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5409 DM7409 Quad 2-Input AND Gates with Open-Collector Outputs
June 1989
5409 DM7409 Quad 2-Input AND Gates
with Open-Collector Outputs
General Description Pull-Up Resistor Equations
This device contains four independent gates each of which VCC (Min) b VOH
performs the logic AND function The open-collector out- RMAX e
N1 (IOH) a N2 (IIH)
puts require external pull-up resistors for proper logical op-
eration VCC (Max) b VOL
RMIN e
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
TL F 6499