QS3VH257S1G8全新原装原理图各脚功能电路原理芯片引脚定义-中国IC网-芯三七

IDTQS3VH257

INDUSTRIAL TEMPERATURE RANGE

2.5V / 3.3V QUAD 2:1 MUX/DEMUX HIGH BANDWIDTH BUS SWITCH

QUICKSWITCH^®PRODUCTS

IDTQS3VH257

2.5V/3.3V QUAD 2:1 MUX/DEMUX

HIGH BANDWIDTH BUS SWITCH

FEATURES:

DESCRIPTION:

• N channel FET switches with no parasitic diode to VCC

– Isolation under power-off conditions

– No DC path to VCC or GND

The QS3VH257 HotSwitch Quad 2:1 multiplexer/demultiplexer is a high

bandwidth bus switch. The QS3VH257 has very low ON resistance,

resulting in under 250ps propagation delay through the switch. The Select

(S) input controls the data flow. The multiplexers/demultiplexers are

enabled when the Enable (E) input is low. In the ON state, the switches can

pass signals up to 5V. In the OFF state, the switches offer very high

impedence at the terminals.

– 5V tolerant in OFF and ON state

• 5V tolerant I/Os

• Low RON - 4Ω typical

• Flat R^ONcharacteristics over operating range

• Rail-to-rail switching 0 - 5V

The combination of near-zero propagation delay, high OFF impedance,

and over-voltage tolerance makes the QS3VH257 ideal for high perfor-

mance communication applications.

• Bidirectional dataflow with near-zero delay: no added ground

bounce

• Excellent R^ONmatching between channels

• VCC operation: 2.3V to 3.6V

The QS3VH257 is characterized for operation from -40°C to +85°C.

• High bandwidth - up to 500MHz

• LVTTL-compatible control Inputs

• Undershoot Clamp Diodes on all switch and control Inputs

• Low I/O capacitance, 4pF typical

• Available in QSOP, SOIC, and TSSOP packages

APPLICATIONS:

• Hot-swapping

• Multiplexing/demultiplexing

• Low distortion analog switch

• Replaces mechanical relay

• ATM 25/155 switching

FUNCTIONAL BLOCK DIAGRAM

S

E

I0_A

I1_A

Y_A

Y_B

Y _C

Y _D

I0_B

I1_B

I0_C

I1_C

I0_D

I1_D

The IDT logo is a registered trademark of Integrated Device Technology, Inc.

INDUSTRIAL TEMPERATURE RANGE

FEBRUARY 2014

1

c

2014 Integrated Device Technology, Inc.

DSC-5596/15

IDTQS3VH257

INDUSTRIAL TEMPERATURE RANGE

2.5V / 3.3V QUAD 2:1 MUX/DEMUX HIGH BANDWIDTH BUS SWITCH

ABSOLUTE MAXIMUM RATINGS⁽¹⁾

PIN CONFIGURATION

Symbol

Description

Max

–0.5 to +4.6

–0.5 to +5.5

–3

Unit

V

(2)

VTERM

SupplyVoltage to Ground

DC Switch Voltage VS

(3)

VTERM

V

(3)

VTERM

DC Input Voltage VIN

V

S

VCC

E

1

2

3

4

5

6

16

15

14

13

VAC

IOUT

AC Input Voltage (pulse width ≤20ns)

DC Output Current (max. sink current/pin)

Storage Temperature

V

120

mA

°C

I0A

I1A

YA

I0B

I1B

TSTG

–65 to +150

NOTES:

I0D

I1D

YD

I0C

1. Stresses greater than those listed under ABSOLUTE 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.

12

11

10

9

2. V^CCterminals.

3. All terminals except V^CC.

I1C

YC

YB

GND

7

8

CAPACITANCE (TA = +25°C, F = 1MHz, VIN = 0V, VOUT =

Symbol

Parameter⁽¹⁾

Typ.

3

Max. Unit

0V)

CIN

Control Inputs

5

6

pF

CI/O

Quickswitch Channels Demux

4

(Switch OFF)

Quickswitch Channels Demux

(Switch ON) Mux

Mux

7

9

QSOP/ SOIC/ TSSOP

TOP VIEW

CI/O

10

15

pF

NOTE:

1. This parameter is guaranteed but not production tested.

PIN DESCRIPTION

Pin Names

I/O

Description

Data Inputs

Ixx

S

I

Select Input

Enable Input

Data Outputs

E

I

Y^A- YD

O

FUNCTION TABLE⁽¹⁾

Inputs

Outputs

E

H

L

S

X

L

YA

Z

YB

YC

Z

YD

Z

Function

Disable

Z

I0A

I1^A

I0B

I1B

I0C

I1C

I0D

I1D

Select 0

Select 1

L

H

NOTE:

1. H = HIGH Voltage Level

L = LOW Voltage Level

X = Don't Care

Z = High-Impedence

2

IDTQS3VH257

INDUSTRIAL TEMPERATURE RANGE

2.5V / 3.3V QUAD 2:1 MUX/DEMUX HIGH BANDWIDTH BUS SWITCH

DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE

Following Conditions Apply Unless Otherwise Specified:

Industrial: TA = –40°C to +85°C, VCC = 3.3V ±0.3V

Symbol

Parameter

Input HIGH Voltage

Test Conditions

Min.

