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MC74HCT244A Datasheet(PDF) 3 Page - ON Semiconductor

Part No. MC74HCT244A
Description  Octal 3-State Noninverting Buffer/Line Driver/Line Receiver with LSTTL-Compatible Inputs
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Maker  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

MC74HCT244A Datasheet(HTML) 3 Page - ON Semiconductor

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MC74HCT244A
http://onsemi.com
3
∆ICC
Additional Quiescent Supply
Current
Vin = 2.4 V, Any One Input
Vin =VCC or GND Other Inputs
≥ –55_C
25
_C to 125_C
Current
Vin = VCC or GND, Other In uts
lout = 0 µA
5.5
2.9
2.4
mA
NOTES:
1. Information on typical parametric values along with frequency or heavy load considerations can be found in Chapter 2 of the ON
Semiconductor High–Speed CMOS Data Book (DL129/D).
2. Total Supply Current = ICC + Σ∆ICC.
AC ELECTRICAL CHARACTERISTICS (VCC = 5.0 V ± 10%, CL = 50 pF, Input tr = tf = 6 ns)
Guaranteed Limit
Symbol
Parameter
– 55 to
25
_C
v 85_C
v 125_C
Unit
tPLH,
tPHL
Maximum Propagation Delay, A to YA or B to YB
(Figures 1 and 3)
20
25
30
ns
tPLZ,
tPHZ
Maximum Propagation Delay, Output Enable to YA or YB
(Figures 2 and 4)
26
33
39
ns
tPZL,
tPZH
Maximum Propagation Delay, Output Enable to YA or YB
(Figures 2 and 4)
22
28
33
ns
tTLH,
tTHL
Maximum Output Transition Time, Any Output
(Figures 1 and 3)
12
15
18
ns
Cin
Maximum Input Capacitance
10
10
10
pF
Cout
Maximum Three–State Output Capacitance (Output in
High–Impedance State)
15
15
15
pF
NOTE: For propagation delays with loads other than 50 pF, and information on typical parametric values, see Chapter 2 of the ON
Semiconductor High–Speed CMOS Data Book (DL129/D).
Typical @ 25
°C, VCC = 5.0 V
CPD
Power Dissipation Capacitance (Per Enabled Output)*
55
pF
* Used to determine the no–load dynamic power consumption: PD = CPD VCC2f + ICC VCC. For load considerations, see Chapter 2 of the
ON Semiconductor High–Speed CMOS Data Book (DL129/D).
SWITCHING WAVEFORMS
Figure 1.
Figure 2.
3 V
GND
tf
tr
INPUT
A OR B
OUTPUT
YA OR YB
0.3 V
1.3 V
2.7 V
10%
1.3 V
90%
tTLH
tPLH
tPHL
tTHL
ENABLE
A OR B
OUTPUT Y
OUTPUT Y
1.3 V
1.3 V
1.3 V
90%
10%
tPZL
tPLZ
tPZH
tPHZ
3 V
GND
HIGH
IMPEDANCE
VOL
VOH
HIGH
IMPEDANCE


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