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SN74ABT16283A bảng dữ liệu(PDF) 1 Page - Texas Instruments |
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1 / 10 page SN54ABT162823A, SN74ABT162823A 18BIT BUSINTERFACE FLIPFLOPS WITH 3STATE OUTPUTS SCBS666B − JULY 1996 − REVISED JUNE 2004 1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 D Members of the Texas Instruments Widebus Family D Output Ports Have Equivalent 25-Ω Series Resistors So No External Resistors Are Required 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 Ioff and Power-Up 3-State Support Hot Insertion D Distributed VCC and GND Pins Minimize High-Speed Switching Noise D Flow-Through Architecture Optimizes PCB Layout description/ordering information These 18-bit bus-interface flip-flops feature 3-state outputs designed specifically for driving highly capacitive or relatively low-impedance loads. They are particularly suitable for implementing wider buffer registers, I/O ports, bidirectional bus drivers with parity, and working registers. The ’ABT162823A devices can be used as two 9-bit flip-flops or one 18-bit flip-flop. With the clock-enable (CLKEN) input low, the D-type flip-flops enter data on the low-to-high transitions of the clock. Taking CLKEN high disables the clock buffer, thus latching the outputs. Taking the clear (CLR) input low causes the Q outputs to go low independently of the clock. ORDERING INFORMATION TA PACKAGE† ORDERABLE PART NUMBER TOP-SIDE MARKING SSOP − DL Tube SN74ABT162823ADL ABT162823A −40 °C to 85°C SSOP − DL Tape and reel SN74ABT162823ADLR ABT162823A −40 C to 85 C TSSOP − DGG Tape and reel SN74ABT162823ADGGR ABT162823A −55 °C to 125°C CFP − WD Tube SNJ54ABT162823AWD SNJ54ABT162823AWD † Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package. Copyright 2004, 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 is a trademark of Texas Instruments. SN54ABT162823A . . . WD PACKAGE SN74ABT162823A . . . 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 1CLR 1OE 1Q1 GND 1Q2 1Q3 VCC 1Q4 1Q5 1Q6 GND 1Q7 1Q8 1Q9 2Q1 2Q2 2Q3 GND 2Q4 2Q5 2Q6 VCC 2Q7 2Q8 GND 2Q9 2OE 2CLR 1CLK 1CLKEN 1D1 GND 1D2 1D3 VCC 1D4 1D5 1D6 GND 1D7 1D8 1D9 2D1 2D2 2D3 GND 2D4 2D5 2D6 VCC 2D7 2D8 GND 2D9 2CLKEN 2CLK |
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