SN54ALS193A, SN74ALS193A

SYNCHRONOUS 4BIT UP/DOWN BINARY COUNTERS

WITH DUAL CLOCK AND CLEAR

SDAS211C − DECEMBER 1982 − REVISED JULY 1996

5

POST OFFICE BOX 655303

POST OFFICE BOX 1443

7 V

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

7 V

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

−55

°C to 125°C

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

SN74ALS193A

0

°C to 70°C

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

−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

SN54ALS193A

SN74ALS193A

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

0.7

0.8

V

IOH

High-level output current

− 0.4

− 0.4

mA

IOL

Low-level output current

4

8

mA

fclock

Clock frequency

0

20

0

30

MHz

CLR high

10

10

tw

Pulse duration

LOAD low

25

20

ns

tw

Pulse duration

UP or DOWN high or low

30

16.5

ns

Data before LOAD

↑

25

20

tsu

Setup time

CLR inactive before UP or DOWN

20

20

ns

tsu

Setup time

LOAD inactive before UP or DOWN

20

20

ns

Data after LOAD

↑

5

5

th

Hold time

UP high after DOWN

↑

5

0

ns

th

Hold time

DOWN high after UP

↑

5

0

ns

TA

Operating free-air temperature

−55

125

0

70

°C

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

otherwise noted)

PARAMETER

TEST CONDITIONS

SN54ALS193A

SN74ALS193A

UNIT

PARAMETER

TEST CONDITIONS

MIN

TYP‡

MAX

MIN

TYP‡

MAX

UNIT

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 = 4.5 V

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

0.35

0.1

mA

IIH

VCC = 5.5 V,

VI = 2.7 V

20

20

µA

IIL

UP or DOWN

VCC = 5.5 V,

VI = 0.4 V

− 0.2

− 0.2

mA

IIL

All others

VCC = 5.5 V,

VI = 0.4 V

− 0.1

− 0.1

mA

IO§

VCC = 5.5 V,

VO = 2.25 V

−20

−112

−30

−112

mA

ICC

VCC = 5.5 V,

See Note 1

12

22

12

22

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 1: ICC is measured with the clear and load inputs grounded and all other inputs at 4.5 V.