74HC158 Datasheet, PDF (6/6 Pages) NXP Semiconductors – Quad 2-input multiplexer; inverting

CD74HC157, CD74HCT157, CD74HC158, CD74HCT158
Test Circuits and Waveforms
t_r = 6ns
INPUT
90%
50%
10%
t_f = 6ns
V_CC
GND
t_THL
INVERTING
OUTPUT
t_PHL
t_TLH
90%
50%
10%
t_PLH
FIGURE 1. HC AND HCU TRANSITION TIMES AND PROPAGA-
TION DELAY TIMES, COMBINATION LOGIC
t_r = 6ns
INPUT
t_THL
2.7V
1.3V
0.3V
INVERTING
OUTPUT
t_PHL
t_f = 6ns
3V
GND
t_TLH
90%
1.3V
10%
t_PLH
FIGURE 2. HCT TRANSITION TIMES AND PROPAGATION
DELAY TIMES, COMBINATION LOGIC
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