74LCX00

Electrical characteristics

Doc ID 4972 Rev 7

7/16

Table 8.

AC electrical characteristics

Symbol

Parameter

Test condition

Value

Unit

VCC

(V)

CL

(pF)

RL

(

Ω)

ts = tr

(ns)

-40 to 85 °C

Min.

Max.

tPLH tPHL

Propagation delay

time

2.7

50

500

2.5

5.1

ns

3.0 to 3.6

1.0

4.3

tOSLH

tOSHL

Output-to-output

skew time(1), (2)

1.

Skew is defined as the absolute value of the difference between the actual propagation delay for any two

outputs of the same device switching in the same direction, either HIGH or LOW (tOSLH = | tPLHm - tPLHn|,

tOSHL = | tPHLm - tPHLn|).

2.

Parameter guaranteed by design.

3.0 to 3.6

50

500

2.5

1.0

ns

Table 9.

Capacitive characteristics

Symbol

Parameter

Test condition

Value

Unit

VCC

(V)

TA = 25 °C

Min.

Typ.

Max.

CIN

Input capacitance

3.3

VIN = 0 to VCC

6pF

CPD

Power dissipation

capacitance(1)

1.

CPD is defined as the value of the IC’s internal equivalent capacitance which is calculated from the

operating current consumption without load. (Refer to Section 5: Test circuit). Average operating current

can be obtained by the following equation. ICC(opr) = CPD x VCC x fIN + ICC/4 (per gate).

3.3

fIN = 10 MHz

VIN = 0 or VCC

35

pF