74LVT245B 查看數據表（PDF） - NXP Semiconductors.
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74LVT245B Datasheet PDF : 15 Pages
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Nexperia
74LVT245B
3.3 V octal transceiver with direction pin (3-state)
Table 7. Dynamic characteristics …continued
Voltages are referenced to GND (ground = 0 V). For test circuit see Figure 7.
Symbol Parameter
Conditions
tPLZ
LOW to OFF-state propagation delay see Figure 6
VCC = 2.7 V
VCC = 3.3 V ± 0.3 V
[1] Typical values are measured at Tamb = 25 °C and VCC = 3.3 V
11. Waveforms
−40 °C to +85 °C
Unit
Min Typ[1] Max
-
-
5.1 ns
2.2
3.4
5.0 ns
VI
An, Bn input
GND
VOH
Bn, An output
VOL
VM
tPHL
VM
VM
tPLH
VM
001aah732
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
3.0 V
output
LOW-to-OFF
OFF-to-LOW
VOL
output
VOH
HIGH-to-OFF
OFF-to-HIGH
GND
VM
tPLZ
tPZL
tPHZ
VX
VY
outputs
enabled
VM
tPZH
outputs
disabled
VM
outputs
enabled
001aah733
Fig 6.
See Table 8 for measurement points.
VOL and VOH are typical output voltage levels that occur with the output load.
3-state output enable and disable times
74LVT245B_2
Product data sheet
Rev. 02 — 8 May 2008
© Nexperia B.V. 2017. All rights reserved
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