SN54ALS174, SN54ALS175, SN54AS174, SN54AS175B

SN74ALS174, SN74ALS175, SN74AS174, SN74AS175B

HEX/QUADRUPLE D-TYPE FLIP-FLOPS WITH CLEAR

SDAS207E - APRIL 1982 - REVISED MAY 2002

4

POST OFFICE BOX 655303

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

otherwise noted)

PARAMETER

TEST CONDITIONS

SN54ALS174

SN54ALS175

SN74ALS174

SN74ALS175

UNIT

MIN

TYP†

MAX

MIN

TYP†

MAX

VIK

VCC = 4.5 V,

II = –18 mA

–1.5

–1.5

V

VOH

VCC = 4.5 V to 5.5 V,

IOH = –0.4 mA

VCC– 2

VCC– 2

V

VOL

VCC =4 5V

IOL = 4 mA

0.25

0.4

0.25

0.4

V

VOL

VCC = 4.5 V

IOL = 8 mA

0.35

0.5

V

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

All others

VCC =5 5V

VI =0 4V

–0.1

–0.1

mA

IIL

CLK

VCC = 5.5 V,

VI = 0.4 V

–0.15

mA

IO‡

VCC = 5.5 V,

VO = 2.25 V

–20

–112

–30

–112

mA

ICC

’ALS174

VCC =5 5V

See Note 3

11

19

11

19

mA

ICC

’ALS175

VCC = 5.5 V,

See Note 3

8

14

9

14

mA

† 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.

NOTE 3: ICC is measured with D inputs and CLR grounded, and CLK at 4.5 V.

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

noted)

SN54ALS174

SN54ALS175

SN74ALS174

SN74ALS175

UNIT

MIN

MAX

MIN

MAX

fclock

Clock frequency

40

50

MHz

CLR low

15

10

tw

Pulse duration

CLK high

12.5

10

ns

CLK low

12.5

10

t

Set p time before CLK

↑

Data

15

10

ns

tsu

Setup time before CLK

↑

CLR inactive

8

6

ns

th

Hold time, data after CLK

↑

0

0

ns

switching characteristics (see Figure 1)

PARAMETER

FROM

(INPUT)

TO

(OUTPUT)

VCC = 4.5 V to 5.5 V,

CL = 50 pF,

TA = MIN to MAX§

UNIT

PARAMETER

(INPUT)

(OUTPUT)

SN54ALS174

SN54ALS175

SN74ALS174

SN74ALS175

UNIT

MIN

MAX

MIN

MAX

fmax

40

50

MHz

tPLH

CLR

Any Q

3

20

5

18

ns

tPHL

CLR

y

(or Q, ’ALS175)

5

30

8

23

ns

tPLH

CLK

Any Q

3

20

3

15

ns

tPHL

CLK

y

(or Q, ’ALS175)

5

24

5

17

ns

§ For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.