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74LVC244A

Octal buffer/line driver; 3-state

Nexperia B.V. All rights reserved 

Nexperia

74LVC244A; 74LVCH244A

Octal buffer/line driver; 3-state

10. Dynamic characteristics

Table 7. Dynamic characteristics

Voltages are referenced to GND (ground = 0 V). For test circuit see Fig. 8.

Symbol Parameter

Conditions

-40 °C to +85 °C

Min Typ [1] Max

tpd

ten

tdis

tsk(o)

CPD

propagation delay nAn to nYn; see Fig. 6

[2]

VCC = 1.2 V

-

VCC = 1.65 V to 1.95 V

1.5

enable time

VCC = 2.3 V to 2.7 V

VCC = 2.7 V

VCC = 3.0 V to 3.6 V

nOE to nYn; see Fig. 7

1.0

1.5

1.5

[2]

disable time

VCC = 1.2 V

VCC = 1.65 V to 1.95 V

VCC = 2.3 V to 2.7 V

VCC = 2.7 V

VCC = 3.0 V to 3.6 V

nOE to nYn; see Fig. 7

-

1.5

1.5

1.5

1.0

[2]

VCC = 1.2 V

-

VCC = 1.65 V to 1.95 V

2.2

VCC = 2.3 V to 2.7 V

0.5

VCC = 2.7 V

1.5

VCC = 3.0 V to 3.6 V

1.5

output skew time

[3] -

power dissipation per input; VI = GND to VCC [4]

capacitance

VCC = 1.65 V to 1.95 V

-

VCC = 2.3 V to 2.7 V

-

VCC = 3.0 V to 3.6 V

-

17.0

-

6.4

13.7

3.4

7.1

3.4

6.9

2.9

5.9

24.0

-

7.0

17.3

3.9

9.5

4.1

8.6

3.2

7.6

9.0

-

4.5

9.8

3.6

5.5

3.3

6.8

3.1

5.8

-

1.0

6.4

-

9.6

-

12.5

-

-40 °C to +125 °C Unit

Min

Max

-

- ns

1.5

15.8 ns

1.0

8.2 ns

1.5

9.0 ns

1.5

7.5 ns

-

- ns

1.5

20.0 ns

1.5

11.0 ns

1.5

11.0 ns

1.0

9.5 ns

-

- ns

2.2

11.3 ns

0.5

6.4 ns

1.5

8.5 ns

1.5

7.5 ns

-

1.5 ns

-

- pF

-

- pF

-

- pF

[1] Typical values are measured at Tamb = 25 °C and VCC = 1.2 V, 1.8 V, 2.5 V, 2.7 V, and 3.3 V respectively.

[2] tpd is the same as tPLH and tPHL.

ten is the same as tPZL and tPZH.

tdis is the same as tPLZ and tPHZ.

[3] Skew between any two outputs of the same package switching in the same direction. This parameter is guaranteed by design.

[4] CPD is used to determine the dynamic power dissipation (PD in μW).

PD = CPD × VCC2 × fi × N + Σ(CL × VCC2 × fo) where:

fi = input frequency in MHz; fo = output frequency in MHz

CL = output load capacitance in pF

VCC = supply voltage in Volts

N = number of inputs switching

Σ(CL × VCC2 × fo) = sum of the outputs.

74LVC_LVCH244A

Product data sheet

All information provided in this document is subject to legal disclaimers.

Rev. 10 — 8 April 2020

© Nexperia B.V. 2020. All rights reserved

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