54ACT16640, 74ACT16640

16-BIT BUS TRANSCEIVERS

WITH 3-STATE OUTPUTS

SCAS173A - JULY 1990 - REVISED APRIL 1996

4

POST OFFICE BOX 655303

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

otherwise noted)

PARAMETER

TEST CONDITIONS

VCC

TA = 25°C

54ACT16640

74ACT16640

UNIT

PARAMETER

TEST CONDITIONS

VCC

MIN

TYP

MAX

MIN

MAX

MIN

MAX

UNIT

IOH =50 µA

4.5 V

4.4

4.4

4.4

IOH = –50 µA

5.5 V

5.4

5.4

5.4

VOH

IOH =24 mA

4.5 V

3.94

3.8

3.8

V

IOH = –24 mA

5.5 V

4.94

4.8

4.8

IOH = –75 mA†

5.5 V

3.85

3.85

IOL =50 µA

4.5 V

0.1

0.1

0.1

IOL = 50 µA

5.5 V

0.1

0.1

0.1

VOL

IOL =24 mA

4.5 V

0.36

0.44

0.44

V

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

±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

∆ICC§

One input at 3.4 V,

Other inputs at VCC or GND

5.5 V

0.9

1

1

mA

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.

§ 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

54ACT16640

74ACT16640

UNIT

PARAMETER

(INPUT)

(OUTPUT)

MIN

TYP

MAX

MIN

MAX

MIN

MAX

UNIT

tPLH

AorB

BorA

2.2

6

8.3

2.2

9.1

2.2

9.1

ns

tPHL

A or B

B or A

4.1

7.6

9.3

4.1

10.5

4.1

10.5

ns

tPZH

OE

AorB

2.7

6.9

8.9

2.7

9.8

2.7

9.8

ns

tPZL

OE

A or B

3.5

8.2

10.4

3.5

11.5

3.5

11.5

ns

tPHZ

OE

AorB

6.1

9.4

11.4

6.1

12.5

6.1

12.5

ns

tPLZ

OE

A or B

5.5

8.7

10.3

5.5

11

5.5

11

ns

PARAMETER

TEST CONDITIONS

TYP

UNIT

C d

Power dissipation capacitance per transceiver

Outputs enabled

CL =50 pF

f=1MHz

52

pF

Cpd

Power dissipation capacitance per transceiver

Outputs disabled

CL = 50 pF,

f = 1 MHz

9

pF

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.