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74ACT11590 Folha de dados(PDF) 1 Page - Texas Instruments |
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74ACT11590 Folha de dados(HTML) 1 Page - Texas Instruments |
1 / 15 page 74ACT11590 8BIT BINARY COUNTER WITH REGISTERED 3STATE OUTPUTS SCAS195 − D3989, MARCH 1992 − REVISED APRIL 1993 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77001 Copyright 1993, Texas Instruments Incorporated 2−1 • Inputs Are TTL-Voltage Compatible • Parallel Registered Outputs • Internal Counters Have Direct Clear • Flow-Through Architecture Optimizes PCB Layout • Center-Pin V CC and GND Configurations Minimize High-Speed Switching Noise • EPIC (Enhanced-Performance Implanted CMOS) 1- µm Process • 500-mA Typical Latch-Up Immunity at 125°C • Package Options Include Plastic Small-Outline Packages and Standard Plastic 300-mil DIPs description The 74ACT11590 contains an 8-bit binary counter that feeds an 8-bit storage register. The storage register has parallel outputs. Separate clocks are provided for both the binary counter and storage register. The binary counter features a direct clear (CCLR) input and a count-enable (CCKEN) input. For cascading, a ripple-carry (RCO) output is provided. Expansion is easily accomplished for two stages by connecting RCO of the first stage to CCKEN of the second stage. Cascading for larger count chains can be accomplished by connecting RCO of each stage to CCK of the following stage. Both the register and the counter have individual positive-edge-triggered clocks. If both clocks are connected together, the counter state is always one count ahead of the register. Internal circuitry prevents clocking from the clock enable. The 74ACT11590 is characterized for operation from − 40 °C to 85°C. logic symbol† CTR8 C2 13 RCK 12 4 EN3 14 1+ 19 CCK G1 18 CT = 0 17 CCLR CCKEN OE RCO 2D 20 1 2 3 8 9 10 11 3 QA QB QC QD QE QF QG QH (CT = 255) Z4 † This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. 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. EPIC is a trademark of Texas Instruments Incorporated. 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 QB QC QD GND GND GND GND QE QF QG QA CCK CCKEN CCLR VCC VCC OE RCK RCO QH DW OR N PACKAGE (TOP VIEW) |
Nº de peça semelhante - 74ACT11590 |
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Descrição semelhante - 74ACT11590 |
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