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FSTU3253M

Dual 4:1 Multiplexer/Demultiplexer Bus Switch with −2V Undershoot Protection

Fairchild Semiconductor 

Absolute Maximum Ratings(Note 1)

Supply Voltage (VCC)

DC Switch Voltage (VS)

DC Input Voltage (VIN) (Note 2)

DC Input Diode Current (lIK) VIN < 0V

DC Output (IOUT) Sink Current

DC VCC/GND Current (ICC/IGND)

Storage Temperature Range (TSTG)

−0.5V to +7.0V

−2.0V to +7.0V

−0.5V to +7.0V

−50 mA

128 mA

+/− 100 mA

−65°C to +150 °C

Recommended Operating

Conditions (Note 3)

Power Supply Operating (VCC)

Input Voltage (VIN)

Output Voltage (VOUT)

Input Rise and Fall Time (tr, tf)

Switch Control Input

4.0V 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 1: 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 tables will define the conditions

for actual device operation.

Note 2: The input and output negative voltage ratings may be exceeded if

the input and output diode current ratings are observed.

Note 3: 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

Max

Units

(Note 4)

Conditions

VIK

VIH

VIL

II

IOZ

RON

ICC

∆ ICC

VIKU

Clamp Diode Voltage

4.5

High Level Input Voltage

4.0–5.5

2.0

Low Level Input Voltage

4.0–5.5

Input Leakage Current

5.5

0

OFF-STATE Leakage Current

5.5

Switch On Resistance

4.5

(Note 5)

4.5

4.5

4.0

Quiescent Supply Current

5.5

Increase in ICC per Input

5.5

Voltage Undershoot

5.5

−1.2

V

IIN = −18 mA

V

0.8

V

±1.0

µA 0 ≤ VIN ≤ 5.5V

10

µA VIN = 5.5V

±1.0

µA 0 ≤ A, B ≤ VCC

4

7

Ω

VIN = 0V, IIN = 64 mA

4

7

Ω

VIN = 0V, IIN = 30 mA

8

15

Ω

VIN = 2.4V, IIN = 15 mA

11

20

Ω

VIN = 2.4V, IIN = 15 mA

3

µA VIN = VCC or GND, IOUT = 0

2.5

mA One Input at 3.4V

−2.0

Other Inputs at VCC or GND

V

0.0 mA ≥ IIN ≥ −50 mA

OE = 5.5V

Note 4: Typical values are at VCC = 5.0V and TA = +25°C

Note 5: 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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