74VHCT240AFT,74VHCT244AFT

6

11.4.

11.4.

11.4.

11.4. AC Characteristics (Unless otherwise specified, T

AC Characteristics (Unless otherwise specified, T

AC Characteristics (Unless otherwise specified, T

AC Characteristics (Unless otherwise specified, Taaaa = 25

= 25

= 25

= 25 





, Input: t

, Input: t

, Input: t

, Input: trrrr = t

= t

= t

= tffff = 3 ns)

= 3 ns)

= 3 ns)

= 3 ns)

Characteristics

Propagation delay time

3-state output enable time

3-state output disable time

Output skew

Input capacitance

Output capacitance

Power dissipation

capacitance

Part Number

74VHCT240AFT

74VHCT244AFT

74VHCT240AFT

74VHCT244AFT

Symbol

tPLH,tPHL

tPLH,tPHL

tPZL,tPZH

tPLZ,tPHZ

tosLH,tosHL

CIN

COUT

CPD

CPD

Note

(Note 1)

(Note 2)

(Note 2)

Test

Condition





RL = 1 kΩ

RL = 1 kΩ











VCC (V)

5.0 ± 0.5

5.0 ± 0.5

5.0 ± 0.5

5.0 ± 0.5

5.0 ± 0.5

CL (pF)

15

50

15

50

15

50

50

50

Min

























Typ.

5.6

6.1

5.4

5.9

7.7

8.2

8.8



4

9

19

18

Max

7.8

8.8

7.4

8.4

10.4

11.4

11.4

1.0

10







Unit

ns

ns

ns

ns

ns

pF

pF

pF

Note 1: Parameter guaranteed by design. (tosLH = |tPLHm-tPLHn|, tosHL = |tPHLm-tPHLn|)

Note 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)

11.5.

11.5.

11.5.

11.5. AC Characteristics

AC Characteristics

AC Characteristics

AC Characteristics

(Unless otherwise specified, T

(Unless otherwise specified, T

(Unless otherwise specified, T

(Unless otherwise specified, Taaaa = -40 to 85

= -40 to 85

= -40 to 85

= -40 to 85 





, Input: t

, Input: t

, Input: t

, Input: trrrr = t

= t

= t

= tffff = 3 ns)

= 3 ns)

= 3 ns)

= 3 ns)

Characteristics

Propagation delay time

3-state output enable time

3-state output disable time

Output skew

Input capacitance

Part Number

74VHCT240AFT

74VHCT244AFT

Symbol

tPLH,tPHL

tPLH,tPHL

tPZL,tPZH

tPLZ,tPHZ

tosLH,tosHL

CIN

Note

(Note 1)

Test

Condition





RL = 1 kΩ

RL = 1 kΩ





VCC (V)

5.0 ± 0.5

5.0 ± 0.5

5.0 ± 0.5

5.0 ± 0.5

5.0 ± 0.5

CL (pF)

15

50

15

50

15

50

50

50

Min

1.0

1.0

1.0

1.0

1.0

1.0

1.0





Max

9.0

10.0

8.5

9.5

12.0

13.0

13.0

1.0

10

Unit

ns

ns

ns

ns

ns

pF

Note 1: Parameter guaranteed by design. (tosLH = |tPLHm-tPLHn|, tosHL = |tPHLm-tPHLn|)

11.6.

11.6.

11.6.

11.6. AC Characteristics

AC Characteristics

AC Characteristics

AC Characteristics

(Unless otherwise specified, T

(Unless otherwise specified, T

(Unless otherwise specified, T

(Unless otherwise specified, Taaaa = -40 to 125

= -40 to 125

= -40 to 125

= -40 to 125 





, Input: t

, Input: t

, Input: t

, Input: trrrr = t

= t

= t

= tffff = 3 ns)

= 3 ns)

= 3 ns)

= 3 ns)

Characteristics

Propagation delay time

Propagation delay time

3-state output enable time

3-state output disable time

Output skew

Input capacitance

Part Number

74VHCT240AFT

74VHCT244AFT

Symbol

tPLH,tPHL

tPLH,tPHL

tPZL,tPZH

tPLZ,tPHZ

tosLH,tosHL

CIN

Note

(Note 1)

Test

Condition





RL = 1 kΩ

RL = 1 kΩ





VCC (V)

5.0 ± 0.5

5.0 ± 0.5

5.0 ± 0.5

5.0 ± 0.5

5.0 ± 0.5

CL (pF)

15

50

15

50

15

50

50

50

Min

1.0

1.0

1.0

1.0

1.0

1.0

1.0





Max

10.0

11.0

9.5

10.5

13.0

14.5

14.5

1.0

10

Unit

ns

ns

ns

ns

ns

pF

Note 1: Parameter guaranteed by design. (tosLH = |tPLHm-tPLHn|, tosHL = |tPHLm-tPHLn|)

2017-02-23

Rev.4.0

©2017 Toshiba Corporation