74VCX16240 datasheet(7/11 Pages) STMICROELECTRONICS

Teilenummer	74VCX16240

Bauteilbeschribung	LOW VOLTAGE CMOS 16-BIT BUS BUFFER (3-STATE INV.) WITH 3.6V TOLERANT INPUTS AND OUTPUTS

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74VCX16240

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CAPACITIVE CHARACTERISTICS

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 xVCC xfIN +ICC/16 (per

circuit)

TEST CIRCUIT

CL = 30 pF or equivalent (includes jig and probe capacitance)

RL =R1 = 500Ω or equivalent

RT =ZOUT of pulse generator (typically 50Ω)

WAVEFORM SYMBOL VALUES

Symbol

Parameter

Test Condition

Value

Unit

VCC

(V)

TA =25°C

Min.

Typ.

Max.

CIN

Input Capacitance

1.8, 2.5 or 3.3

VIN = 0 or VCC

6pF

COUT

Output Capacitance

1.8, 2.5 or 3.3

VIN = 0 or VCC

7pF

CPD

Power Dissipation Capacitance

(note 1)

1.8, 2.5 or 3.3

fIN = 10MHz

VIN = 0 or VCC

20

pF

TEST

SWITCH

tPLH,tPHL

Open

tPZL,tPLZ (VCC = 3.0 to 3.6V)

6V

tPZL,tPLZ (VCC = 2.3 to 2.7V or 1.8V)

2VCC

tPZH,tPHZ

GND

Symbol

VCC

3.0 to3.6V

2.3 to 2.7V

1.8V

VIH

2.7V

VCC

VM

1.5V

VCC/2

VX

VOL + 0.3V

VOL + 0.15V

VY

VOH - 0.3V

VOH - 0.15V

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