MC74LCX244MELG datasheet(5/9 Pages) ONSEMI

Part #	MC74LCX244MELG

Description	Low?뭋oltage CMOS Octal Buffer With 5 V?뭈olerant Inputs and Outputs (3?뭆tate, Non?묲nverting)

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MC74LCX244

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DYNAMIC SWITCHING CHARACTERISTICS

TA = +25°C

Symbol

Characteristic

Condition

Min

Typ

Max

Unit

VOLP

Dynamic LOW Peak Voltage (Note 4)

VCC = 3.3 V, CL = 50 pF, VIH = 3.3 V, VIL = 0 V

VCC = 2.5 V, CL = 30 pF, VIH = 2.5 V, VIL = 0 V

0.8

0.6

V

VOLV

Dynamic LOW Valley Voltage (Note 4)

VCC = 3.3 V, CL = 50 pF, VIH = 3.3 V, VIL = 0 V

VCC = 2.5 V, CL = 30 pF, VIH = 2.5 V, VIL = 0 V

−0.8

−0.6

V

4. Number of outputs defined as “n”. Measured with “n−1” outputs switching from HIGH−to−LOW or LOW−to−HIGH. The remaining output is

measured in the LOW state.

CAPACITIVE CHARACTERISTICS

Symbol

Parameter

Condition

Typical

Unit

CIN

Input Capacitance

VCC = 3.3 V, VI = 0 V or VCC

7

pF

COUT

Output Capacitance

VCC = 3.3 V, VI = 0 V or VCC

8

pF

CPD

Power Dissipation Capacitance

10 MHz, VCC = 3.3 V, VI = 0 V or VCC

25

pF

VCC

0 V

VOH

VOL

1Dn, 2Dn

1On, 2On

tPHL

tPLH

VCC

0 V

≈ 0 V

1OE, 2OE

1On, 2On

tPZH

≈ 3.0 V

tPHZ

tPZL

tPLZ

1On, 2On

Vmo

Vmi

Vmo

Figure 3. AC Waveforms

Vmi

VCC

VOH − 0.3 V

VOL + 0.3 V

GND

WAVEFORM 1 − PROPAGATION DELAYS

tR = tF = 2.5 ns, 10% to 90%; f = 1 MHz; tW = 500 ns

WAVEFORM 2 − OUTPUT ENABLE AND DISABLE TIMES

tR = tF = 2.5 ns, 10% to 90%; f = 1 MHz; tW = 500 ns

Symbol

VCC

3.3 V

± 0.3 V

2.7 V

2.5 V

± 0.2 V

Vmi

1.5 V

VCC/2

Vmo

1.5 V

VCC/2

VHZ

VOL + 0.3 V

VOL + 0.15 V

VLZ

VOH − 0.3 V

VOH − 015 V

Vmi

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