74VCX16240 datasheet(7/11 Pages) STMICROELECTRONICS

Part #	74VCX16240

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

PDF	11 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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7 / 11 page

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

TEST

SWITCH

tPLH,tPHL

Open

tPZL,tPLZ (VCC = 3.0 to 3.6V)

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

1.5V

VCC/2

VOL + 0.3V

VOL + 0.15V

VOH - 0.3V

VOH - 0.15V

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