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74LVT244ADB Fiches technique(PDF) 6 Page - NXP Semiconductors

No de pièce 74LVT244ADB
Description  3.3 V octal buffer/line driver; 3-state
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Fabricant  NXP [NXP Semiconductors]
Site Internet  http://www.nxp.com
Logo NXP - NXP Semiconductors

74LVT244ADB Fiches technique(HTML) 6 Page - NXP Semiconductors

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74LVT_LVTH244A_4
© NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 04 — 3 September 2008
6 of 15
NXP Semiconductors
74LVT244A; 74LVTH244A
3.3 V octal buffer/line driver; 3-state
[1]
All typical values are at Tamb = 25 °C.
[2]
Unused pins at VCC or GND.
[3]
This is the bus hold overdrive current required to force the input to the opposite logic state.
[4]
This parameter is valid for any VCC between 0 V and 1.2 V with a transition time of up to 10 ms. From VCC = 1.2 V to VCC = 3.3 V ± 0.3 V
a transition time of 100
µs is permitted. This parameter is valid for T
amb = 25 °C only.
[5]
ICC is measured with outputs pulled to VCC or GND.
[6]
This is the increase in supply current for each input at the specified voltage level other than VCC or GND.
10. Dynamic characteristics
IOZ
OFF-state output current
VCC = 3.6 V; VI =VIH or VIL
VO = 3.0 V
-
1
5
µA
VO = 0.5 V
−5
−1
−µA
ICC
supply current
VCC = 3.6 V; VI = GND or VCC;
IO =0A
output HIGH
-
0.13
0.19
mA
output LOW
-
3
12
mA
outputs disabled
[5]
-
0.13
0.19
mA
∆ICC
additional supply current
per input pin; VCC = 3.0 V to 3.6 V;
one input at VCC − 0.6 V and other
inputs at VCC or GND
[6]
-
0.1
0.2
mA
CI
input capacitance
VI = 0 V or 3.0 V
-
4
-
pF
CO
output capacitance
outputs disabled; VO = 0 V or 3.0 V
-
8
-
pF
Table 6.
Static characteristics …continued
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).
Symbol Parameter
Conditions
Min
Typ
Max
Unit
Table 7.
Dynamic characteristics
Voltages are referenced to GND (ground = 0 V); for test circuit see Figure 7.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
Tamb = −40 °C to +85 °C [1]
tPLH
LOW to HIGH
propagation delay
nAn to nYn; see Figure 5
VCC = 2.7 V
-
-
5.0
ns
VCC = 3.0 V to 3.6 V
1
2.5
4.1
ns
tPHL
HIGH to LOW
propagation delay
nAn to nYn; see Figure 5
VCC = 2.7 V
-
-
5.1
ns
VCC = 3.0 V to 3.6 V
1
2.6
4.1
ns
tPZH
OFF-state to HIGH
propagation delay
see Figure 6
VCC = 2.7 V
-
-
6.3
ns
VCC = 3.0 V to 3.6 V
1
3.2
5.2
ns
tPZL
OFF-state to LOW
propagation delay
see Figure 6
VCC = 2.7 V
-
-
6.7
ns
VCC = 3.0 V to 3.6 V
1.1
3.1
5.2
ns
tPHZ
HIGH to OFF-state
propagation delay
see Figure 6
VCC = 2.7 V
-
-
6.3
ns
VCC = 3.0 V to 3.6 V
1.9
3.3
5.6
ns


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