74ACT11240

D Inputs Are TTL-Voltage Compatible D Flow-Through Architecture Optimizes PCB Layout D Center-Pin VCC and GND Configurations Minimize High-Speed Switching Noise D EPICt (Enhanced-Performance Implanted CMOS) 1-mm Process D 500-mA Typical Latch-Up Immunity at 125°C D Package Options Include Plastic Small-Outline (DW) and Shrink Small-Outline (DB) Packages, and Standard Plastic 300-mil DIPs (NT) description 74ACT11240 OCTAL BUFFER/LINE DRIVER WITH 3-STATE OUTPUTS SCAS210A − MAY 1987 − REVISED APRIL 1996 DB, DW, OR NT PACKAGE (TOP VIEW) 1Y1 1 1Y2 2 1Y3 3 1Y4 4 GND 5 GND 6 GND 7 GND 8 2Y1 9 2Y2 10 2Y3 11 2Y4 12 24 1OE 23 1A1 22 1A2 21 1A3 20 1A4 19 VCC 18 VCC 17 2A1 16 2A2 15 2A3 14 2A4 13 2OE This octal buffer or line driver is designed specifically to improve both the performance and density of 3-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters. This device provides inverting outputs and symmetrical active-low output-enable (OE) inputs. This device features high fan-out and improved fan-in. The 74ACT11240 is characterized for operation from −40°C to 85°C. FUNCTION TABLE (each buffer) INPUTS OE A OUTPUT Y L H L L L H H X Z logic symbol† 24 1OE 23 1A1 22 1A2 21 1A3 20 1A4 EN 1 1 1Y1 2 1Y2 3 1Y3 4 1Y4 13 2OE 17 2A1 16 2A2 15 2A3 14 2A4 EN 1 9 2Y1 10 2Y2 11 2Y3 12 2Y4 † This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. Please be aware that an important notice concerning availability, ...