CD74FCT273 datasheet(4/7 Pages) TI

4 / 7 page

Switching Speciﬁcations Over Operating Range FCT Series tr, tf = 2.5ns, CL = 50pF, RL (Figure 4) (Note 6)

PARAMETER

SYMBOL

VCC (V)

25oC0oC TO 70oC

UNITS

TYP

MIN

MAX

Propagation Delays

CP to Qn

tPLH, tPHL

572

MR to Qn

tPLH, tPHL

582

Power Dissipation Capacitance

CPD

(Note 7)

-36-

Input Capacitance

---

NOTES:

6. 5V: Min is at 5.25V for 0oC to 70oC, Max is at 4.75V for 0oC to 70oC, Typ is at 5V.

7. CPD, measured per flip-flop, is used to determine the dynamic power consumption.

PD (per package) = VCC ICC + Σ(VCC

2 f

I CPD + VO

2 f

O CL + VCC ∆ICC D) where:

VCC = supply voltage

∆ICC = flow through current x unit load

CL = output load capacitance

D = duty cycle of input high

fO = output frequency

fI = input frequency

Prerequisite for Switching (Note 8)

PARAMETER

SYMBOL

VCC (V)

25oC0oC TO 70oC

UNITS

TYP

MIN

MAX

Data to CP Setup Time

tSU

5-3-

Hold Time

5-2-

Removal Time, MR to CP

tREM

5-4-

MR Pulse Width

5-7-

CP Pulse Width

5-7-

CP Frequency

fMAX

MHz

NOTE:

8. 5V: Minimum is at 4.75V for 0oC to 70oC, Typical is at 5V.

CD74FCT273

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