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74240

Fairchild Semiconductor
Part Number 74240
Manufacturer Fairchild Semiconductor
Description Octal 3-STATE Buffer/Line Driver/Line Receiver
Published Apr 3, 2005
Detailed Description DM74LS240 • DM74LS241 Octal 3-STATE Buffer/Line Driver/Line Receiver August 1986 Revised March 2000 DM74LS240 • DM74LS...
Datasheet PDF File 74240 PDF File

74240
74240

Overview
DM74LS240 • DM74LS241 Octal 3-STATE Buffer/Line Driver/Line Receiver August 1986 Revised March 2000 DM74LS240 • DM74LS241 Octal 3-STATE Buffer/Line Driver/Line Receiver General Description These buffers/line drivers are designed to improve both the performance and PC board density of 3-STATE buffers/ drivers employed as memory-address drivers, clock drivers, and bus-oriented transmitters/receivers.
Featuring 400 mV of hysteresis at each low current PNP data line input, they provide improved noise rejection and high fanout outputs and can be used to drive terminated lines down to 133Ω.
Features s 3-STATE outputs drive bus lines directly s PNP inputs reduce DC loading on bus lines s Hysteresis at data inputs improves noise margins s Typical IOL (sink current) 24 mA s Typical IOH (source current) −15 mA s Typical propagation delay times Inverting Noninverting 10.
5 ns 12 ns s Typical enable/disable time 18 ns s Typical power dissipation (enabled) Inverting Noninverting 130 mW 135 mW Ordering Code: Order Number DM74LS240WM DM74LS240SJ DM74LS240N DM74LS241WM DM74LS241N Package Number M20B M20D N20A M20B N20A Package Description 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.
300 Wide 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.
3mm Wide 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.
300 Wide 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.
300 Wide 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.
300 Wide Devices also available in Tape and Reel.
Specify by appending the suffix letter “X” to the ordering code.
Connection Diagrams DM74LS240 DM74LS241 © 2000 Fairchild Semiconductor Corporation DS006411 www.
fairchildsemi.
com DM74LS240 • DM74LS241 Function Tables DM74LS240 Inputs G L L H A L H X Output Y H L Z G X X X H H L L = LOW Logic Level H = HIGH Logic Level X = Either LOW or HIGH Logic Level Z = High Impedance DM74LS241 Inputs G L L H X X X 1A L H X X X X 2A X X X L H X Outputs 1Y L H Z L ...


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