QS3VH251PAG8 - IDT - Datasheet.Directory

INDUSTRIAL TEMPERATURE RANGE

IDTQS3VH251

2.5V / 3.3V QUAD 8:1 MUX/DEMUX HIGH BANDWIDTH BUS SWITCH

FEBRUARY 2014

2014 Integrated Device Technology, Inc. DSC-5944/11c

IDTQS3VH251

INDUSTRIAL TEMPERATURE RANGE

QUICKSWITCH® PRODUCTS

2.5V / 3.3V 8:1 MUX / DEMUX

HIGH BANDWIDTH BUS SWITCH

FUNCTIONAL BLOCK DIAGRAM

DESCRIPTION:

The QS3VH251 HotSwitch Quad 2:1 multiplexer/demultiplexer is a high

bandwidth bus switch. The QS3VH251 has very low ON resistance,

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

(Sx) 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.

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

and over-voltage tolerance makes the QS3VH251 ideal for high perfor-

mance comminucation applications.

The QS3VH251 is characterized for operation from -40°C to +85°C.

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

APPLICATIONS:

• Hot-swapping

• Multiplexing/demultiplexing

• Low distortion analog switch

• Replaces mechanical relay

• ATM 25/155 switching

FEATURES:

• N channel FET switches with no parasitic diode to VCC

– Isolation under power-off conditions

– No DC path to VCC or GND

– 5V tolerant in OFF and ON state

• 5V tolerant I/Os

• Low RON - 4ΩΩ

ΩΩ

Ω typical

• Flat RON characteristics over operating range

• Rail-to-rail switching 0 - 5V

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

bounce

• Excellent RON matching between channels

•VCC operation: 2.3V to 3.6V

• High bandwidth - up to 500MHz

• LVTTL-compatible control Inputs

• Undershoot Clamp Diodes on all switch and control Inputs

• Low Demux capacitance, 4pF typical

• Available in QSOP and TSSOP packages

INDUSTRIAL TEMPERATURE RANGE

IDTQS3VH251

2.5V / 3.3V QUAD 8:1 MUX/DEMUX HIGH BANDWIDTH BUS SWITCH

PIN CONFIGURATION

Symbol Description Max Unit

VTERM(2) SupplyVoltage to Ground –0.5 to +4.6 V

VTERM(3) DC Switch Voltage VS–0.5 to +5.5 V

VTERM(3) DC Input Voltage VIN –0.5 to +5.5 V

VAC AC Input Voltage (pulse width ≤20ns) –3 V

IOUT DC Output Current (max. sink current/pin) 120 mA

TSTG Storage Temperature –65 to +150 °C

ABSOLUTE MAXIMUM RATINGS(1)

NOTES:

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.

2. VCC terminals.

3. All terminals except VCC .

Symbol Parameter(1) Typ. Max. Unit

CIN Control Inputs 3 5 pF

CI/O Quickswitch Channels Demux 4 6 pF

(Switch OFF) Mux 19 25

CI/O Quickswitch Channels Demux 20 28 pF

(Switch ON) Mux 20 28

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

0V)

NOTE:

1. This parameter is guaranteed but not production tested.

Pin Names I/O Description

I0 - I7I Data Inputs

S0 - S2I Select Input

EI Enable Input

Y O Data Outputs

PIN DESCRIPTION

NOTE:

1. H = HIGH Voltage Level

L = LOW Voltage Level

X = Don't Care

Z = High-Impedence

FUNCTION TABLE(1)

QSOP/ TSSOP

TOP VIEW

GND

VCC

Select

ES2S1S0Y Function

H X X X Z Disable

LLLLI0S2 - S0 = 0

LLLHI1S2 - S0 = 1

LLHLI2S2 - S0 = 2

LLHHI3S2 - S0 = 3

LHLLI4S2 - S0 = 4

LHLHI5S2 - S0 = 5

LHHLI6S2 - S0 = 6

LHHHI

7S2 - S0 = 7

INDUSTRIAL TEMPERATURE RANGE

IDTQS3VH251

2.5V / 3.3V QUAD 8:1 MUX/DEMUX HIGH BANDWIDTH BUS SWITCH

TYPICAL ON RESISTANCE vs VIN AT VCC = 3.3V

RON

(ohms)

VIN

(Volts)

0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 5.04.5

Symbol Parameter Test Conditions Min. Typ.(1) Max. Unit

VIH Input HIGH Voltage Guaranteed Logic HIGH VCC = 2.3V to 2.7V 1.7 — — V

for Control Inputs VCC = 2.7V to 3.6V 2 — —

VIL Input LOW Voltage Guaranteed Logic LOW VCC = 2.3V to 2.7V — — 0.7 V

for Control Inputs VCC = 2.7V to 3.6V — — 0.8

IIN Input Leakage Current (Control Inputs) 0V ≤ VIN ≤ VCC ——±1μA

IOZ Off-State Current (Hi-Z) 0V ≤ VOUT ≤ 5V, Switches OFF — — ±1 μA

IOFF Data Input/Output Power Off Leakage VIN or VOUT 0V to 5V, VCC = 0V — — ±1 μA

VCC = 2.3V VIN = 0V ION = 30mA — 6 8

RON Switch ON Resistance Typical at VCC = 2.5V VIN = 1.7V ION = 15mA — 7 9 Ω

VCC = 3V VIN = 0V ION = 30mA — 4 6

VIN = 2.4V ION = 15mA — 5 8

DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE

Following Conditions Apply Unless Otherwise Specified:

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

NOTE:

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

INDUSTRIAL TEMPERATURE RANGE

IDTQS3VH251

2.5V / 3.3V QUAD 8:1 MUX/DEMUX HIGH BANDWIDTH BUS SWITCH

TYPICAL ICCD vs ENABLE FREQUENCY CURVE AT VCC = 3.3V

ICCD (mA)

ENABLE FREQUENCY (MHz)

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.

