74ACT11646

OCTAL BUS TRANSCEIVER AND REGISTER

WITH 3STATE OUTPUTS

SCAS061A − D2957, JULY 1987 − REVISED APRIL 1993

POST OFFICE BOX 655303

POST OFFICE BOX 1443

2−4

−0.5 V to 7 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

± 20 mA

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

± 50 mA

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

± 50 mA

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

± 200 mA

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Storage temperature range

− 65

°C to 150°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

† Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only and

functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not

implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

NOTE 1: The input and output voltage ratings may be exceeded if the input and output current ratings are observed.

recommended operating conditions

MIN

MAX

UNIT

VCC

Supply voltage

4.5

5.5

V

VIH

High-level input voltage

2

V

VIL

Low-level input voltage

0.8

V

VI

Input voltage

0

VCC

V

VO

Output voltage

0

VCC

V

IOH

High-level output current

−24

mA

IOL

Low-level output current

24

mA

Dt/Dv

Input transition rise or fall rate

0

10

ns/ V

TA

Operating free-air temperature

−40

85

°C

electrical characteristics over recommended operating free-air temperature range (unless

otherwise noted)

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

IOZ

A or B ports§

VO = VCC or GND

5.5 V

± 0.5

± 5

mA

II

G or DIR

VI = VCC or GND

5.5 V

± 0.1

± 1

mA

ICC

VI = VCC or GND, IO = 0

5.5 V

8

80

mA

DICC¶

One input at 3.4 V, Other inputs at GND or VCC

5.5 V

0.9

1

mA

Ci

VI = VCC or GND

5 V

4.5

pF

Co

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 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.