CD74FCT543 datasheet(4/6 Pages) TI

4 / 6 page

8-4

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

PARAMETER

SYMBOL

VCC (V)

25oC0oC TO 70oC

UNITS

TYP

MIN

TYP

MAX

Propagation Delays

↔ Bn

tPLH, tPHL

6.4

2.5

8.5

LEBA to An or LEAB to Bn

tPLH, tPHL

9.4

2.5

12.5

CEBA or CEAB to An or Bn

tPLZ, tPHZ

6.8

tPZL, tPZH

Power Dissipation Capacitance

CPD

(Note 6)

Minimum (Valley) VOHV During Switching of

Other Outputs (Output Under Test Not Switching)

VOHV

0.5

Maximum (Peak) VOLP During Switching of

Other Outputs (Output Under Test Not Switching)

VOLP

---

Input Capacitance

Input/Output Capacitance

CI/O

NOTE:

6. 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

PARAMETER

SYMBOL

VCC (V)

25oC0oC TO 70oC

UNITS

TYP

MIN

MAX

Data to Latch Enable Setup Time

tSU

(Note 7)

-3-

Data to Latch Enable Hold Time

5-2-

Latch Enable Pulse Width

5-9-

NOTE:

7. 5V: Minimum is at 4.75V for 0oC to 70oC, Typical is at 5V.

CD74FCT543

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