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CD54HC240_07 Datasheet, PDF (5/17 Pages) Texas Instruments – High-Speed CMOS Logic Octal Buffer/Line Drivers, Three-State
◁
CD54/74HC240, CD54/74HCT240, CD74HC241, CD54/74HCT241, CD54/74HC244, CD54/74HCT244
Switching Specifications CL = 50pF, Input tr, tf = 6ns
PARAMETER
SYMBOL
TEST
CONDI-
TIONS
25oC
-40oC TO 85oC -55oC TO 125oC
VCC
(V) MIN TYP MAX MIN TYP MAX MIN TYP MAX UNITS
HC TYPES
Propagation Delay
Data to Outputs
HC240
tPLH, tPHL CL = 50pF
2
-
4.5 -
- 100 -
- 20 -
- 125 -
- 25 -
- 150 ns
- 30 ns
Data to Outputs
HC241
CL = 15pF 5
-
CL = 50pF 6
-
tPLH, tPHL CL = 50pF 2
-
4.5 -
8
-
-
- 17 -
- 110 -
- 22 -
-
-
-
- 21 -
- 140 -
- 28 -
-
-
ns
- 26 ns
- 165 ns
- 33 ns
Data to Outputs
HC244
CL = 15pF 5
-
CL = 50pF 6
-
tPLH, tPHL CL = 50pF 2
-
4.5 -
9
-
-
- 19 -
- 110 -
- 22 -
-
-
-
- 24 -
- 140 -
- 28 -
-
-
ns
- 28 ns
- 165 ns
- 33 ns
Output Enable and Disable
Time
CL = 15pF 5
-
CL = 50pF 6
-
tTHL, tTLH CL = 50pF 2
-
4.5 -
9
-
-
- 19 -
- 150 -
- 30 -
-
-
-
- 24 -
- 190 -
- 38 -
-
-
ns
- 28 ns
- 225 ns
- 45 ns
5
- 12 -
-
-
-
-
-
-
ns
6
-
- 26 -
- 33 -
- 38 ns
Output Transition Time
tTLH, tTHL CL = 50pF 2
-
4.5 -
- 60 -
- 12 -
- 75 -
- 15 -
- 90 ns
- 18 ns
6
-
- 10 -
- 13 -
- 15 ns
Input Capacitance
Three-State Output
Capacitance
CI
CL = 50pF - 10 - 10 -
- 10 -
- 10 pF
CO
CL = 50pF -
-
- 20 -
- 20 -
- 20 pF
Power Dissipation Capacitance
(Notes 3, 4)
CPD
CL = 15pF
HC240
5
- 38 -
-
-
-
-
-
-
pF
HC241
5
- 34 -
-
-
-
-
-
-
pF
HC244
5
- 46 -
-
-
-
-
-
-
pF
HCT TYPES
Propagation Delay
Data to Outputs
HCT240
Data to Outputs
HCT241
Data to Outputs
HCT244
tPHL, tPLH CL = 50pF 4.5 -
- 22 -
CL = 15pF 5
-
9
-
-
tPHL, tPLH CL = 50pF 4.5 -
- 25 -
CL = 15pF 5
- 10 -
-
tPHL, tPLH CL = 50pF 4.5 -
- 25 -
CL = 15pF 5
- 10 -
-
- 28 -
-
-
-
- 31 -
-
-
-
- 31 -
-
-
-
- 33 ns
-
-
ns
- 38 ns
-
-
ns
- 38 ns
-
-
ns
5
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