74LCXH245 Datasheet, PDF (5/10 Pages) Fairchild Semiconductor – Low Voltage Bidirectional Transceiver with Bushold

AC LOADING and WAVEFORMS Generic for LCX Family
FIGURE 1. AC Test Circuit (C_L includes probe and jig capacitance)
Test
t_PLH, t_PHL
t_PZL, t_PLZ
t_PZH, t_PHZ
Switch
Open
6V at V_CC = 3.3 ± 0.3V; and 2.7V
V_CC x 2 at V_CC = 2.5 ± 0.2V
GND
Waveform for Inverting and Non-Inverting Functions
3-STATE Output High Enable and
Disable Times for Logic
Propagation Delay. Pulse Width and t_rec Waveforms
Setup Time, Hold Time and Recovery Time for Logic
3-STATE Output Low Enable and
Disable Times for Logic
t_rise and t_fall
FIGURE 2. Waveforms
(Input Characteristics; f =1MHz, t_r = t_f = 3ns)
Symbol
V_mi
V_mo
V_x
V_y
3.3V ± 0.3V
1.5V
1.5V
V_OL + 0.3V
V_OH − 0.3V
V_CC
2.7V
1.5V
1.5V
V_OL + 0.3V
V_OH − 0.3V
2.5V ± 0.2V
V_CC/2
V_CC/2
V_OL + 0.15V
V_OH − 0.15V
5
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