MC74LCX244_07 Datasheet, PDF(5/9 Page) ON Semiconductor – Low−Voltage CMOS Octal Buffer With 5 V−Tolerant Inputs and Outputs (3−State, Non−Inverting)

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MC74LCX244_07 Datasheet, PDF (5/9 Pages) ON Semiconductor – Low−Voltage CMOS Octal Buffer With 5 V−Tolerant Inputs and Outputs (3−State, Non−Inverting)

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MC74LCX244

DYNAMIC SWITCHING CHARACTERISTICS

Symbol

Characteristic

Condition

TA = +25Â°C

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

0.8

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

0.6

VOLV

Dynamic LOW Valley Voltage (Note 4) VCC = 3.3 V, CL = 50 pF, VIH = 3.3 V, VIL = 0 V

â0.8

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

â0.6

4. Number of outputs defined as ânâ. Measured with ânâ1â outputs switching from HIGHâtoâLOW or LOWâtoâHIGH. The remaining output is

measured in the LOW state.

CAPACITIVE CHARACTERISTICS

Symbol

Parameter

CIN

COUT

CPD

Input Capacitance

Output Capacitance

Power Dissipation Capacitance

Condition

VCC = 3.3 V, VI = 0 V or VCC

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

Typical

Unit

1Dn, 2Dn

1On, 2On

VCC

Vmi

tPLH

Vmo

tPHL

VOH

Vmo

VOL

WAVEFORM 1 â PROPAGATION DELAYS

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

1OE, 2OE

1On, 2On

Vmi

tPZH

tPHZ

Vmo

VCC

VOH â 0.3 V

â0V

tPZL

tPLZ

â 3.0 V

Vmo

VOL + 0.3 V

GND

WAVEFORM 2 â OUTPUT ENABLE AND DISABLE TIMES

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

Figure 3. AC Waveforms

Symbol 3.3 V Â± 0.3 V

Vmi

1.5 V

Vmo

1.5 V

VHZ

VOL + 0.3 V

VLZ

VOH â 0.3 V

VCC

2.7 V

1.5 V

VOL + 0.3 V

VOH â 0.3 V

2.5 V Â± 0.2 V

VCC/2

VOL + 0.15 V

VOH â 015 V

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