
6
PS8729F
10/11/08
PI74STX2G4245
2-Bit Level Shifting Buffer/Transceiver with
Congurable Dual Supply Voltage
AC Loading and Waveforms
Figure 1. AC Test Circuit
Figure 2. ICCD Test Circuit
Figure 3. AC Waveforms
CL includes load and stray capacitance
Input PRR = 1.0 MHz; tW = 500ns
Input
RL
CL
VDDA/B
Output
Input = AC Waveform; tr = tf = 1.8ns;
PRR = 10 MHz; Duty Cycle = 50%
Input
Output
VDD
A
VOH
GND
Input
Output
tW
tPHL
tR = 3ns
tf = 3ns
tPLH
VOL
50%
90%
10%
VDD
VDDA/B
CL
RL
1.8 ± 0.15V
15pF
1KΩ
2.5V ± 0.2V
15pF
500Ω
3.0V to 3.6V
30pF
500Ω
5V ± 0.5V
50pF
500Ω
08-0291