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DM74ALS241A bảng dữ liệu(PDF) 1 Page - Fairchild Semiconductor |
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DM74ALS241A bảng dữ liệu(HTML) 1 Page - Fairchild Semiconductor |
1 / 9 page tm September 2007 ©1986 Fairchild Semiconductor Corporation www.fairchildsemi.com DM74ALS240A, DM74ALS241A Rev. 1.3 DM74ALS240A, DM74ALS241A Octal 3-STATE Bus Driver Features ■ Advanced low power oxide-isolated ion-implanted Schottky TTL process ■ Functional and pin compatible with the DM74LS counterpart ■ Improved switching performance with less power dissipation compared with the DM74LS counterpart ■ Switching response specified into 500 Ω and 50pF load ■ Switching response specifications guaranteed over full temperature and VCC supply range ■ PNP input design reduces input loading ■ Low level drive current: 74ALS = 24mA 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 communi- cation systems. The output 3-STATE gating control is organized into two separate groups of four buffers. The DM74ALS240A control inputs symmetrically enable the respective outputs when set logic LOW, while the DM74ALS241A has complementary 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 elimi- nates bus glitching problems that arise during power-up and power-down. Ordering Information Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Connection Diagram 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 |
Số phần tương tự - DM74ALS241A |
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Mô tả tương tự - DM74ALS241A |
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