SN54AHC174, SN74AHC174

HEX D-TYPE FLIP-FLOPS

WITH CLEAR

SCLS425F – JUNE 1998 – REVISED FEBRUARY 2002

4

POST OFFICE BOX 655303

(unless otherwise noted)

TA = 25°C

SN54AHC174

SN74AHC174

UNIT

MIN

MAX

MIN

MAX

MIN

MAX

UNIT

t

Pulse duration

CLR low

5

5

5

ns

tw

Pulse duration

CLK high or low

5

5

5

ns

t

Setup time before CLK

↑

Data

5

6

6

ns

tsu

Setup time before CLK

↑

CLR inactive

3

3

3

ns

th

Hold time, data after CLK

↑

0

0

0

ns

(unless otherwise noted)

TA = 25°C

SN54AHC174

SN74AHC174

UNIT

MIN

MAX

MIN

MAX

MIN

MAX

UNIT

t

Pulse duration

CLR low

5

5

5

ns

tw

Pulse duration

CLK high or low

5

5

5

ns

t

Setup time before CLK

↑

Data

4.5

4.5

4.5

ns

tsu

Setup time before CLK

↑

CLR inactive

2.5

2.5

2.5

ns

th

Hold time, data after CLK

↑

0.5

0.5

0.5

ns

switching characteristics over recommended operating free-air temperature range,

PARAMETER

FROM

TO

LOAD

TA = 25°C

SN54AHC174

SN74AHC174

UNIT

PARAMETER

(INPUT)

(OUTPUT)

CAPACITANCE

MIN

TYP

MAX

MIN

MAX

MIN

MAX

UNIT

f

CL = 15 pF

95*

170*

80*

80

MHz

fmax

CL = 50 pF

55

130

50

50

MHz

tPHL

CLR

Any Q

CL = 15 pF

4.5*

11.4*

1*

13.5*

1

13.5

ns

tPLH

CLK

Any Q

CL =15 pF

5.8*

11*

1*

13*

1

13

ns

tPHL

CLK

Any Q

CL = 15 pF

5.8*

11*

1*

13*

1

13

ns

tPHL

CLR

Any Q

CL = 50 pF

6

14.9

1

17

1

17

ns

tPLH

CLK

Any Q

CL =50 pF

7.5

14.5

1

16.5

1

16.5

ns

tPHL

CLK

Any Q

CL = 50 pF

7.5

14.5

1

16.5

1

16.5

ns

tsk(o)

CL = 50 pF

1.5**

1.5

ns

* On products compliant to MIL-PRF-38535, this parameter is not production tested.

** On products compliant to MIL-PRF-38535, this parameter does not apply.

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.