DM7407

DM5407 DM7407 Hex Buffers with High Voltage Open-Collector Outputs June 1989 DM5407 DM7407 Hex Buffers with High Voltage Open-Collector Outputs General Description This device contains six independent gates each of which performs a buffer function The open-collector outputs require external pull-up resistors for proper logical operation Pull-Up Resistor Equations RMAX e VO (Min) b VOH N1 (IOH) a N2 (IIH) RMIN e VO (Max) b VOL IOL b N3 (IIL) Where N1 (IOH) e total maximum output high current for all outputs tied to pull-up resistor N2 (IIH) e total maximum input high current for all inputs tied to pull-up resistor N3 (IIL) e total maximum input low current for all inputs tied to pull-up resistor Connection Diagram Dual-In-Line Package Order Number DM5407J DM5407W DM7407M or DM7407N See NS Package Number J14A M14A N14A or W14B TL F 6497 – 1 Function Table YeA Input Output AY LL HH H e High Logic Level L e Low Logic Level C1995 National Semiconductor Corporation...