SN54ALS873B, SN54AS873A, SN74ALS873B, SN74AS873A

DUAL 4-BIT D-TYPE LATCHES

WITH 3-STATE OUTPUTS

SDAS036D – APRIL 1982 – REVISED AUGUST 1995

2

POST OFFICE BOX 655303

logic diagram (each quad latch, positive logic)

2OE

1CLR

1OE

EN

2

C1

23

1LE

1D

3

1D1

4

1D2

5

1D3

6

1D4

1Q1

22

1Q2

21

1Q3

20

1Q4

19

C

1

EN

11

C1

14

2LE

1D

7

2D1

8

2D2

9

2D3

10

2D4

2Q1

18

2Q2

17

2Q3

16

2Q4

15

C

13

2CLR

R

C1

1D

D1

Q1

R

C1

1D

D2

Q2

R

C1

1D

D3

Q3

R

C1

1D

D4

Q4

OE

LE

CLR

† This symbol is in accordance with ANSI/IEEE Std 91-1984 and

IEC Publication 617-12.

Pin numbers shown are for the DW, JT, and NT packages.

7 V

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

7 V

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

Voltage applied to a disabled 3-state output

5.5 V

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

– 55

°C to 125°C

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

SN74ALS873B

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

SN54ALS873B

SN74ALS873B

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

–1

– 2.6

mA

IOL

Low-level output current

12

24

mA

TA

Operating free-air temperature

–55

125

0

70

°C