74LVC244A 데이터 시트보기 (PDF) - Nexperia B.V. All rights reserved
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74LVC244A Datasheet PDF : 16 Pages
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Nexperia
74LVC244A; 74LVCH244A
Octal buffer/line driver; 3-state
10.1. Waveforms and test circuit
VI
nAn input
VM
VM
GND
VOH
tPLH
tPHL
Fig. 6.
nYn output
VM
VM
VOL
mna171
Measurement points are given in Table 8.
Logic levels: VOL and VOH are typical output voltage levels that occur with the output load.
The input (nAn) to output (nYn) propagation delays
Fig. 7.
VI
nOE input
VM
GND
VCC
output
LOW-to-OFF
OFF-to-LOW
VOL
VOH
output
HIGH-to-OFF
OFF-to-HIGH
GND
tPLZ
tPZL
tPHZ
VX
VY
VM
tPZH
VM
outputs
enabled
outputs
disabled
outputs
enabled
mna362
Measurement points are given in Table 8.
Logic levels: VOL and VOH are typical output voltage levels that occur with the output load.
3-state enable and disable times
Table 8. Measurement points
Supply voltage Input
VCC
VI
1.2 V
VCC
1.65 V to 1.95 V VCC
2.3 V to 2.7 V
VCC
2.7 V
2.7 V
3.0 V to 3.6 V
2.7 V
VM
0.5 × VCC
0.5 × VCC
0.5 × VCC
1.5 V
1.5 V
Output
VM
0.5 × VCC
0.5 × VCC
0.5 × VCC
1.5 V
1.5 V
VX
VOL + 0.15 V
VOL + 0.15 V
VOL + 0.15 V
VOL + 0.3 V
VOL + 0.3 V
VY
VOH - 0.15 V
VOH - 0.15 V
VOH - 0.15 V
VOH - 0.3 V
VOH - 0.3 V
74LVC_LVCH244A
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 10 — 8 April 2020
© Nexperia B.V. 2020. All rights reserved
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