74LVC2244A 查看數據表（PDF） - NXP Semiconductors.
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74LVC2244A
NXP Semiconductors.
74LVC2244A Datasheet PDF : 17 Pages
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Nexperia
74LVC2244A
Octal buffer/line driver; 30 series termination; 3-state
10. Dynamic characteristics
Table 7. Dynamic characteristics
Voltages are referenced to GND (ground = 0 V). For test circuit see Figure 7.
Symbol Parameter
Conditions
Tamb = 40 C to +85 C 40 C to +125 C Unit
Min Typ[1] Max
Min
Max
tpd
propagation delay nAn to nYn; see Figure 5
[2]
VCC = 1.2 V
-
35
-
-
- ns
VCC = 1.65 V to 1.95 V
1.9
7.8 17.7
1.9
18.6 ns
VCC = 2.3 V to 2.7 V
1.5 4.1 8.7
1.5
9.6 ns
VCC = 2.7 V
1.5 4.1 6.4
1.5
7.0 ns
ten
enable time
VCC = 3.0 V to 3.6 V
nOE to nYn; see Figure 6
1.5 3.5 5.5
1.5
[2]
8.0 ns
VCC = 1.2 V
-
38
-
-
- ns
VCC = 1.65 V to 1.95 V
2.3
8.9 19.7
2.3
20.7 ns
VCC = 2.3 V to 2.7 V
1.9
5.0 10.3
1.9
11.4 ns
VCC = 2.7 V
1.5 5.1 8.1
1.5
9.0 ns
tdis
disable time
VCC = 3.0 V to 3.6 V
nOE to nYn; see Figure 6
1.0 4.0 7.1
1.0
10.5 ns
[2]
VCC = 1.2 V
-
9.0
-
-
- ns
VCC = 1.65 V to 1.95 V
2.9 4.7 9.3
2.9
9.8 ns
VCC = 2.3 V to 2.7 V
1.0 2.6 5.0
1.0
5.6 ns
VCC = 2.7 V
1.5 3.4 6.4
1.5
7.0 ns
VCC = 3.0 V to 3.6 V
1.5 3.2 5.4
1.5
tsk(o)
output skew time
VCC = 3.0 V to 3.6 V
[3]
-
-
1.0
-
CPD
power dissipation
per input; VI = GND to VCC
[4]
capacitance
VCC = 1.65 V to 1.95 V
-
1.8
-
-
8.0 ns
1.5 ns
- pF
VCC = 2.3 V to 2.7 V
-
4.9
-
-
- pF
VCC = 3.0 V to 3.6 V
-
7.7
-
-
- pF
[1] Typical values are measured at Tamb = 25 C and VCC = 1.2 V, 1.8 V, 2.5 V, 2.7 V, and 3.3 V respectively.
[2] tpd is the same as tPLH and tPHL.
ten is the same as tPZL and tPZH.
tdis is the same as tPLZ and tPHZ.
[3] Skew between any two outputs of the same package switching in the same direction. This parameter is guaranteed by design.
[4] CPD is used to determine the dynamic power dissipation (PD in W).
PD = CPD VCC2 fi N + (CL VCC2 fo) where:
fi = input frequency in MHz; fo = output frequency in MHz
CL = output load capacitance in pF
VCC = supply voltage in Volts
N = number of inputs switching
(CL VCC2 fo) = sum of the outputs
74LVC2244A
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 5 — 3 November 2011
© Nexperia B.V. 2017. All rights reserved
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