MC74LCX244(2016) 查看數據表（PDF） - ON Semiconductor

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MC74LCX244
(Rev.:2016)

Low-Voltage CMOS Octal Buffer

ON Semiconductor 

CAPACITIVE CHARACTERISTICS

Symbol

Parameter

CIN

COUT

CPD

Input Capacitance

Output Capacitance

Power Dissipation Capacitance

MC74LCX244

Condition

VCC = 3.3 V, VI = 0 V or VCC

VCC = 3.3 V, VI = 0 V or VCC

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

Typical

7

8

25

1Dn, 2Dn

1On, 2On

VCC

Vmi

Vmi

tPLH

Vmo

0V

tPHL

VOH

Vmo

VOL

WAVEFORM 1 − PROPAGATION DELAYS

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

Units

pF

pF

pF

1OE, 2OE

1On, 2On

1On, 2On

Vmi

Vmi

tPZH

tPHZ

Vmo

VCC

0V

VCC

VOH - 0.3 V

≈0V

tPZL

tPLZ

≈ 3.0 V

Vmo

VOL + 0.3 V

GND

WAVEFORM 2 − OUTPUT ENABLE AND DISABLE TIMES

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

Figure 3. AC Waveforms

Symbol

Vmi

Vmo

VHZ

VLZ

3.3 V ± 0.3 V

1.5 V

1.5 V

VOL + 0.3 V

VOH − 0.3 V

VCC

2.7 V

1.5 V

1.5 V

VOL + 0.3 V

VOH − 0.3 V

2.5 V ± 0.2 V

VCC/2

VCC/2

VOL + 0.15 V

VOH − 015 V

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