FST16209 View Datasheet(PDF) - Fairchild Semiconductor

Part Name

Description

Manufacturer

FST16209

18-Bit Bus Exchange Switch

Fairchild Semiconductor 

AC Electrical Characteristics

Symbol

Parameter

TA 40 qC to 85 qC,

CL 50pF, RU RD 500:

VCC 4.5  5.5V

VCC 4.0V

Units

Conditions

Figure

No.

Min

Max

Min

Max

tPHL, tPLH

Propagation Delay Bus to Bus

(Note 6)

0.25

0.25

ns

VI OPEN

Figures

1, 2

tPHL, tPLH

Propagation Delay S to Bus

1.5

7.0

7.0

ns

VI OPEN

Figures

1, 2

tPZH, tPZL

Output Enable Time, S to A or B

1.5

7.5

8.0

ns

VI 7V for tPZL

Figures

VI OPEN for tPZH

1, 2

tPHZ, tPLZ

Output Disable Time S to A or B

1.0

8.5

9.0

ns

VI 7V for tPLZ

Figures

VI OPEN for tPHZ

1, 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

CIN

CI/O

Parameter

Control pin Input Capacitance

Input/Output Capacitance

Typ

Max

3

10

Note 7: TA 25qC, f 1 MHz, Capacitance is characterized but not tested.

Units

pF

pF

Conditions

VCC 5.0V

VCC 5.0V,

S0, S1, and S2

GND

AC Loading and Waveforms

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

Note: CL includes load and stray capacitance

Note: Input PRR 1.0 MHz, tW 500 ns

FIGURE 1. AC Test Circuit

FIGURE 2. AC Waveforms

3

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