5.5 Electrical Characteristics (continued)

over recommended operating free-air temperature range (unless otherwise noted)

PARAMETER

TEST CONDITIONS

VCC

MIN

TYP

MAX

UNIT

VOL

IOL = 50 µA

TA = 25°C

4.5 V

0.001

0.1

V

SN54ACT244

0.1

SN74ACT244

0.1

TA = 25°C

5.5 V

0.001

0.1

SN54ACT244

0.1

SN74ACT244

0.1

IOL = 24 mA

TA = 25°C

4.5 V

0.36

SN54ACT244

0.5

SN74ACT244

0.44

TA = 25°C

5.5 V

0.36

SN54ACT244

0.5

SN74ACT244

0.44

IOL = 50 mA(1)

SN54ACT244

5.5 V

1.65

IOL = 75 mA(1)

SN74ACT244

5.5 V

1.65

IOZ

VO = VCC or GND

TA = 25°C

5.5 V

±0.25

µA

SN54ACT244

±5

SN74ACT244

±2.5

II

VI = VCC or GND

TA = 25°C

5.5 V

±0.1

µA

SN54ACT244

±1

SN74ACT244

±1

ICC

VI = VCC or GND, IO = 0

TA = 25°C

5.5 V

4

µA

SN54ACT244

80

SN74ACT244

40

ΔICC (2)

One input at 3.4 V,

Other inputs at GND or VCC

TA = 25°C

5.5 V

0.6

mA

SN54ACT244

1.6

SN74ACT244

1.5

CI

VI = VCC or GND

TA = 25°C

5 V

2.5

pF

Co

VI = VCC or GND

TA = 25°C

5 V

8

pF

(1)

Not more than one output should be tested at a time, and the duration of the test should not exceed 2 ms.

(2)

This is the increase in supply current for each input that is at one of the specified TTL voltage levels, rather than 0 V or VCC.

5.6 Switching Characteristics

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

tPLH

A

Y

TA = 25°C

2

6.5

9

ns

SN54ACT244

1

10

SN74ACT244

1.5

10

tPHL

TA = 25°C

2

7

9

SN54ACT244

1

10

SN74ACT244

1.5

10

SN54ACT244, SN74ACT244

SCAS517G – JUNE 1995 – REVISED MARCH 2024

www.ti.com

6

Submit Document Feedback

Copyright © 2024 Texas Instruments Incorporated

Product Folder Links: SN54ACT244 SN74ACT244