MC74LCX257_05 Datasheet, PDF(5/8 Page) ON Semiconductor – Low-Voltage CMOS Quad 2-Input Multiplexer With 5.0 V−Tolerant Inputs and Outputs (3−State, Non−Inverting)

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MC74LCX257_05 Datasheet, PDF (5/8 Pages) ON Semiconductor – Low-Voltage CMOS Quad 2-Input Multiplexer With 5.0 V−Tolerant Inputs and Outputs (3−State, Non−Inverting)

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MC74LCX257

DYNAMIC SWITCHING CHARACTERISTICS

Symbol

Characteristic

Condition

TA = +25Â°C

Min Typ Max Unit

VOLP

Dynamic LOW Peak Voltage

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

0.8

(Note 4)

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

0.6

VOLV

Dynamic LOW Valley Voltage

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

â0.8

(Note 4)

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

Input Capacitance

CI/O

Input/Output Capacitance

CPD

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

In, S Vmi

VCC

Vmi

tPLH

tPHL

VOH

Vmo

VOL

WAVEFORM 1 â NONâINVERTING PROPAGATION DELAYS

tR = tF = 2.5 ns, 10% to 90%; f = 1.0 MHz; tW = 500 ns

S Vmi

VCC

Vmi

tPLH

Vmo

tPHL

Vmo

VOH

VOL

WAVEFORM 2 â INVERTING PROPAGATION DELAYS

tR = tF = 2.5 ns, 10% to 90%; f = 1.0 MHz; tW = 500 ns

Vmi

tPZH

tPHZ

Vmo

VCC

VOH â 0.3

â0V

tPZL

tPLZ

â 3.0V

Vmo

VOL + 0.3 V

GND

WAVEFORM 3 â OUTPUT ENABLE AND DISABLE TIMES

tR = tF = 2.5 ns, 10% to 90%; f = 1.0 MHz; tW = 500 ns

Symbol

Vmi

Vmo

VHZ

VLZ

3.3 V + 0.3 V

1.5 V

VOL + 0.3 V

VOH â 0.3 V

Vcc

2.7 V

1.5 V

VOL + 0.3 V

VOH â 0.3 V

Figure 3. AC Waveforms

2.5 V + 0.2 V

Vcc/2

VOL + 0.15 V

VOH â 0.15 V

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