5.6 Switching Characteristics (continued)

over recommended operating free-air temperature range, VCC = 5 V ± 0.5 V (unless otherwise noted) (see Figure 6-1)

PARAMETER

FROM

(INPUT)

TO

(OUTPUT)

TEST CONDITIONS

MIN

TYP

MAX

UNIT

tPZH

OE

Y

TA = 25°C

1.5

7

8.5

ns

SN54ACT244

1

9.5

SN74ACT244

1

9.5

tPZL

TA = 25°C

2

7

9.5

SN54ACT244

1

11

SN74ACT244

1.5

10.5

tPHZ

OE

Y

TA = 25°C

2

8

9.5

ns

SN54ACT244

1

11

SN74ACT244

1.5

10.5

tPLZ

TA = 25°C

2.5

7.5

10

SN54ACT244

1

11.5

SN74ACT244

2

10.5

5.7 Operating Characteristics

VCC = 5 V, TA = 25°C

PARAMETER

TEST CONDITIONS

TYP

UNIT

Cpd

Power dissipation capacitance per buffer/driver

CL = 50 pF,

f = 1 MHz

45

pF

5.8 Typical Characteristics

IOH mA

-75

-65

-55

-45

-35

-25

-15

-5

3.8

3.9

4

4.1

4.2

4.3

4.4

4.5

4.6

4.7

4.8

4.9

5

5.1

5.2

5.3

5.4

D001

VCC 5.5V

Figure 5-1. VOH Vs IOH

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SN54ACT244, SN74ACT244

SCAS517G – JUNE 1995 – REVISED MARCH 2024

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