B2 NC B1 DIR A1 426 14 15 16 17 18 SN54ABTH25245 . . . FK PACKAGE (TOP VIEW) NC – No internal connection |
类似零件编号 - SN74ABTH25245DW |
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类似说明 - SN74ABTH25245DW |
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