IN74ACT257 Просмотр технического описания (PDF) - Integral Corp.

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IN74ACT257

QUAD 2-INPUT DATA SELECTOR/MULTIPLEXER WITH 3-STATE OUTPUTS

Integral Corp. 

IN74ACT257

AC ELECTRICAL CHARACTERISTICS(VCC=5.0 V ± 10%, CL=50pF, Input tr=tf=3.0 ns)

Guaranteed Limits

Symbol

Parameter

25 °C

-40°C to

Unit

85°C

Min Max Min Max

tPLH Propagation Delay, Nibble A or B to Output Y 1.5 7.0 1.0 7.5

ns

(Figure 1)

tPHL Propagation Delay, Nibble A or B to Output Y 2.0 7.5 1.5 8.5

ns

(Figure 1)

tPLH Propagation Delay, Select to Output Y 2.0 9.5 1.5 10.5

ns

(Figure 2)

tPHL Propagation Delay, Select to Output Y 2.5 10.5 2.0 11.5

ns

(Figure 2)

tPZH Propagation Delay, Output Enable to Output Y 2.0 8.0 1.5 9.0

ns

(Figure 3)

tPZL Propagation Delay, Output Enable to Output Y 2.0 8.0 1.5 9.0

ns

(Figure 3)

tPHZ Propagation Delay, Output Enable to Output Y 2.5 9.0 1.5 10.0

ns

(Figure 3)

tPLZ Propagation Delay, Output Enable to Output Y 2.0 7.5 1.5 8.5

ns

(Figure 3)

CIN Maximum Input Capacitance

4.5

4.5

pF

CPD Power Dissipation Capacitance

Typical @25°C,VCC=5.0 V

50

pF

Figure 1. Switching Waveforms

Figure 2. Switching Waveforms

4

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