QS3VH126QG8 - INTEGRATED DEVICE TECHNOLOGY

INDUSTRIAL TEMPERATURE RANGE

IDTQS3VH126

2.5V / 3.3V QUAD ACTIVE HIGH, HIGH BANDWIDTH SWITCH

JANUARY 2013

2013 Integrated Device Technology, Inc. DSC-5774/13

INDUSTRIAL TEMPERATURE RANGE

FUNCTIONAL BLOCK DIAGRAM

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

APPLICATIONS:

• Hot-swapping

• 10/100 Base-T, Ethernet LAN switch

• 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 I/O capacitance, 4pF typical

• Available in QSOP and SOIC packages

IDTQS3VH126

QUICKSWITCH® PRODUCTS

2.5V / 3.3V QUAD ACTIVE

HIGH, HIGH BANDWIDTH SWITCH

DESCRIPTION:

The QS3VH126 is a high bandwidth bus switch. The QS3VH126 has

very low ON resistance, resulting in under 250ps propagation delay

through the switch. The switches can be turned ON under the control

of individual LVTTL-compatible active high Output Enable signals for

bidirectional data flow with no added delay or ground bounce. 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 imped-

ance, and over-voltage tolerance makes the QS3VH126 ideal for high

performance communications applications.

The QS3VH126 is characterized for operation from -40°C to +85°C.

4OE

1Y2Y3Y4Y

2A3A4A

3OE

2OE

1OE

INDUSTRIAL TEMPERATURE RANGE

IDTQS3VH126

2.5V / 3.3V QUAD ACTIVE HIGH, HIGH BANDWIDTH 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 (Switch OFF) 4 6 pF

CI/O Quickswitch Channels (Switch ON) 8 12 pF

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

1A - 4AI/O Bus A

1Y - 4YI/O Bus Y

1OE - 4OE I Output Enable

PIN DESCRIPTION

NOTE:

1. H = HIGH Voltage Level

L = LOW Voltage Level

X = Don't Care

OE A Y Function

H H H Connect

H L L Connect

L X X Disconnect

FUNCTION TABLE(1)

QSOP

TOP VIEW

SOIC

TOP VIEW

NC V

1OE 4OE

2OE 3OE

GND NC

1OE

4OE

2OE

3OE

GND

INDUSTRIAL TEMPERATURE RANGE

IDTQS3VH126

2.5V / 3.3V QUAD ACTIVE HIGH, HIGH BANDWIDTH 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

IDTQS3VH126

2.5V / 3.3V QUAD ACTIVE HIGH, HIGH BANDWIDTH 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. A and Y 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 A and Y 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 Y Pins Open, Control Inputs See Typical ICCD vs Enable Frequency graph below

Toggling @ 50% Duty Cycle

0 2 4 6 8 101214161820

INDUSTRIAL TEMPERATURE RANGE

IDTQS3VH126

2.5V / 3.3V QUAD ACTIVE HIGH, HIGH BANDWIDTH 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 A to Y

tPZL Switch Turn-On Delay 1.5 8 1.5 6.5 ns

tPZH xOE to xA/xY

tPLZ Switch Turn-Off Delay 1.5 7 1.5 7 ns

tPHZ xOE to xA/xY

fxOE 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 xOE control input (pass voltage > VCC, VIN = 5V, RLOAD ≥ 1MΩ, no CLOAD).

INDUSTRIAL TEMPERATURE RANGE

IDTQS3VH126

2.5V / 3.3V QUAD ACTIVE HIGH, HIGH BANDWIDTH SWITCH

PHY

3VH

SWITCH

4.5V

LOGIC

SIDE Z = 100 Ω10Mbps to 100Mbps

4.5V

LOGIC

SIDE

Z = 100 Ω

TWISTED PAIR

>100m

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

Rail-to-Rail Switching

SOME APPLICATIONS FOR HOTSWITCH PRODUCTS

Fast Ethernet Data Switching (LAN Switch)

Hot-Swapping

INDUSTRIAL TEMPERATURE RANGE

IDTQS3VH126

2.5V / 3.3V QUAD ACTIVE HIGH, HIGH BANDWIDTH SWITCH

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 t

PZH

SWITCH

CLOSED

OUTPUT

NORMALLY

HIGH

ENABLE DISABLE

SWITCH

OPEN

tPHZ

VOL + VLZ

VOH

tPZL

VLOAD/2 VLOAD/2

VIH

VOL

VOH -VHZ

TEST CIRCUITS AND WAVEFORMS

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

IDTQS3VH126

2.5V / 3.3V QUAD ACTIVE HIGH, HIGH BANDWIDTH SWITCH

ORDERING INFORMATION

QS XXXXX XX

Package

Device Type

3VH126 2.5V / 3.3V Quad Active High,

High Bandwidth Switch

S1G

SOIC - Green

QSOP - Green

Blank

Tube or Tray

Tape and Reel

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.

01/30/13 Pg. 1, 8 Updated the ordering information by adding Tape and Reel information.