POWER SUPPLY CHARACTERISTICS

Symbol Parameter Test Conditions(1) Min. Typ. Max. Unit

ICCQ Quiescent Power Supply Current VCC = Max., VIN = GND or VCC, f = 0 — 2 4 mA

ΔICC Power Supply Current (2,3) per Input HIGH VCC = Max., VIN = 3V, f = 0 per Control Input — — 30 μA

ICCD Dynamic Power Supply Current(4) VCC = 3.3V, A and B Pins Open, Control Inputs See Typical ICCD vs Enable Frequency graph below

Toggling @ 50% Duty Cycle

0 2 4 6 8 10 12 14 16 18 20

INDUSTRIAL TEMPERATURE RANGE

IDTQS3VH251

2.5V / 3.3V QUAD 8:1 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)

Symbol Parameter Min. (4) Max. Min. (4) Max. Unit

tPLH Data Propagation Delay(2,3) ⎯0.2 ⎯0.2 ns

tPHL Y to Ix or Ix to Y

tSEL Select Time 1.5 9 1.5 8 ns

Sx to Y

tPZH Enable Time 1.5 9 1.5 9 ns

tPZL S to Ix

tPHZ Disable Time 1.5 8 1.5 8 ns

tPLZ S to Ix

tPZH Enable Time 1.5 9 1.5 8 ns

tPZL E to Y or Ix

tPHZ Disable Time 1.5 8 1.5 8 ns

tPLZ E to Y or Ix

fEorSx 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 CL = 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 Sx or E control input (pass voltage > VCC, VIN = 5V, RLOAD ≥ 1MΩ, no CLOAD).

INDUSTRIAL TEMPERATURE RANGE

IDTQS3VH251

2.5V / 3.3V QUAD 8:1 MUX/DEMUX HIGH BANDWIDTH BUS SWITCH

MEMORY

CPU

MULTIPLEXING

CONTROL CIRCUITRY

CHARGE PUMP

Vcc = 3.3V

0 to +5V NFET

+6.5V

DRIVER

0 to +5V

SINGLE HOT

SWITCH

CARD I/O ON CARD

LOGIC

CONNECTOR

QS3VHXXX

CPU

RAM

BUS

CARD I/O ON CARD

LOGIC

CONNECTOR

QS3VHXXX

PLUGGABLE CARD/ LIVE SYSTEM ZERO DOWN TIME SYSTEM

8 BANKS

Rail-to-Rail Switching

SOME APPLICATIONS FOR HOTSWITCH PRODUCTS

Multiplexing/Demultiplexing

Hot-Swapping

INDUSTRIAL TEMPERATURE RANGE

IDTQS3VH251

2.5V / 3.3V QUAD 8:1 MUX/DEMUX HIGH BANDWIDTH BUS SWITCH

TEST CIRCUITS AND WAVEFORMS

Open

VLOAD

GND

VCC

Pulse

Generator D.U.T.

500Ω

VIN VOUT

(1, 2)

SAME PHASE

INPUT TRANSITION

OPPOSITE PHASE

INPUT TRANSITION

VOH

VOL

tPLH tPHL

tPHL

tPLH

OUTPUT

VIH

CONTROL

INPUT

tPLZ 0V

OUTPUT

NORMALLY

LOW tPZH

SWITCH

CLOSED

OUTPUT

NORMALLY

HIGH

ENABLE DISABLE

SWITCH

OPEN

tPHZ

VOL + VLZ

VOH

tPZL

VLOAD/2 VLOAD/2

VIH

VOL

VOH -VHZ

TEST CONDITIONS

Symbol VCC(1)= 3.3V ± 0.3V VCC(2)= 2.5V ± 0.2V Unit

VLOAD 6 2 x Vcc V

VIH 3 Vcc V

VT1.5 VCC/2 V

VLZ 300 150 mV

VHZ 300 150 mV

CL50 30 pF

NOTE:

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

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.

DEFINITIONS:

CL = Load capacitance: includes jig and probe capacitance.

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

SWITCH POSITION

Test Switch

tPLZ/tPZL VLOAD

tPHZ/tPZH GND

tPD Open

Propagation Delay

Test Circuits for All Outputs

Enable and Disable Times

INDUSTRIAL TEMPERATURE RANGE

IDTQS3VH251

2.5V / 3.3V QUAD 8:1 MUX/DEMUX HIGH BANDWIDTH BUS SWITCH

ORDERING INFORMATION

QS XXXXX XX

Package

Device Type

Blank

Tube or Tray

Tape and Reel

3VH251 2.5V / 3.3V 8:1 Mux/Demux

High Bandwidth Bus Switch

PAG

QSOP - Green

TSSOP - Green

CORPORATE HEADQUARTERS for SALES: for Tech Support:

6024 Silver Creek Valley Road 800-345-7015 or 408-284-8200 logichelp@idt.com

San Jose, CA 95138 fax: 408-284-2775

www.idt.com

Datasheet Document History

09/01/08 Pg. 4, 8 Revise ICCQ Typ. and Max. Remove non green package version and updated the ordering

information by removing the “IDT” notation.

02/24/14 Pg. 8 Updated the Ordering Information by Adding Tape and Reel information.