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IN74ACT257

Quad 2-Input Data Selector/Multiplexer with 3-State Outputs High-Speed Silicon-Gate CMOS

IK Semicon Co., Ltd 

IN74ACT257

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

Symbol

Parameter

tPLH Propagation Delay, Nibble A or B to Output Y

(Figure 1)

tPHL Propagation Delay, Nibble A or B to Output Y

(Figure 1)

tPLH Propagation Delay, Select to Output Y

(Figure 2)

tPHL Propagation Delay, Select to Output Y

(Figure 2)

tPZH Propagation Delay, Output Enable to Output Y

(Figure 3)

tPZL Propagation Delay, Output Enable to Output Y

(Figure 3)

tPHZ Propagation Delay, Output Enable to Output Y

(Figure 3)

tPLZ Propagation Delay, Output Enable to Output Y

(Figure 3)

CIN Maximum Input Capacitance

Guaranteed Limits

25 °C

-40°C to 85°C Unit

Min Max Min Max

1.5 7.0 1.0 7.5

ns

2.0 7.5 1.5 8.5

ns

2.0 9.5 1.5 10.5

ns

2.5 10.5 2.0 11.5

ns

2.0 8.0 1.5 9.0

ns

2.0 8.0 1.5 9.0

ns

2.5 9.0 1.5 10.0

ns

2.0 7.5 1.5 8.5

ns

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

Rev. 00

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