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| 74HC240-Q100 Datasheet, PDF (8/16 Pages) NXP Semiconductors – Octal buffer/line driver; 3-state; inverting | |||
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NXP Semiconductors
11. Waveforms
74HC240-Q100; 74HCT240-Q100
Octal buffer/line driver; 3-state; inverting
VI
nAn input
GND
VOH
nYn output
VOL
VM
tPHL
90 %
VM
10 %
tTHL
VM
tPLH
VM
10 %
90 %
tTLH
mgu781
Fig 6.
Measurement points are given in Table 8.
VOL and VOH are typical voltage output levels that occur with the output load.
Input (nAn) to output (nYn) propagation delays and output transition times
VI
nOE input
GND
VCC
nYn output
LOW- to - OFF
OFF- to - LOW
VOL
VOH
nYn output
HIGH- to - OFF
OFF- to - HIGH
GND
VM
t PLZ
t PZL
t PHZ
VX
VY
outputs
enabled
VM
t PZH
VM
outputs
disabled
outputs
enabled
001aae014
Fig 7.
Measurement points are given in Table 8.
VOL and VOH are typical voltage output levels that occur with the output load.
3-state enable and disable times
Table 8. Measurement points
Type
Input
74HC240-Q100
74HCT240-Q100
VM
0.5 ï´ VCC
1.3 V
Output
VM
0.5 ï´ VCC
1.3 V
VX
0.1 ï´ VCC
0.1 ï´ VCC
VY
0.9 ï´ VCC
0.9 ï´ VCC
74HC_HCT240_Q100
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 1 â 30 July 2012
© NXP B.V. 2012. All rights reserved.
8 of 16
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