SN54ALS374A, SN54AS374, SN74ALS374A, SN74AS374

OCTAL D-TYPE EDGE-TRIGGERED FLIP-FLOPS

WITH 3-STATE OUTPUTS

SDAS167C – APRIL 1982 – REVISED NOVEMBER 1999

3

POST OFFICE BOX 655303

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

otherwise noted)

PARAMETER

TEST CONDITIONS

SN54ALS374A

SN74ALS374A

UNIT

PARAMETER

TEST CONDITIONS

MIN

TYP†

MAX

MIN

TYP†

MAX

UNIT

VIK

VCC = 4.5 V,

II = –18 mA

–1.5

–1.5

V

VCC = 4.5 V to 5.5 V,

IOH = –0.4 mA

VCC–2

VCC–2

VOH

VCC =4 5V

IOH = –1 mA

2.4

3.3

V

VCC = 4.5 V

IOH = –2.6 mA

2.4

3.2

VOL

VCC =4 5V

IOL = 12 mA

0.25

0.4

0.25

0.4

V

VOL

VCC = 4.5 V

IOL = 24 mA

0.35

0.5

V

IOZH

VCC = 5.5 V,

VO = 2.7 V

20

20

µA

IOZL

VCC = 5.5 V,

VO = 0.4 V

–20

–20

µA

II

VCC = 5.5 V,

VI = 7 V

0.1

0.1

mA

IIH

VCC = 5.5 V,

VI = 2.7 V

20

20

µA

IIL

VCC = 5.5 V,

VI = 0.4 V

–0.2

–0.2

mA

IO‡

VCC = 5.5 V,

VO = 2.25 V

–20

–112

–30

–112

mA

Outputs high

11

20

11

19

ICC

VCC = 5.5 V

Outputs low

19

28

19

28

mA

Outputs disabled

20

31

20

31

† All typical values are at VCC = 5 V, TA = 25°C.

‡ The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, IOS.

timing requirements over recommended operating free-air temperature range (unless otherwise

noted)

SN54ALS374A

SN74ALS374A

UNIT

MIN

MAX

MIN

MAX

UNIT

fclock

Clock frequency

30

35

MHz

tw

Pulse duration

CLK high or low

16.5

14

ns

tsu

Setup time

Data before CLK

↑

10

10

ns

th

Hold time

Data after CLK

↑

4

0

ns

switching characteristics over recommended operating conditions (unless otherwise noted

(see Figure 3)

PARAMETER

FROM

TO

SN54ALS374A

SN74ALS374A

UNIT

PARAMETER

(INPUT)

(OUTPUT)

MIN

MAX

MIN

MAX

UNIT

fmax

30

35

MHz

tPLH

CLK

Q

3

14

3

12

ns

tPHL

CLK

Q

5

17

5

16

ns

tPZH

OE

Q

3

18

3

17

ns

tPZL

OE

Q

5

21

5

18

ns

tPHZ

OE

Q

1

11

1

10

ns

tPLZ

OE

Q

2

19

2

18

ns