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74LVT_LVTH244A_15 Datenblatt(Datasheet) 7 Page - NXP Semiconductors

Teile-Nr. 74LVT_LVTH244A_15
Beschreibung  3.3 V octal buffer/line driver; 3-state
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Hersteller  PHILIPS [NXP Semiconductors]
Homepage  http://www.nxp.com
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74LVT_LVTH244A_4
© NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 04 — 3 September 2008
7 of 15
NXP Semiconductors
74LVT244A; 74LVTH244A
3.3 V octal buffer/line driver; 3-state
[1]
All typical values are at VCC = 3.3 V and Tamb = 25 °C.
11. Waveforms
tPLZ
LOW to OFF-state
propagation delay
see Figure 6
VCC = 2.7 V
-
-
5.6
ns
VCC = 3.0 V to 3.6 V
1.8
3.3
5.1
ns
Table 7.
Dynamic characteristics …continued
Voltages are referenced to GND (ground = 0 V); for test circuit see Figure 7.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
Measurement points are given in Table 8.
VOL and VOH are typical voltage output levels that occur with the output load.
Fig 5.
Propagation delay input (nAn) to output (nYn) propagation delays
Measurement points are given in Table 8.
VOL and VOH are typical voltage output levels that occur with the output load.
Fig 6.
3-state output enable and disable times
mna171
nAn input
nYn output
tPLH
tPHL
GND
VI
VM
VM
VM
VM
VOH
VOL
001aae464
tPZL
nYn output
nYn output
nOE input
VOL
VOH
3.0 V
VI
VM
GND
0 V
tPLZ
tPZH
tPHZ
VX
VY
VM
VM
Table 8.
Measurement points
Input
Output
VM
VM
VX
VY
1.5 V
1.5 V
VOL + 0.3 V
VOH − 0.3 V




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