HEF4068B 8-input NAND gate

HEF4068B 8-input NAND gate

The HEF4068B provides the 8-input NAND function. The outputs are fully buffered for highest noise immunity and pattern insensitivity of output impedance. HEF4068B gates Fig.2 Pinning diagram. Fig.1 Functional diagram. HEF4068BP(N): 14-lead DIL; plastic (SOT27-1) HEF4068BD(F): 14-lead DIL; cerami.

Features

mb = 25 °C; CL = 50 pF; input transition times ≤ 20 ns VDD V Propagation delays In → O HIGH to LOW 5 10 15 5 LOW to HIGH Output transition times HIGH to LOW 10 15 5 10 15 5 LOW to HIGH 10 15 tTLH tTHL tPLH tPHL 95 40 30 80 35 30 60 30 20 60 30 20 195 85 65 165 70 60 120 60 40 120 60 40 ns ns ns ns ns ns ns ns ns ns ns ns SYMBOL TYP. MAX. HEF4068B gates TYPICAL EXTRAPOLATION FORMULA 68 ns + (0,55 ns/pF) CL 29 ns + (0,23 ns/pF) CL 22 ns + (0,16 ns/pF) CL 53 ns + (0,55 ns/pF) CL 24 ns + (0,23 ns/pF) CL 22 ns + (0,16 ns/pF) CL 10 ns + (1,0 ns/pF) CL 9 ns + (0,42 ns/pF) CL 6 ns + (0,28 ns/pF) CL .