FST16233 Просмотр технического описания (PDF) - Fairchild Semiconductor

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FST16233

16-Bit to 32-Bit Multiplexer/Demultiplexer Bus Switch

Fairchild Semiconductor 

AC Electrical Characteristics

TA = −40 °C to +85 °C,

Symbol

Parameter

CL = 50pF, RU= RD = 500Ω

VCC = 4.5 − 5.5V

VCC = 4.0V

Units Conditions

Figure No.

Min

Max

Min

Max

tPHL, tPLH

A or B, to B or A (Note 6)

0.25

0.25

ns VI = OPEN

Figure 1

Figure 2

tPHL,tPLH

SEL to A

1.5

6.1

6.8

ns VI = OPEN

Figure 1

Figure 2

tPZH, tPZL

Output Enable Time,

SEL or TEST to B

1.0

6.5

7.2

ns VI = 7V for tPZL,

Figure 1

VI = OPEN for tPZH

Figure 2

tPHZ, tPLZ

Output Disable Time,

SEL or TEST to B

1.5

7.8

8.5

ns VI = 7V for tPLZ,

Figure 1

VI = OPEN for tPHZ

Figure 2

Note 6: This parameter is guaranteed by design but is not tested. The bus switch contributes no propagation delay other than the RC delay of the typical On

resistance of the switch and the 50pF load capacitance, when driven by an ideal voltage source (zero output impedance).

Capacitance (Note 7)

Symbol Parameter

Typ

CIN

Control pin Input Capacitance

4

CI/O

Input/Output Capacitance

6

Note 7: TA = +25°C, f = 1 MHz, Capacitance is characterized but not tested.

AC Loading and Waveforms

Max

Units

Conditions

pF

VCC = 5.0V

pF

VCC = 5.0V, Switch OFF

Note: Input driven by 50 Ω source terminated in 50 Ω

Note: CL includes load and stray capacitance

Note: Input PRR = 1.0 MHz, tW = 500 ns

FIGURE 1. AC Test Circuit

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FIGURE 2. AC Waveforms

4

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