NC7WB3125 Просмотр технического описания (PDF) - ON Semiconductor

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NC7WB3125

2-Bit Low Power Bus Switch

ON Semiconductor 

AC Electrical Characteristics

Symbol

Parameter

tPHL,

tPLH

tPZL,

tPZH

tPLZ,

tPHZ

Propagation Delay Bus-to-Bus

(Note 6)

Output Enable Time

Output Disable Time

VCC

(V)

4.0 to 5.5

4.5 to 5.5

4.0

4.5 to 5.5

4.0

TA 40qC to 85qC,

CL 50 pF, RU RD 500:

Min

Typ

Max

0.25

0.8

2.5

4.2

0.8

3.0

4.6

0.8

3.1

4.8

0.8

2.9

4.4

Units

Conditions

ns

VI OPEN

ns

VI 7V for tPZL

VI 0V for tPZH

ns

VI 7V for tPLZ

VI 0V for tPHZ

Figure

Number

Figures

1, 2

Figures

1, 2

Figures

1Figure 2

Note 6: This parameter is guaranteed by design. The bus switch contributes no propagation delay other than the RC delay of the typical On Resistance of the switch and the 50

pF load capacitance, when driven by an ideal voltage source (zero output impedance). The specified limit is calculated on this basis.

Capacitance

Symbol

CIN

CI/O (OFF)

CI/O (ON)

Parameter

Control Pin Input Capacitance

Port Off Capacitance

Switch ON Capacitance

AC Loading and Waveforms

Typ

2.5

6.0

12.0

Max

Units

pF

pF

pF

Conditions

VCC 0V

VCC 5.0V OE

VCC 5.0V, OE 0V

Input driven by 50: source terminated in 50:

CL includes load and stray capacitance

Input PRR 1.0 MHz; tW 500 ns

FIGURE 1. AC Test Circuit

FIGURE 2. AC Waveforms

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