1.7

2

Typ.⁽¹⁾Max.

Unit

VIH

Guaranteed Logic HIGH

VCC = 2.3V to 2.7V

VCC = 2.7V to 3.6V

VCC = 2.3V to 2.7V

VCC = 2.7V to 3.6V

—

6

—

0.7

0.8

±1

8

V

for Control Inputs

Guaranteed Logic LOW

for Control Inputs

0V ≤ VIN ≤ VCC

VIL

Input LOW Voltage

—

V

IIN

IOZ

Input Leakage Current (Control Inputs)

Off-State Current (Hi-Z)

μA

0V ≤ VOUT ≤ 5V, Switches OFF

VIN or VOUT 0V to 5V, VCC = 0V

VCC = 2.3V

IOFF

Data Input/Output Power Off Leakage

VIN = 0V

ION = 30mA

ION = 15mA

ION = 30mA

ION = 15mA

RON

Switch ON Resistance

Typical at VCC = 2.5V

VCC = 3V

VIN = 1.7V

VIN = 0V

7

9

Ω

4

6

VIN = 2.4V

5

8

NOTE:

1. Typical values are at VCC = 3.3V and TA = 25°C.

IN

CC

TYPICAL ON RESISTANCE vs V AT V

= 3.3V

16

14

12

RON

(ohms)

10

8

6

4

2

0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

1.0

0.0

0.5

VIN

(Volts)

3

IDTQS3VH257

INDUSTRIAL TEMPERATURE RANGE

2.5V / 3.3V QUAD 2:1 MUX/DEMUX HIGH BANDWIDTH BUS SWITCH

POWER SUPPLY CHARACTERISTICS

Symbol

ICCQ

Parameter

Test Conditions⁽¹⁾

Min.

—

Typ.

2

Max.

4

Unit

mA

μA

Quiescent Power Supply Current

Power Supply Current ^(2,3)per Input HIGH

Dynamic Power Supply Current⁽⁴⁾

VCC = Max., VIN = GND or VCC, f = 0

VCC = Max., VIN = 3V, f = 0 per Control Input

ΔICC

—

30

ICCD

VCC = 3.3V, A and B Pins Open, Control Inputs See Typical ICCD vs Enable Frequency graph below

Toggling @ 50% Duty Cycle

NOTES:

1. For conditions shown as Min. or Max., use the appropriate values specified under DC Electrical Characteristics.

2. Per input driven at the specified level. Mux/demux pins do not contribute to ΔIcc.

3. This parameter is guaranteed but not tested.

4. This parameter represents the current required to switch internal capacitance at the specified frequency. The mux/demux inputs do not contribute to the Dynamic Power Supply Current.

This parameter is guaranteed but not production tested.

CCD

CC

TYPICAL I

vs ENABLE FREQUENCY CURVE AT V

= 3.3V

8

6

4

2

0

2

4

6

8

10

12

14

16

18

20

ENABLE FREQUENCY (MHz)

4

IDTQS3VH257

INDUSTRIAL TEMPERATURE RANGE

2.5V / 3.3V QUAD 2:1 MUX/DEMUX HIGH BANDWIDTH BUS SWITCH

SWITCHING CHARACTERISTICS OVER OPERATING RANGE

TA = -40°C to +85°C

VCC = 2.5 ± 0.2V ⁽¹⁾

VCC = 3.3 ± 0.3V ⁽¹⁾

(4)

Symbol

tPLH

tPHL

Parameter

Min.

Max.

Min.

Max.

Unit

Data Propagation Delay^(2,3)

Yx to Ixx or Ixx to Yx

Select Time

S to Yx

Enable Time

S to Ixx

⎯

1.5

⎯

0.2

⎯

0.2

ns

tSEL

9

1.5

8

9

8

ns

tPZH

tPZL

tPHZ

tPLZ

tPZH

tPZL

tPHZ

tPLZ

9

Disable Time

S to Ixx

Enable Time

E to Yx or Ixx

Disable Time

E to Yx or Ixx

8

9

8

fEorS

Operating Frequency - Enable^(2,5)

10

⎯

20

MHz

NOTES:

1. See Test Conditions under TEST CIRCUITS AND WAVEFORMS.

2. This parameter is guaranteed but not production tested.

3. The bus switch contributes no propagation delay other than the RC delay of the ON resistance of the switch and the load capacitance. The time constant for the switch alone is of the

order of 0.2ns at C^L= 50pF. Since this time constant is much smaller than the rise and fall times of typical driving signals, it adds very little propagation delay to the system. Propagation

delay of the bus switch, when used in a system, is determined by the driving circuit on the driving side of the switch and its interaction with the load on the driven side.

