Nexperia

74ALVC244

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. 9.

Tamb = -40 °C to +85 °C

Symbol Parameter

Conditions

Min

Typ [1]

Max

Unit

nAn to nYn; see Fig. 7

[2]

VCC = 1.65 V to 1.95 V

1.0

2.7

4.4

ns

VCC = 2.3 V to 2.7 V

1.0

2.0

3.1

ns

VCC = 2.7 V

1.0

2.3

3.1

ns

tpd

propagation delay

VCC = 3.0 V to 3.6 V

1.0

2.2

2.8

ns

nOE to nYn; see Fig. 8

[3]

VCC = 1.65 V to 1.95 V

1.0

3.4

6.9

ns

VCC = 2.3 V to 2.7 V

1.0

2.6

5.4

ns

VCC = 2.7 V

1.0

3.2

5.3

ns

ten

enable time

VCC = 3.0 V to 3.6 V

1.0

2.5

4.5

ns

nOE to nYn; see Fig. 8

[4]

VCC = 1.65 V to 1.95 V

1.0

3.8

5.9

ns

VCC = 2.3 V to 2.7 V

1.0

2.2

4.1

ns

VCC = 2.7 V

1.0

3.0

4.4

ns

tdis

disable time

VCC = 3.0 V to 3.6 V

1.0

2.9

4.2

ns

CPD

power dissipation

capacitance

per buffer; VI = GND to VCC; VCC = 3.3 V

[5]

-

20

-

pF

[1] Typical values are measured at Tamb = 25 °C

Typical values for VCC = 1.65 V to 1.95 V are measured at VCC = 1.8 V

Typical values for VCC = 2.3 V to 2.7 V are measured at VCC = 2.5 V

Typical values for VCC = 3.0 V to 3.6 V are measured at VCC = 3.3 V

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

[3] ten is the same as tPZH and tPZL.

[4] tdis is the same as tPHZ and tPLZ.

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

PD = CPD x VCC 2 x fi x N + Σ(CL x VCC 2 x fo) where:

fi = input frequency in MHz

fo = output frequency in MHz

CL = output load capacitance in pF

VCC = supply voltage in Volt

N = number of inputs switching

Σ(CL x VCC 2 x fo) = sum of the outputs

74ALVC244

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

© Nexperia B.V. 2021. All rights reserved

Product data sheet

Rev. 5 — 30 April 2021

6 / 14