74AC541M Ver la hoja de datos (PDF) - STMicroelectronics

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74AC541M

OCTAL BUS BUFFER WITH 3 STATE OUTPUTS (NON INVERTED)

STMicroelectronics 

74AC541

AC ELECTRICAL CHARACTERISTICS (CL = 50 pF, RL = 500 Ω, Input tr = tf =3 ns)

Symb ol

Parameter

tPLH Propagation Delay Time

tPHL

tPZL Output Enable Time

tPZH

tPLZ Output Disable Time

tPHZ

(*) Voltage range is 3.3V ± 0.3V

(**) Voltage range is 5V ± 0.5V

T est Con ditio n

VCC

(V)

3.3(*)

5.0(**)

3.3(*)

5.0(**)

3.3(*)

5.0(**)

Valu e

TA = 25 oC

-40 to 85 oC

Min. T yp. Max. Min. Max.

1.5 5

8 1.5 9

1.5 4 6.5 1.5 7

1.5 7 10.5 1.5 11.5

1.5 5

8 1.5 8.5

1.5 7 10.5 1.5 11.5

1.5 6

9 1.5 9.5

Unit

ns

ns

ns

CAPACITIVE CHARACTERISTICS

Sy mbo l

Parameter

Test Con dition s

VCC

(V)

Va l u e

TA = 25 oC

-40 to 85 oC

Min. Typ. Max. Min. Max.

Unit

CIN Input Capacitance

5.0

4

pF

COUT Output Capacitance

5.0

8

pF

CPD Power Dissipation

5.0

Capacitance (note 1)

21

pF

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

Test Circuit). Average operating current can be obtained by the following equation. ICC(opr) = CPD • VCC • fIN + ICC/8 (per circuit)

TEST CIRCUIT

TEST

tPLH, tPHL

tPZL, tPLZ

tPZH, tPHZ

CL = 50 pF or equivalent (includes jigand probe capacitance)

RL = R1 = 500Ω orequivalent

RT = ZOUT of pulse generator (typically 50Ω)

4/8

SW IT CH

Open

2VCC

Open

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