7-1417

CD40182BMS

FIGURE 9. 16-BIT TWO-LEVEL LOOK-AHEAD ALU

FIGURE 6. TYPICAL TRANSITION TIME AS A FUNCTION OF

LOAD CAPACITANCE

FIGURE 7. TYPICAL PROPAGATION DELAY TIME AS A FUNC-

TION OF LOAD CAPACITANCE (P, G IN TO P, G

OUT AND CARRY-OUTS)

FIGURE 8. TYPICAL POWER DISSIPATION AS A FUNCTION OF INPUT FREQUENCY

LOAD CAPACITANCE (CL) (pF)

0

40

60

80

100

20

0

50

100

150

200

SUPPLY VOLTAGE (VDD) = 5V

10V

15V

LOAD CAPACITANCE (CL) (pF)

0

SUPPLY VOLTAGE (VDD) = 5V

10V

15V

50

10

20

30

40

50

60

70

80

90

100

100

150

200

250

300

350

10V

5V

10V

8

6

4

2

INPUT FREQUENCY (fI) (kHz)

110

8

6

4

2

8

6

4

2

8

6

4

2

8

6

4

2

CL = 15pF

CL = 50pF

SUPPLY VOLTAGE (VDD) = 15V

8

6

4

28

6

4

28

6

4

2

CARRY

IN

Cn

GP

Cn

G0

P0

Cn

GP

Cn

GP

Cn

GP

G1

P1

G2

P2

G3

P3

Cn + x

Cn + y

Cn + z

GP

LOOK-AHEAD

OUTPUTS

CARRY

OUT

(4) CD40181BMS

CD40182BMS