74ACT11657

OCTAL TRANSCEIVER WITH PARITY GENERATOR/CHECKER

AND 3STATE OUTPUTS

SCAS232 − AUGUST 1992 − REVISED APRIL 1993

POST OFFICE BOX 655303

POST OFFICE BOX 1443

2−5

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 µA

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 µA

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

A or B ports

VI = VCC or GND

5.5 V

±0.1

±1

µA

IOZ‡

Control Inputs

VO = VCC or GND

5.5 V

±0.5

±5

µA

ICC

VI = VCC or GND, IO = 0

5.5 V

8

80

µA

∆ICC§

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

5.5 V

0.9

1

mA

Ci

Control inputs

VI = VCC or GND

5 V

4.5

pF

Co

PARITY/ERR

VO = VCC or GND

5 V

10

pF

Cio

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.

switching characteristics over recommended operating free-air temperature range,

PARAMETER

FROM

TO

TA = 25°C

MIN

MAX

UNIT

PARAMETER

FROM

(INPUT)

TO

(OUTPUT)

MIN

TYP

MAX

MIN

MAX

UNIT

tPLH

A or B

B or A

2.9

6.7

8.4

2.9

9.4

ns

tPHL

A or B

B or A

2.2

7

8.4

2.2

9.4

ns

tPLH

A

PARITY

3.4

10.4

12.7

3.4

14.4

ns

tPHL

A

PARITY

3.9

10.9

13.2

3.9

15

ns

tPLH

ODD/EVEN

PARITY, ERR

2.5

7.9

9.4

2.5

10.7

ns

tPHL

ODD/EVEN

PARITY, ERR

3

8.5

10

3

11.3

ns

tPLH

B

ERR

4.6

18.1

20.6

4.6

23.6

ns

tPHL

B

ERR

4.9

18.5

21.8

4.9

24.6

ns

tPLH

PARITY

ERR

4

10.9

12.8

4

14.6

ns

tPHL

PARITY

ERR

3.9

11

12.9

3.9

14.7

ns

tPZH

OE

A, B, PARITY, or ERR

2.6

9.1

10.8

2.6

12.1

ns

tPZL

OE

A, B, PARITY, or ERR

3.1

10.6

12.3

3.1

13.8

ns

tPHZ

OE

A, B, PARITY, or ERR

4.5

9.1

10.8

4.5

12.1

ns

tPLZ

OE

A, B, PARITY, or ERR

4.5

8.7

10.5

4.5

11.6

ns