MC74VHCT244A 查看數據表（PDF） - ON Semiconductor
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MC74VHCT244A Datasheet PDF : 7 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 VCC = 5.0 ± 0.5 V CL = 15 pF
OEA to YA or OEB to RL = 1 kW
CL = 50 pF
YB
7.7 10.4
8.2 11.4
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ tPLZ,
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ tPHZ
Output Disable Time VCC = 5.0 ± 0.5 V CL = 50 pF
OEA to YA or OEB to RL = 1 kW
YB
8.8 11.4
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ tOSLH, Output to Output
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
VOLP
VOLV
VIHD
VILD
Parameter
Quiet Output Maximum Dynamic VOL
Quiet Output Minimum Dynamic VOL
Minimum High Level Dynamic Input Voltage
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
MC74VHCT244ADWR2
Package
SOIC−20WB
Shipping†
1000 / Tape & Reel
MC74VHCT244ADWRG
SOIC−20WB
(Pb−Free)
1000 / Tape & Reel
MC74VHCT244ADT
TSSOP−20*
75 Units / Rail
MC74VHCT244ADTG
TSSOP−20*
75 Units / Rail
MC74VHCT244ADTR2
TSSOP−20*
2500 / Tape & Reel
MC74VHCT244ADTRG
TSSOP−20*
2500 / Tape & Reel
MC74VHCT244AMEL
SOEIAJ−20
2000 / 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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