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74LVT245B Fiches technique(PDF) 7 Page - NXP Semiconductors

No de pièce 74LVT245B
Description  3.3 V octal transceiver with direction pin (3-state)
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Fabricant  PHILIPS [NXP Semiconductors]
Site Internet  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

74LVT245B Fiches technique(HTML) 7 Page - NXP Semiconductors

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74LVT245B_2
© NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 02 — 8 May 2008
7 of 15
NXP Semiconductors
74LVT245B
3.3 V octal transceiver with direction pin (3-state)
[1]
Typical values are measured at Tamb =25 °C and VCC = 3.3 V
11. Waveforms
tPLZ
LOW to OFF-state propagation delay
see Figure 6
VCC = 2.7 V
-
-
5.1
ns
VCC = 3.3 V ± 0.3 V
2.2
3.4
5.0
ns
Table 7.
Dynamic characteristics …continued
Voltages are referenced to GND (ground = 0 V). For test circuit see Figure 7.
Symbol Parameter
Conditions
−40 °C to +85 °C
Unit
Min
Typ[1]
Max
See Table 8 for measurement points.
VOL and VOH are typical output voltage levels that occur with the output load.
Fig 5.
Input (An, Bn) to output (Bn, An) propagation delays and output transition times
001aah732
VM
VM
VM
VM
VI
An, Bn input
GND
VOH
Bn, An output
VOL
tPHL
tPLH
See Table 8 for measurement points.
VOL and VOH are typical output voltage levels that occur with the output load.
Fig 6.
3-state output enable and disable times
001aah733
outputs
enabled
outputs
enabled
outputs
disabled
VM
VM
VY
VM
VX
VI
GND
3.0 V
VOL
VOH
GND
output
HIGH-to-OFF
OFF-to-HIGH
output
LOW-to-OFF
OFF-to-LOW
tPZH
tPHZ
tPZL
tPLZ
OE input


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