54AC16620, 74AC16620

16-BIT BUS TRANSCEIVERS

WITH 3-STATE OUTPUTS

SCAS239A – JULY 1990 – REVISED APRIL 1996

4

POST OFFICE BOX 655303

recommended operating conditions (see Note 2)

54AC16620

74AC16620

UNIT

MIN

NOM

MAX

MIN

NOM

MAX

UNIT

VCC

Supply voltage

3

5

5.5

3

5

5.5

V

VCC = 3 V

2.1

2.1

VIH

High-level input voltage

VCC = 4.5 V

3.15

3.15

V

VCC = 5.5 V

3.85

3.85

VCC = 3 V

0.9

0.9

VIL

Low-level input voltage

VCC = 4.5 V

1.35

1.35

V

VCC = 5.5 V

1.65

1.65

VI

Input voltage

0

VCC

0

VCC

V

VO

Output voltage

0

VCC

0

VCC

V

VCC = 3 V

–4

–4

IOH

High-level output current

VCC = 4.5 V

–24

–24

mA

VCC = 5.5 V

–24

–24

VCC = 3 V

12

12

IOL

Low-level output current

VCC = 4.5 V

24

24

mA

VCC = 5.5 V

24

24

∆t/∆v

Input transition rise or fall rate

0

10

0

10

ns/V

TA

Operating free-air temperature

–55

125

–40

85

°C

NOTE 3: Unused inputs must be held high or low to prevent them from floating.

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

otherwise noted)

PARAMETER

TEST CONDITIONS

VCC

TA = 25°C

54AC16620

74AC16620

UNIT

PARAMETER

TEST CONDITIONS

VCC

MIN

TYP

MAX

MIN

MAX

MIN

MAX

UNIT

3 V

2.9

2.9

2.9

IOH = –50 µA

4.5 V

4.4

4.4

4.4

5.5 V

5.4

5.4

5.4

VOH

IOH = –4 mA

3 V

2.58

2.48

2.48

V

IOH =24 mA

4.5 V

3.94

3.8

3.8

IOH = –24 mA

5.5 V

4.94

4.8

4.8

IOH = –75 mA†

5.5 V

3.85

3.85

3 V

0.1

0.1

0.1

IOL = 50 µA

4.5 V

0.1

0.1

0.1

5.5 V

0.1

0.1

0.1

VOL

IOL = 12 mA

3 V

0.36

0.44

0.44

V

IOL =24mA

4.5 V

0.36

0.44

0.44

IOL = 24 mA

5.5 V

0.36

0.44

0.44

IOL = 75 mA†

5.5 V

1.65

1.65

II

Control inputs

VI = VCC or GND

5.5 V

±0.1

±1

±1

µA

IOZ‡

A or B ports

VO = VCC or GND

5.5 V

±0.5

±5

±5

µA

ICC

VI = VCC or GND,

IO = 0

5.5 V

8

80

80

µA

Ci

Control inputs

VI = VCC or GND

5 V

4.5

pF

Cio

A or B ports

VO = VCC or GND

5 V

16

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.

PRODUCT PREVIEW information concerns products in the formative or

design phase of development. Characteristic data and other

specifications are design goals. Texas Instruments reserves the right to

change or discontinue these products without notice.