FEATURES:

DESCRIPTION:

• Patented technology
• High signal -3db passing bandwidth at 1.2GHz
• Near-Zero propagation delay
• VCC = 1.65V to 3.6V
• Ultra-Low Quiescent Power: 0.1µA typical
• Ideally suited for low power applications
• Industrial operating temperature: -40

°C to +85°C

• Available in 16pin 173mil wide TSSOP package

Potato Semiconductor’s PO3B3257A is
designed for world top performance using
submicron CMOS technology to achieve GHz
high bandwidth.

The PO3B3257A is a 4-channel, 2:1 Multiplexer /
Demultiplexer with  3-state outputs. The switch 
introduces no additional ground bounce  noise or 
propagation delay.

Pin Configuration

Block Diagram

Pin Description

1
2
3
4
5

16

6

15

7

14

8

13
12
11

10

9

S

Y

A

GND

V

CC

Y

C

Y

B

Truth Table

E

I

A

0

I

A

0

I

A

1

I

A

1

I

B

0

I

B

0

I

B

1

I

B

1

I

C

0

I

C

0

I

C

1

I

C

1

I

D

0

I

D

0

I

D

1

I

D

1

S

Y

A

E

Y

B

Y

C

Y

D

Y

D

I

Y

E

SW

SW

SW

SW

SW

SW

SW

SW

SW

Pin Name

Description

I

A

N

-

I

D

N

Data Inputs

S

Select Inputs

E

Enable

Y

A

-Y

D

Data Outputs

GND

Ground

V

CC

Power

NC

No Connect

E

S

Y

A

Y

B

Y

C

Y

D

Function

H

X

Hi-Z Hi-Z

Hi-Z

Hi-Z Disable

L

L

I

A

0

I

B

0

I

C

0

I

D

0

S = 0

L

H

I

A

1

I

B

1

I

C

1

I

D

1

S = 1

Quad 2:1 Mux/DeMux

High Bandwidth Potato Chip 

1

01/01/10

Potato Semiconductor Corporation

PO3B3257A

www.potatosemi.com

Storage Temperature ................................................ –65°C to +150°C
Ambient Temperature with Power Applied ............... –40°C to +85°C
Supply Voltage to Ground Potential ........................... –0.5V to +4.6V
DC Input Voltage ........................................................ –0.5V to +Vcc
DC Output Current................................................................... 120mA
Power Dissipation ....................................................................... 0.5W

Maximum Ratings

(Above which the useful life may be impaired. For user guidelines, not tested.)

DC Electrical Characteristics, 3.3V Supply 

(Over the Operating Range, T

A

 = –40°C to +85°C, V

CC

 = 3.3V ±10%)

Parameters

Description

Test Conditions

Min. Typ.

Max. Units

V

IH

Input HIGH Voltage

Guaranteed Logic HIGH Level

2.0

V

V

IL

Input LOW Voltage

Guaranteed Logic LOW Level

0.8

I

IH

Input HIGH Current

V

CC

 = Max., V

IN

 = V

CC

±1

A

I

IL

Input LOW Current

V

CC

 = Max., V

IN

 = GND

±1

I

OZH

High Impedance Output Current 0 Y, In V

CC

±1

R

ON

Switch On-Resistance

V

CC

= Min., V

IN

= 0.0V,

I

ON

 = -48 mA or -64mA

12

16

V

CC

= Min., V

IN

= V

CC

, I

ON

 = -15 mA

12

16

DC Electrical Characteristics, 2.5V Supply 

(Over  Operating Range, T

A

 = –40°C to +85°C, V

CC

= 2.5V ± 10%)

Parameters

Description

Test Conditions

Min.

Typ.

Max.

Units

V

IH

Input HIGH Voltage

Guaranteed Logic HIGH Level

1.8

V

CC

 + 0.3

V

V

IL

Inout LOW Voltage

Guaranteed Logic LOW Level

–0.3

0.8

I

IH

Input HIGH Current

V

CC

 = Max., V

IN

 = V

CC

±1

A

I

IL

Input LOW Current

V

CC

 = Max., V

IN

= GND

±1

I

OZH

High Impedance Current

0 Y, In  V

CC

±1

R

ON

Switch On Resistance

V

CC

 = Min., V

IN

 = 0.0V,

I

ON

 = –48mA

18

22

V

CC

 = Min., V

IN

 = 2.25V,

I

ON

 = -15mA

18

22

Note:

Stresses greater than those listed under
MAXIMUM RATINGS may cause permanent
damage to the device. This is a stress rating
only and functional operation of the device at
these or any other conditions above those
indicated in the operational sections of this

specification

is not implied. Exposure to

absolute maximum rating conditions for
extended periods may affect reliability.

