SN74F38

SN54F38, SN74F38 QUADRUPLE 2ĆINPUT POSITIVEĆNAND BUFFERS WITH OPENĆCOLLECTOR OUTPUTS SDFS013A − MARCH 1987 − REVISED OCTOBER 1993 Package Options Include Plastic Small-Outline Packages, Ceramic Chip Carriers, and Standard Plastic and Ceramic 300-mil DIPs description These devices contain four independent 2-input NAND buffer gates with open-collector outputs. They perform the Boolean functions Y = A B or Y = A + B in positive logic. SN54F38 . . . J PACKAGE SN74F38 . . . D OR N PACKAGE (TOP VIEW) 1A 1 1B 2 1Y 3 2A 4 2B 5 2Y 6 GND 7 14 VCC 13 4B 12 4A 11 4Y 10 3B 9 3A 8 3Y The open-collector outputs require pullup resistors to perform correctly. They may be connected to other open-collector outputs to implement active-low wired-OR or active-high wired-AND functions. Open-collector devices are often used to generate higher VOH levels. The SN54F38 is characterized for operation over the full military temperature range of − 55°C to 125°C. The SN74F38 is characterized for operation from 0°C to 70°C. FUNCTION TABLE (each gate) SN54F38 . . . FK PACKAGE (TOP VIEW) 4B VCC NC 1A 1B 1Y 3 2 1 20 19 4 18 4A NC 5 17 NC 2A 6 16 4Y NC 7 15 NC 2B 8 14 3B 9 10 11 12 13 3A 3Y NC GND 2Y INPUTS A B H H L X X L OUTPUT Y L H H NC − No internal connection logic symbol† 1 1A & 2 1B 4 2A 5 2B 9 3A 10 3B 12 4A 13 4B 3 1Y 6 2Y 8 3Y 11 4Y † This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. Pin numbers shown a...