74VCX162244TTR 查看數據表（PDF） - STMicroelectronics

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74VCX162244TTR

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

STMicroelectronics 

74VCX162244

CAPACITIVE CHARACTERISTICS

Test Condition

Value

Symbol

Parameter

VCC

(V)

TA = 25 °C

Unit

Min. Typ. Max.

CIN

Input Capacitance

1.8, 2.5 or 3.3 VIN = 0 or VCC

6

pF

COUT Output Capacitance

1.8, 2.5 or 3.3 VIN = 0 or VCC

7

pF

CPD Power Dissipation Capacitance 1.8, 2.5 or 3.3 fIN = 10MHz

20

pF

(note 1)

VIN = 0 or VCC

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 x VCC x fIN + ICC/16 (per

circuit)

TEST CIRCUIT

TEST

tPLH, tPHL

tPZL, tPLZ (VCC = 3.0 to 3.6V)

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

tPZH, tPHZ

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

VIH

VM

VX

VY

3.0 to3.6V

2.7V

1.5V

VOL + 0.3V

VOH - 0.3V

VCC

2.3 to 2.7V

VCC

VCC/2

VOL + 0.15V

VOH - 0.15V

SWITCH

Open

6V

2VCC

GND

1.8V

VCC

VCC/2

VOL + 0.15V

VOH - 0.15V

7/11

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