Quad 2:1 Mux/DeMux

High Bandwidth Potato Chip 

2

01/01/10

Potato Semiconductor Corporation

PO3B3257A

www.potatosemi.com

Power Supply Characteristics

Symbol

Description

Test Conditions (1)

Min

Typ

Max

Unit

Icc

Quiescent Power Supply Current

Vcc=Max, Vin=Vcc or GND

-

0.1

3

uA

Notes:

1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at Vcc = 3.3V, 25

°

C ambient.

3. This parameter is guaranteed but not tested.
4. Not more than one output should be shorted at one time. Duration of the test should not exceed one second.
5. VoH = Vcc – 0.6V at rated current

Capacitance

(T

A

 = 25°C f = 1 MHz)

Switching Characteristics over 3.3V Operating Range

Parameters

Description

Conditions

Units

Max.

t

PLH

t

PHL

See Test Diagram

0.3

ns

t

PZH

t

PZL

See Test Diagram

2.0

t

PHZ

t

PLZ

3.0

Dynamic Electrical Characteristics Over the Operating Range 

(T

A

 = -40º to +85º, V

CC

 = 3.3V ± 10%)

Parameter

Description

Test Condition

Typ.

Units

X

TALK

Crosstalk

R

L

 = 100

-60

dB

O

IRR

Off-Isolation

R

L

 = 100

-60

BW

-3dB Bandwidth

R

L

 = 100

1.2

GHz

Parameters

Description

Test Conditions

Typical

Units

C

IN

Input Capacitance

V

IN

 = 0V

3

pF

C

OFFYN

Y

N

 Capacitance, Switch OFF

8

C

OFFIN

I

N

 Capacitance, Switch OFF

5

C

ON

I

N

/Y

N

 Capacitance, Switch ON

13

Propogation Delay

Bus Enable Time

Bus Disable Time

Quad 2:1 Mux/DeMux

High Bandwidth Potato Chip 

3

01/01/10

Potato Semiconductor Corporation

PO3B3257A

www.potatosemi.com

Switching Characteristics over 2.5V Operating Range

Parameters

Description

Conditions

Units

Max.

t

PLH

t

PHL

See Test Diagram

0.3

ns

t

PZH

t

PZL

See Test Diagram

2.0

t

PHZ

t

PLZ

3.0

Test Circuit for Electrical Characteristics

R

T

10pF

C

L

V

CC

V

IN

V

OUT

200-ohm

200-ohm

6.0V

Pulse

Generator

D.U.T

Switch Positions

Test

Switch

t

PLZ

, t

PZL

6.0V

t

PHZ

, t

PZH

GND

Prop Delay 

Open

Switching Waveforms

tPLZ

1.25V

1.25V

2.5V

VOH

0V

VOL

VDD/2

VDD/2

tPHZ

tPZL

tPZH

Output

Output

VOL +0.3V

VOH –0.3V

VOL
VOH

SEL

Input

t

PLH

2.5V

2.5V

2.5V

2.5V

t

PHL

3.5V

1.5V

Output

V

OH

V

OL

Voltage Waveforms Propagation Delay Times

Voltage Waveforms Enable and Disable Times

Propogation Delay

Bus Enable Time

Bus Disable Time

Quad 2:1 Mux/DeMux

High Bandwidth Potato Chip 

4

01/01/10

Potato Semiconductor Corporation

PO3B3257A

www.potatosemi.com

Packaging Mechanical Drawing: 16 pin TSSOP

Quad 2:1 Mux/DeMux

High Bandwidth Potato Chip 

5

01/01/10

Potato Semiconductor Corporation

PO3B3257A

www.potatosemi.com

IC Ordering Information

Top-Marking

Ordering Code

Package

173mil TSSOP 16

Pb-free & Green

PO3B3257ATU for Tube
PO3B3257ATR for Tape & Reel

PO3B3257AT
PO3B3257AT

-40

°

C to 85

°

C

-40

°

C to 85

°

C

TA

IC Package Information

PACKAGE
CODE

PACKAGE
TYPE

QTY
PER
TUBE

TAPE
WIDTH
(mm)

TAPE
PITCH
(mm)

PIN 1  LOCATION

TAPE TRAILER 
LENGTH

QTY
PER REEL

TAPE LEADER 
LENGTH

12

8

Top Left Corner

39 (12”)

3000

64 (20”)

T

TSSOP 16

96

173mil TSSOP 16

Pb-free & Green