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SN74ABTE16246 데이터시트(PDF) 1 Page - Texas Instruments |
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SN74ABTE16246 데이터시트(HTML) 1 Page - Texas Instruments |
1 / 10 page SN54ABTE16246, SN74ABTE16246 11-BIT INCIDENT-WAVE SWITCHING BUS TRANSCEIVERS WITH 3-STATE AND OPEN-COLLECTOR OUTPUTS SCBS227F – JULY 1993 – REVISED JUNE 1999 1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 D Members of the Texas Instruments Widebus ™ Family D State-of-the-Art EPIC-ΙΙB™ BiCMOS Design Significantly Reduces Power Dissipation D Support the VME64 ETL Specification D Reduced TTL-Compatible Input Threshold Range D High-Drive Outputs (IOH = –60 mA IOL = 90 mA) Support Equivalent 25-Ω Incident-Wave Switching D VCCBIAS Pin Minimizes Signal Distortion During Live Insertion D Internal Pullup Resistor on OE Keeps Outputs in High-Impedance State During Power Up or Power Down D Distributed VCC and GND Pin Configuration Minimizes High-Speed Switching Noise D Equivalent 25-Ω Series Damping Resistor on B Port D Bus Hold on Data Inputs Eliminates the Need for External Pullup/Pulldown Resistors D Package Options Include Plastic Shrink Small-Outline (DL) and Thin-Shrink Small-Outline (DGG) Packages and 380-mil Fine-Pitch Ceramic Flat (WD) Package Using 25-mil Center-to-Center Spacings description The ’ABTE16246 devices are 11-bit noninverting transceivers designed for asynchronous two-way communication between buses. These devices have open-collector and 3-state outputs. They allow 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 be used to disable the device so that the buses are effectively isolated. When OE is low, the device is active. The B port has an equivalent 25- Ω series output resistor to reduce ringing. Active bus-hold inputs on the B port hold unused or floating inputs at a valid logic level. The A port provides for the precharging of the outputs via VCCBIAS, which establishes a voltage between 1.3 V and 1.7 V when VCC is not connected. The SN54ABTE16246 is characterized for operation over the full military temperature range of –55 °C to 125°C. The SN74ABTE16246 is characterized for operation from –40 °C to 85°C. Copyright © 1999, 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. Widebus and EPIC ΙΙ-B are trademarks of Texas Instruments Incorporated. SN54ABTE16246 . . . WD PACKAGE SN74ABTE16246 . . . 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 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 11OE 11DIR 11B GND 10B 9B VCC 8BI 8BO GND 7BO 6BI 6BO 5BO GND 4BO 4BI VCC 3BO 2BI GND 2BO 1BO 1BI VCCBIAS 11A 10DIR GND 10A 9A VCC 9DIR 8A GND 7A 7BI 6A 5A GND 5BI 4A VCC 3A 3BI GND 2A 1A OE |
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