HD74LV240A Datasheet, PDF (10/14 Pages) Hitachi Semiconductor – Octal Buffers / Drivers with 3-state Outputs

HD74LV240A
• Waveform – 1
tf
tr
90%
90%
V_CC
Input A
50% V_CC
50% V_CC
10%
10%
0V
t_PLH
t_PHL
Output Y
V_OH
50% V_CC
50% V_CC
V_OL
• Waveform – 2
tf
tr
90%
90%
V_CC
Input OE
50% V_CC
50% V_CC
10%
10%
0V
t_ZL
t_LZ
V_CC
Waveform – A
50% V_CC
t_ZH
V_OL + 0.3 V
t_HZ
V_OL
Waveform – B
50% V_CC
V_OH – 0.3 V
V_OH
0V
Notes: 1. Input waveform: PRR ≤ 1 MHz, Zo = 50 Ω, t_r ≤ 3 ns, t_f ≤ 3 ns
2. Waveform-A is for an output with internal conditions such that the output is low except when disabled
by the output control.
3. Waveform-B is for an output with internal conditions such that the output is high except when disabled
by the output control.
4. The output are measured one at a time with one transition per measurement.
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