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DM74AS574N Fiches technique(PDF) 1 Page - Fairchild Semiconductor |
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DM74AS574N Fiches technique(HTML) 1 Page - Fairchild Semiconductor |
1 / 6 page © 2000 Fairchild Semiconductor Corporation DS006314 www.fairchildsemi.com October 1986 Revised March 2000 DM74AS574 Octal D-Type Edge-Triggered Flip-Flops with 3-STATE Outputs General Description These 8-bit registers feature totem-pole 3-STATE outputs designed specifically for driving highly-capacitive or rela- tively low-impedance loads. The high-impedance state and increased HIGH-logic-level drive provide these registers with the capability of being connected directly to and driv- ing the bus lines in a bus-organized system without need for interface or pull-up components. They are particularly attractive for implementing buffer registers, I/O ports, bidi- rectional bus drivers, and working registers. The eight flip-flops of the DM74AS574 are edge-triggered D-type flip-flops. On the positive transition of the clock, the Q outputs will be set to the logic states that were set up at the D inputs. A buffered output control input can be used to place the eight outputs in either a normal logic state (HIGH or LOW logic levels) or a high impedance state. In the high-imped- ance state the outputs neither load nor drive the bus lines significantly. The output control does not affect the internal operation of the flip-flops. That is, the old data can be retained or new data can be entered even while the outputs are OFF. The pinout is arranged to ease printed circuit board layout. All data inputs are on one side of the package while all the outputs are on the other side. Features s Switching specifications at 50 pF s Switching specifications guaranteed over full tempera- ture and VCC range s Advanced oxide-isolated, ion-implanted Schottky TTL process s Functionally equivalent with DM74S374 s Improved AC performance over DM74S374 at approxi- mately half the power s 3-STATE buffer-type outputs drive bus lines directly s Bus structured pinout Ordering Code: Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Connection Diagram Order Number Package Number Package Description DM74AS574WM M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide DM74AS574N N20A 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide |
Numéro de pièce similaire - DM74AS574N |
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Description similaire - DM74AS574N |
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