MC74VHCT244A(2011) 查看數據表（PDF） - ON Semiconductor
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MC74VHCT244A Datasheet PDF : 8 Pages
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MC74VHCT244A
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ AC ELECTRICAL CHARACTERISTICS (Input tr = tf = 3.0 ns)
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ TA = 25°C
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ Symbol
Parameter
Test Conditions
Min Typ Max
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ tPLH,
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ tPHL
Maximum
Propagation Delay
A to YA or B to YB
VCC = 5.0 ± 0.5 V CL = 15 pF
CL = 50 pF
5.4 7.4
5.9 8.4
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ tPZL,
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ tPZH
Output Enable Time
OEA to YA or OEB to
YB
VCC = 5.0 ± 0.5 V CL = 15 pF
RL = 1 kW
CL = 50 pF
7.7 10.4
8.2 11.4
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ tPLZ,
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ tPHZ
Output Disable Time
OEA to YA or OEB to
YB
VCC = 5.0 ± 0.5 V CL = 50 pF
RL = 1 kW
8.8 11.4
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ tOSLH, OutputtoOutput
VCC = 5.0 ± 0.5 V CL = 50 pF
1.0
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ tOSHL Skew
(Note 1)
TA = − 40 to 85°C
Min
Max
1.0
8.5
1.0
9.5
1.0
12.0
1.0
13.0
1.0
13.0
1.0
TA = 85 to 125°C
Min
Max Unit
11.0
9.5
ns
1.0
10.5
1.0
13.5 ns
1.0
14.5
1.0
14.5 ns
1.0
ns
AC ELECTRICAL CHARACTERISTICS (Input tr = tf = 3.0 ns)
Typical @ 25°C, VCC = 5.0 V
Symbol
Parameter
Min
Typ
Max Unit
CPD Power Dissipation Capacitance (Note 2)
18
pF
Cin Maximum Input Capacitance
4
10
pF
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ Cout Maximum Three−State Output Capacitance (Output in High−Impedance State)
9
pF
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ 1. Parameter guaranteed by design. tOSLH = |tPLHm − tPLHn|, tOSHL = |tPHLm − tPHLn|.
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ 2. CPD is defined as the value of the internal equivalent capacitance which is calculated from the operating current consumption without load.
Average operating current can be obtained by the equation: ICC(OPR) = CPD VCC fin + ICC / 8 (per bit). CPD is used to determine the no−load
dynamic power consumption; PD = CPD VCC2 fin + ICC VCC.
NOISE CHARACTERISTICS (Input tr = tf = 3.0 ns, CL = 50 pF, VCC = 5.0 V)
Symbol
Parameter
VOLP Quiet Output Maximum Dynamic VOL
VOLV Quiet Output Minimum Dynamic VOL
VIHD Minimum High Level Dynamic Input Voltage
VILD Maximum Low Level Dynamic Input Voltage
TA = 25°C
Typ
Max Unit
0.9
1.1
V
−0.9 −1.1 V
2.0
V
0.8
V
ORDERING INFORMATION
Device
MC74VHCT244ADWRG
Package
SOIC−20WB
(Pb−Free)
Shipping†
1000 / Tape & Reel
MC74VHCT244ADTG
TSSOP−20*
75 Units / Rail
MC74VHCT244ADTRG
TSSOP−20*
2500 / Tape & Reel
MC74VHCT244AMELG
SOEIAJ−20
(Pb−Free)
2000 / Tape & Reel
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
*This package is inherently Pb−Free.
http://onsemi.com
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