4. Minimums are guaranteed but not production tested.

5. Maximum toggle frequency for S or E control input (pass voltage > VCC, VIN = 5V, RLOAD ≥ 1MΩ, no CLOAD).

5

IDTQS3VH257

INDUSTRIAL TEMPERATURE RANGE

2.5V / 3.3V QUAD 2:1 MUX/DEMUX HIGH BANDWIDTH BUS SWITCH

SOME APPLICATIONS FOR HOTSWITCH PRODUCTS

NFET

0 to +5V

+6.5V

Vcc = 3.3V

CHARGE PUMP

OE

DRIVER

SINGLE HOT

SWITCH

Rail-to-Rail Switching

MULTIPLEXING

CONTROL CIRCUITRY

MEMORY

CPU

Multiplexing / Demultiplexing

ZERO DOWN TIME SYSTEM

PLUGGABLE CARD/ LIVE SYSTEM

ON CARD

LOGIC

CARD I/O

CPU

ON CARD

LOGIC

CARD I/O

RAM

BUS

Hot-Swapping

6

IDTQS3VH257

INDUSTRIAL TEMPERATURE RANGE

2.5V / 3.3V QUAD 2:1 MUX/DEMUX HIGH BANDWIDTH BUS SWITCH

TEST CIRCUITS AND WAVEFORMS

TEST CONDITIONS

VIH

VT

SAME PHASE

INPUT TRANSITION

Symbol

VLOAD

VIH

VCC⁽¹⁾= 3.3V ± 0.3V

VCC⁽²⁾= 2.5V ± 0.2V

Unit

0V

tPHL

tPLH

6

2 x Vcc

Vcc

V

VOH

VT

VOL

OUTPUT

3

V

VT

1.5

300

50

VCC/2

150

V

VIH

VT

0V

OPPOSITE PHASE

INPUT TRANSITION

VLZ

mV

pF

VHZ

150

CL

30

Propagation Delay

VLOAD

Open

GND

VCC

DISABLE

tPLZ

ENABLE

VIH

CONTROL

INPUT

VT

0V

500Ω

tPZL

VIN

VOUT

Pulse^{(1, 2)}

Generator

VLOAD/2

VT

D.U.T.

VLOAD/2

OUTPUT

NORMALLY

LOW

SWITCH

CLOSED

VOL + VLZ

VOL

500Ω

tPHZ

RT

tPZH

CL

VOH

VOH -VHZ

OUTPUT

NORMALLY

HIGH

SWITCH

OPEN

VT

0V

Test Circuits for All Outputs

NOTE:

1. Diagram shown for input Control Enable-LOW and input Control Disable-HIGH.

Enable and Disable Times

DEFINITIONS:

CL = Load capacitance: includes jig and probe capacitance.

RT = Termination resistance: should be equal to ZOUT of the Pulse Generator.

NOTES:

1. Pulse Generator for All Pulses: Rate ≤ 10MHz; tF ≤ 2.5ns; tR ≤ 2.5ns.

2. Pulse Generator for All Pulses: Rate ≤ 10MHz; tF ≤ 2ns; tR ≤ 2ns.

SWITCH POSITION

Test

tPLZ/tPZL

tPHZ/tPZH

tPD

Switch

VLOAD

GND

Open

7

IDTQS3VH257

INDUSTRIAL TEMPERATURE RANGE

2.5V / 3.3V QUAD 2:1 MUX/DEMUX HIGH BANDWIDTH BUS SWITCH

ORDERING INFORMATION

XXXXX

XX

QS

X

Package

Device Type

Blank

8

Tube or Tray

Tape and Reel

S1G

QG

PAG

SOIC - Green

QSOP - Green

TSSOP - Green

2.5V / 3.3V Quad 2:1 Mux/Demux

High Bandwidth Bus Switch

3VH257

Datasheet Document History

09/01/08

Pg. 4, 8

Revise ICCQ Typ. and Max. Remove non green package version and updated the ordering

informationbyremovingthe“IDT”notation.

02/24/14

Pg. 8

UpdatedtheOrderingInformationbyAddingTapeandReelinformation.

CORPORATE HEADQUARTERS

6024 Silver Creek Valley Road

San Jose, CA 95138

for SALES:

for Tech Support:

logichelp@idt.com

800-345-7015 or 408-284-8200

fax: 408-284-2775

www.idt.com

8

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