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FSTUD16211

24-Bit Bus Switch with .2V Undershoot Protection and Level Shifting

Fairchild Semiconductor 

Absolute Maximum Ratings(Note 2)

Supply Voltage (VCC)

−0.5V to +7.0V

DC Switch Voltage (VS) (Note 3)

−2.0V to +7.0V

DC Input Control Pin Voltage (VIN)(Note 4) −0.5V to +7.0V

DC Input Diode Current (lIK) VIN < 0V

−50 mA

DC Output (IOUT)

128 mA

DC VCC/GND Current (ICC/IGND)

+/− 100 mA

Storage Temperature Range (TSTG)

−65°C to +150 °C

Recommended Operating

Conditions (Note 5)

Power Supply Operating (VCC)

Input Voltage (VIN)

Output Voltage (VOUT)

Input Rise and Fall Time (tr, tf)

Switch Control Input

4.5V to 5.5V

0V to 5.5V

0V to 5.5V

0 ns/V to 5 ns/V

Switch I/O

0 ns/V to DC

Free Air Operating Temperature (TA) -40 °C to +85 °C

Note 2: The “Absolute Maximum Ratings” are those values beyond which

the safety of the device cannot be guaranteed. The device should not be

operated at these limits. The parametric values defined in the Electrical

Characteristics tables are not guaranteed at the absolute maximum rating.

The “Recommended Operating Conditions” table will define the conditions

for actual device operation.

Note 3: VS is the voltage observed/applied at either A or B Ports across the

switch.

Note 4: The input and output negative voltage ratings may be exceeded if

the input and output diode current ratings are observed.

Note 5: Unused control inputs must be held HIGH or LOW. They may not

float.

DC Electrical Characteristics

Symbol

Parameter

VCC

(V)

TA = −40 °C to +85 °C

Min

Typ

(Note 6)

Max

Units

Conditions

VIK

Clamp Diode Voltage

VIH

HIGH Level Input Voltage

VIL

LOW Level Input Voltage

VOH

HIGH Level

II

Input Leakage Current

4.5

4.5–5.5

4.5–5.5

4.5–5.5

5.5

0

IOZ

OFF-STATE Leakage Current

5.5

RON

Switch On Resistance

4.5

(Note 7)

4.5

4.5

ICC

Quiescent Supply Current

5.5

∆ ICC

Increase in ICC per Input

5.5

VIKU

Voltage Undershoot

5.5

Note 6: Typical values are at VCC = 5.0V and TA= +25°C

−1.2

2.0

0.8

See Figure 4

±1.0

10

±1.0

4

7

4

7

35

50

1.5

10

2.5

−2.0

V

IIN = −18 mA

V

V

V

µA

0 ≤ VIN ≤ 5.5V

µA

VIN = 5.5V

µA

0 ≤ A, B ≤ VCC

Ω

VIN = 0V, IIN = 64 mA

Ω

VIN = 0V, IIN = 30 mA

Ω

VIN = 2.4V, IIN = 15 mA

mA

OE1 = OE2 = GND

VIN = VCC or GND, IOUT = 0

µA

OE1 = OE2 = VCC

VIN = VCC or GND, IOUT = 0

One Input at 3.4V

mA

Other Inputs at VCC or GND

V

0.0 mA ≥ IIN ≥ −50 mA

OE1, 2 = 5.5V

Note 7: Measured by the voltage drop between A and B pins at the indicated current through the switch. On Resistance is determined by the lower of the

voltages on the two (A or B) pins.

3

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