54AC16823, 74AC16823

18BIT BUS INTERFACE FLIPFLOPS

WITH 3STATE OUTPUTS

SCAS243A − APRIL 1991 − REVISED APRIL 1996

4

POST OFFICE BOX 655303

POST OFFICE BOX 1443

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

otherwise noted)

PARAMETER

TEST CONDITIONS

VCC

TA = 25

°C

54AC16823

74AC16823

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

IOH = −50 µA

5.5 V

5.4

5.4

5.4

VOH

IOH = −4 mA

3 V

2.58

2.48

2.48

V

VOH

IOL = −24 mA

4.5 V

3.94

3.8

3.8

V

IOL = −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

IOL = 50 µA

5.5 V

0.1

0.1

0.1

VOL

IOL = 12 mA

3 V

0.36

0.44

0.44

V

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

VI = VCC or GND

5.5 V

±0.1

±1

±1

µA

IOZ

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

VI = VCC or GND

5 V

3

pF

Co

VO = VCC or GND

5 V

11

pF

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

timing requirements over recommended operating free-air temperature range,

TA = 25°C

54AC16823

74AC16823

UNIT

MIN

MAX

MIN

MAX

MIN

MAX

UNIT

fclock

Clock frequency

0

60

0

60

0

60

MHz

tw

Pulse duration

CLR low

3.3

3.3

3.3

ns

tw

Pulse duration

CLK high or low

8.4

8.4

8.4

ns

CLR inactive

0.5

0.5

0.5

tsu

Setup time before CLK

↑

Data

7.2

7.2

7.2

ns

tsu

Setup time before CLK

↑

CLKEN low

5.8

5.8

5.8

th

Hold time after CLK

↑

Data

0

0

0

ns

th

Hold time after CLK

↑

CLKEN high or low

1

1

1

ns

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.