HD74HCT237 Datasheet, PDF (5/8 Pages) Hitachi Semiconductor – 3-to-8-line Decoder/Demultiplexer with Address Latch

HD74HCT237
Waveforms
• Waveform – 1
6 ns
6 ns
Input
A,B,C
90%
10%
90%
1.3 V
10%
tW
90% 90%
1.3 V
10% 10%
tW
t_PLH
t_PHL
Output Y
10%
90%
1.3 V
90%
1.3 V
10%
t_TLH
t_THL
1.3 V
V_CC
0V
V_OH
V_OL
Notes: 1. Input waveform: PRR ≤ 1 MHz, Zo = 50 Ω, t_r ≤ 6 ns, t_f ≤ 6 ns
2. The output are measured one at a time with one transition per measurement.
• Waveform – 2
6 ns
G2
90%
1.3 V
10%
6 ns
10%
90%
1.3 V
Output Y
tPLH
1.3 V
10%
90%
t_TLH
tPHL
90%
1.3 V
10%
t_THL
V_CC
0V
V_OH
V_OL
Notes: 1. Input waveform: PRR ≤ 1 MHz, Zo = 50 Ω, t_r ≤ 6 ns, t_f ≤ 6 ns
2. The output are measured one at a time with one transition per measurement.
• Waveform – 3
6 ns
G1
90%
1.3 V
10%
6 ns
90%
1.3 V
10%
Output Y
t_PLH
1.3 V
10%
90%
t_TLH
t_PHL
90%
1.3 V
10%
t_THL
V_CC
0V
V_OH
V_OL
Notes: 1. Input waveform: PRR ≤ 1 MHz, Zo = 50 Ω, t_r ≤ 6 ns, t_f ≤ 6 ns
2. The output are measured one at a time with one transition per measurement.
Rev.2.00 Mar 30, 2006 page 5 of 7