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IN74ACT643

OCTAL 3-STATE BUS TRANSCEIVER

Integral Corp. 

IN74ACT643

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, A to B or B to A 1.5 8.0 1.0 9.0

ns

(Figure 1)

tPHL Propagation Delay, A to B or B to A 1.5 8.0 1.0 9.0

ns

(Figure 1)

tPZH Propagation Delay, Direction or Output 1.5 10.5 1.0 11.5 ns

Enable to A or B (Figure 2)

tPZL Propagation Delay, Direction or Output 1.5 10.5 1.0 11.5 ns

Enable to A or B (Figure 2)

tPHZ Propagation Delay, Direction or Output 1.5 10.5 1.0 11.5 ns

Enable to A or B (Figure 2)

tPLZ Propagation Delay, Direction or Output 1.5 10.5 1.0 11.5 ns

Enable to A or B (Figure 2)

CIN Maximum Input Capacitance

4.5

4.5

pF

COUT Maximum Tree-State I/O Capacitance

15

(Output in High-Impedance State0

15

pF

CPD Power Dissipation Capacitance

Typical @25°C,VCC=5.0 V

45

pF

Figure 1. Switching Waveforms

Figure 2. Switching Waveforms

4

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