74LVC244A データシートの表示（PDF） - NXP Semiconductors.
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74LVC244A
NXP Semiconductors.
74LVC244A Datasheet PDF : 19 Pages
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NXP Semiconductors
74LVC244A; 74LVCH244A
Octal buffer/line driver; 3-state
10. Dynamic characteristics
Table 7. Dynamic characteristics
Voltages are referenced to GND (ground = 0 V). For test circuit see Figure 8.
Symbol Parameter Conditions
40 C to +85 C
Min Typ[1] Max
tpd
propagation nAn to nYn; see Figure 6
delay
VCC = 1.2 V
[2]
-
17.0
-
VCC = 1.65 V to 1.95 V
1.5 6.4 13.7
VCC = 2.3 V to 2.7 V
1.0 3.4 7.1
VCC = 2.7 V
1.5 3.4 6.9
VCC = 3.0 V to 3.6 V
ten
enable time nOE to nYn; see Figure 7
1.5 2.9 5.9
[2]
VCC = 1.2 V
-
24.0
-
VCC = 1.65 V to 1.95 V
1.5 7.0 17.3
VCC = 2.3 V to 2.7 V
1.5 3.9 9.5
VCC = 2.7 V
1.5 4.1 8.6
VCC = 3.0 V to 3.6 V
tdis
disable time nOE to nYn; see Figure 7
1.0 3.2 7.6
[2]
VCC = 1.2 V
-
9.0
-
VCC = 1.65 V to 1.95 V
2.2 4.5 9.8
VCC = 2.3 V to 2.7 V
0.5 3.6 5.5
VCC = 2.7 V
1.5 3.3 6.8
tsk(o)
output skew
time
VCC = 3.0 V to 3.6 V
1.5 3.1 5.8
[3]
-
-
1.0
CPD
power
per input; VI = GND to VCC
dissipation
capacitance
VCC = 1.65 V to 1.95 V
VCC = 2.3 V to 2.7 V
[4]
-
6.4
-
-
9.6
-
VCC = 3.0 V to 3.6 V
-
12.5
-
40 C to +125 C Unit
Min
Max
-
- ns
1.5
15.8 ns
1.0
8.2 ns
1.5
9.0 ns
1.5
7.5 ns
-
- ns
1.5
20.0 ns
1.5
11.0 ns
1.5
11.0 ns
1.0
9.5 ns
-
- ns
2.2
11.3 ns
0.5
6.4 ns
1.5
8.5 ns
1.5
7.5 ns
-
1.5 ns
-
- pF
-
- pF
-
- 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.
74LVC_LVCH244A
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 8 — 26 June 2013
© NXP B.V. 2013. All rights reserved.
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