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SN74LVTZ245 Arkusz danych(PDF) 1 Page - Texas Instruments |
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SN74LVTZ245 Arkusz danych(HTML) 1 Page - Texas Instruments |
1 / 11 page SN54LVTZ245, SN74LVTZ245 3.3V ABT OCTAL BUS TRANSCEIVERS WITH 3STATE OUTPUTS SCBS303C − DECEMBER 1993 − REVISED JANUARY 1996 1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 D State-of-the-Art Advanced BiCMOS Technology (ABT) Design for 3.3-V Operation and Low-Static Power Dissipation D High-Impedance State During Power Up and Power Down D Support Mixed-Mode Signal Operation (5-V Input and Output Voltages With 3.3-V VCC) D Support Unregulated Battery Operation Down to 2.7 V D Typical VOLP (Output Ground Bounce) < 0.8 V at VCC = 3.3 V, TA = 25°C D Latch-Up Performance Exceeds 500 mA Per JEDEC Standard JESD-17 D Bus-Hold Data Inputs Eliminate the Need for External Pullup/Pulldown Resistors D Package Options Include Plastic Small-Outline (DW), Shrink Small-Outline (DB), and Thin Shrink Small-Outline (PW) Packages, Ceramic Chip Carriers (FK), and Ceramic (J) DIPs description These octal bus transceivers are designed specifically for low-voltage (3.3-V) VCC operation, but with the capability to provide a TTL interface to a 5-V system environment. These devices are designed for asynchronous communication between data buses. They transmit data from the A bus to the B bus or from the B bus to the A bus, depending upon the logic level at the direction-control (DIR) input. The output-enable (OE) input can be used to disable the devices so the buses are effectively isolated. Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level. The SN74LVTZ245 is available in TI’s shrink small-outline package (DB), which provides the same I/O pin count and functionality of standard small-outline packages in less than half the printed-circuit-board area. The SN54LVTZ245 is characterized for operation over the full military temperature range of − 55 °C to 125°C. The SN74LVTZ245 is characterized for operation from − 40 °C to 85°C. FUNCTION TABLE INPUTS OPERATION OE DIR OPERATION L L B data to A bus L H A data to B bus H X Isolation Copyright 1996, 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. 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 DIR A1 A2 A3 A4 A5 A6 A7 A8 GND VCC OE B1 B2 B3 B4 B5 B6 B7 B8 SN54LVTZ245 ...J PACKAGE SN74LVTZ245 . . . DB, DW, OR PW PACKAGE (TOP VIEW) 32 1 20 19 9 10 11 12 13 4 5 6 7 8 18 17 16 15 14 B1 B2 B3 B4 B5 A3 A4 A5 A6 A7 SN54LVTZ245 . . . FK PACKAGE (TOP VIEW) 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. |
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