74LVC245A Просмотр технического описания (PDF) - NXP Semiconductors.
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74LVC245A Datasheet PDF : 18 Pages
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11. AC waveforms
74LVC245A; 74LVCH245A
Octal bus transceiver; 3-state
VI
An, Bn input
GND
VOH
tPLH
Bn, An output
VOL
VM
VM
VM
tPHL
VM
mna176
Fig 5.
See Table 8 for measurement points
VOL and VOH are typical output voltage levels that occur with the output load.
Input (An, Bn) to output (Bn, An) propagation delays and output transition times
VI
OE input
GND
VCC
output
LOW-to-OFF
OFF-to-LOW
VOL
VOH
output
HIGH-to-OFF
OFF-to-HIGH
GND
VM
t PLZ
t PZL
t PHZ
VX
VY
VM
t PZH
VM
outputs
enabled
outputs
disabled
outputs
enabled
mna367
Fig 6.
See Table 8 for measurement points
VOL and VOH are typical output voltage levels that occur with the output load.
Enable and disable times
Table 8. Measurement points
Supply voltage
VCC
1.2 V
1.65 V to 1.95 V
2.3 V to 2.7 V
2.7 V
VM
0.5 VCC
0.5 VCC
0.5 VCC
1.5 V
3.0 V to 3.6 V
1.5 V
Input
VI
VCC
VCC
VCC
2.7 V
2.7 V
tr = tf
2.5 ns
2.5 ns
2.5 ns
2.5 ns
2.5 ns
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_LVCH245A
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 8 — 28 June 2013
© Nexperia B.V. 2017. All rights reserved
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