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DM74ALS240A Datasheet(PDF) 1 Page - Fairchild Semiconductor |
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DM74ALS240A Datasheet(HTML) 1 Page - Fairchild Semiconductor |
1 / 7 page © 2000 Fairchild Semiconductor Corporation DS006210 www.fairchildsemi.com September 1986 Revised February 2000 DM74ALS240A • DM74ALS241A Octal 3-STATE Bus Driver General Description These octal 3-STATE bus drivers are designed to provide the designer with flexibility in implementing a bus interface with memory, microprocessor, or communication systems. The output 3-STATE gating control is organized into two separate groups of four buffers. The DM74ALS240A con- trol inputs symmetrically enable the respective outputs when set logic LOW, while the DM74ALS241A has comple- mentary enable gating. The 3-STATE circuitry contains a feature that maintains the buffer outputs in 3-STATE (high impedance state) during power supply ramp-up or ramp- down. This eliminates bus glitching problems that arise during power-up and power-down. Features s Advanced low power oxide-isolated ion-implanted Schottky TTL process s Functional and pin compatible with the DM74LS coun- terpart s Improved switching performance with less power dissi- pation compared with the DM74LS counterpart s Switching response specified into 500 Ω and 50 pF load s Switching response specifications guaranteed over full temperature and VCC supply range s PNP input design reduces input loading s Low level drive current: 74ALS = 24 mA Ordering Code: Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Connection Diagrams DM74ALS240A DM74ALS241A Order Number Package Number Package Description DM74ALS240AWM M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide DM74ALS240ASJ M20D 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide DM74ALS240AN N20A 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide DM74ALS241AWM M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide DM74ALS241AN N20A 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide |
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