4.6 Switching Specifications

Input tr, tf = 3ns, CL = 50pF (Worst Case)

PARAMETER

SYMBOL

VCC (V)

-40°C TO 85°C

-55°C TO 125°C

UNIT

MIN

TYP

MAX

MIN

TYP

MAX

AC TYPES

Propagation Delay, An or Bn to

COUT

CIN to Sn

CIN to COUT

tPLH, tPHL

1.5

-

-

199

-

-

219

ns

3.3(1)

6.3

-

22.4

6.2

-

24.6

ns

5(2)

4.5

-

16

4.4

-

17.6

ns

Propagation Delay, An or Bn to

Sn

tPLH, tPHL

1.5

-

-

207

-

-

228

ns

3.3

6.6

-

23.2

6.4

-

25.5

ns

5

4.7

-

16.5

4.6

-

18.2

ns

Input Capacitance

CI

-

-

-

10

-

-

10

pF

Power Dissipation Capacitance

CPD (3)

-

-

120

-

-

120

-

pF

ACT TYPES

Propagation Delay, An or Bn to

COUT

CIN to Sn

CIN to COUT

tPLH, tPHL

5(2)

4.5

-

16

2.7

-

17.6

ns

Propagation Delay, An or Bn to

Sn

tPLH, tPHL

5

4.7

-

16.5

3.3

-

18.2

ns

Input Capacitance

CI

-

-

-

10

-

-

10

pF

Power Dissipation Capacitance

CPD (3)

-

-

120

-

-

120

-

pF

(1)

3.3V Min is at 3.6V, Max is at 3V.

(2)

5V Min is at 5.5V, Max is at 4.5V.

(3)

CPD is used to determine the dynamic power consumption per function.

Note

AC: PD = VCC 2 fi (CPD + CL)

ACT: PD = VCC 2 fi (CPD + CL) + VCC ΔICC where fi = input frequency, CL = output load capacitance,

VCC = supply voltage.

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CD54AC283, CD74AC283, CD54ACT283, CD74ACT283

SCHS251E – NOVEMBER 1998 – REVISED JANUARY 2025

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