74ACT11544

OCTAL REGISTERED TRANSCEIVER

WITH 3STATE OUTPUTS

SCAS133 − D3609, JULY 1990 − REVISED APRIL 1993

POST OFFICE BOX 655303

2−3

electrical characteristics over recommended operating free-air temperature range

PARAMETER

TEST CONDITIONS

VCC

TA = 25°C

MIN

MAX

UNIT

PARAMETER

TEST CONDITIONS

VCC

MIN

TYP

MAX

MIN

MAX

UNIT

IOH = − 50 A

4.5 V

4.4

4.4

IOH = − 50 mA

5.5 V

5.4

5.4

VOH

IOH = − 24 mA

4.5 V

3.94

3.8

V

VOH

IOH = − 24 mA

5.5 V

4.94

4.8

V

IOH = − 75 mA†

5.5 V

3.85

IOL = 50 A

4.5 V

0.1

0.1

IOL = 50 mA

5.5 V

0.1

0.1

VOL

IOL = 24 mA

4.5 V

0.36

0.44

V

VOL

IOL = 24 mA

5.5 V

0.36

0.44

V

IOL = 75 mA†

5.5 V

1.65

II

Control inputs

VI = VCC or GND

5.5 V

± 0.1

± 1

mA

IOZ

A or B ports‡

VO = VCC or GND

5.5 V

± 0.5

± 5

mA

ICC

VI = VCC or GND,

IO = 0

5.5 V

8

80

mA

DICC§

One input at 3.4 V,

5.5 V

0.9

1

mA

DICC§

One input at 3.4 V,

Other inputs at GND or VCC

5.5 V

0.9

1mA

Ci

Control inputs

VI = VCC or GND

5 V

4.5

pF

Co

A or B ports

VO = VCC or GND

5 V

12

pF

† Not more than one output should be tested at a time, and the duration of the test should not exceed 10 ms.

‡ For I/O ports, the parameter IOZ includes the input leakage current.

§ 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.

timing requirements over recommended ranges of supply voltage and operating free-air

temperature (unless otherwise noted) (see Figure 1)

TA = 25°C

MIN

MAX

UNIT

MIN

MAX

MIN

MAX

UNIT

tw

Pulse duration, LEAB or LEBA low

4

4

ns

tsu

Setup time

Data before LEAB or LEBA

↑

2.5

2.5

ns

tsu

Setup time

Data before CEAB or CEBA

↑

3

3

ns

th

Hold time

Data after LEAB or LEBA

↑

2

2

ns

th

Hold time

Data after CEAB or CEBA

↑

1.5

1.5

ns