SN54ALS169B, SN54AS169A, SN74ALS169B, SN74AS169A

SYNCHRONOUS 4-BIT UP/DOWN BINARY COUNTERS

SDAS125B – MARCH 1984 – REVISED DECEMBER 1994

2–6

POST OFFICE BOX 655303

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

(INPUT)

(OUTPUT)

SN54ALS169B

SN74ALS169B

MIN

MAX

MIN

MAX

fmax

22

40

MHz

tPLH

CLK

RCO

3

20

3

20

ns

tPHL

CLK

RCO

6

25

6

20

ns

tPLH

CLK

Any Q

2

20

2

15

ns

tPHL

CLK

Any Q

5

23

5

20

ns

tPLH

ENT

RCO

2

16

2

13

ns

tPHL

ENT

RCO

3

24

3

16

ns

tPLH

U/D

RCO

4

22

5

19

ns

tPHL

U/D

RCO

5

26

5

19

ns

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

7 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

– 55

°C to 125°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SN74AS169A

0

°C to 70°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Storage temperature range

– 65

°C to 150°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

‡ Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and

functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not

implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

recommended operating conditions

SN54AS169A

SN74AS169A

UNIT

MIN

NOM

MAX

MIN

NOM

MAX

UNIT

VCC

Supply voltage

4.5

5

5.5

4.5

5

5.5

V

VIH

High-level input voltage

2

2

V

VIL

Low-level input voltage

0.8

0.8

V

IOH

High-level output current

–2

–2

mA

IOL

Low-level output current

20

20

mA

fclock*

Clock frequency

0

60

0

75

MHz

tw*

Pulse duration, CLK high or low

7.7

6.7

ns

↑

A, B, C, or D

10

8

t

*

Setup time before CLK

↑

ENP or ENT

10

8

ns

tsu*

Setup time before CLK

↑

LOAD

10

8

ns

U/D

14

11

th*

Hold time, data after CLK

↑

2

0

ns

TA

Operating free-air temperature

–55

125

0

70

°C

* On products compliant to MIL-STD-883, Class B, this parameter is based on characterization data but is not production tested.