74LV245DB View Datasheet(PDF) - NXP Semiconductors.
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74LV245DB Datasheet PDF : 15 Pages
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NXP Semiconductors
11. Waveforms
74LV245
Octal bus transceiver; 3-state
VI
An, Bn input
GND
VOH
tPLH
Bn, An output
VOL
VM
VM
VM
tPHL
VM
mna176
Fig 5.
Measurement points are given in Table 8.
VOL and VOH are typical voltage output levels that occur with the output load.
The input (An, Bn) to output (Bn, An) propagation delays
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.
Measurement points are given in Table 8.
VOL and VOH are typical voltage output levels that occur with the output load.
Enable and disable times
Table 8. Measurement points
Supply voltage
Input
VCC
< 2.7 V
2.7 V to 3.6 V
VM
0.5VCC
1.5 V
≥ 4.5 V
0.5VCC
Output
VM
0.5VCC
1.5 V
0.5VCC
VX
VOL + 0.1VCC
VOL + 0.3 V
VOL + 0.1VCC
VY
VOH − 0.1VCC
VOH − 0.3 V
VOH − 0.1VCC
74LV245_3
Product data sheet
Rev. 03 — 15 April 2009
© NXP B.V. 2009. All rights reserved.
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