IDTQS3VH800
2.5V / 3.3V 10-BIT HIGH BANDWIDTH BUS SWITCH WITH PRECHARGED OUTPUTS
INDUSTRIAL TEMPERATURE RANGE
QUICKSWITCH® PRODUCTS
2.5V / 3.3V 10-BIT HIGH
BANDWIDTH BUS SWITCH
WITH PRECHARGED OUTPUTS
IDTQS3VH800
FEATURES:
DESCRIPTION:
• 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
• B port precharged to user-selectable VBIAS
Ω typical
• Low RON - 4Ω
• 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 TSSOP packages
The QS3VH800 HotSwitch is a high bandwidth, 10-bit bus switch. The
QS3VH800 has very low ON resistance, resulting in under 250ps propagation delay through the switch. The QS3VH800 precharges the B port to a
user selectable bias voltage (VBIAS) to minimize live insertion noise. The
switches can be turned ON under the control of the LVTTL-compatible
Output Enable (OE) signal 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 impedance,
and over-voltage tolerance makes the QS3VH800 ideal for high performance communication applications.
The QS3VH800 is characterized for operation from -40°C to +85°C.
APPLICATIONS:
•
•
•
•
•
Hot-swapping
10/100 Base-T, Ethernet LAN switch
Low distortion analog switch
Replaces mechanical relay
ATM 25/155 switching
FUNCTIONAL BLOCK DIAGRAM
VBIAS
A0
B0
A9
B9
OE
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
SEPTEMBER 2008
1
c
2008 Integrated Device Technology, Inc.
DSC-5880/16
IDTQS3VH800
2.5V / 3.3V 10-BIT HIGH BANDWIDTH BUS SWITCH WITH PRECHARGED OUTPUTS
ABSOLUTE MAXIMUM RATINGS(1)
PIN CONFIGURATION
OE
1
24
VCC
A0
2
23
B0
A1
3
22
B1
A2
4
21
B2
A3
5
20
B3
A4
6
19
B4
A5
7
18
B5
A6
8
17
B6
A7
9
16
B7
A8
10
15
B8
A9
11
14
B9
GND
12
INDUSTRIAL TEMPERATURE RANGE
13
Symbol
Description
VTERM(2)
SupplyVoltage to Ground
Max
Unit
–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
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 .
CAPACITANCE
0V)
Symbol
VBIAS
Parameter
(TA = +25°C, F = 1MHz, VIN = 0V, VOUT =
(1)
CIN
Control Inputs
CI/O
Quickswitch Channels (Switch OFF)
Typ.
Max.
Unit
3
5
pF
4
6
pF
8
12
pF
VBIAS = OPEN
Quickswitch Channels (Switch ON)
CI/O
QSOP/ TSSOP
TOP VIEW
NOTE:
1. This parameter is guaranteed but not production tested.
PIN DESCRIPTION
Pin Names
I/O
Description
OE
I
Bus Switch Enable
VBIAS
I
Bias Voltage
A 0 - A9
I/O
Bus A
B 0 - B9
I/O
Bus B
FUNCTION TABLE(1)
OE
B0 - B9
Function
L
A0 - A9
Connect
H
VBIAS
Disconnect A0 - A9 = Z
NOTE:
1. H = HIGH Voltage Level
L = LOW Voltage Level
Z = High-Impedence
2
IDTQS3VH800
2.5V / 3.3V 10-BIT HIGH BANDWIDTH BUS SWITCH WITH PRECHARGED OUTPUTS
INDUSTRIAL TEMPERATURE RANGE
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
VIH
VIL
VBIAS
Parameter
Test Conditions
Input HIGH Voltage
Min.
Typ.(1)
Max.
Unit
V
Guaranteed Logic HIGH
VCC = 2.3V to 2.7V
1.7
—
—
for Control Inputs
VCC = 2.7V to 3.6V
2
—
—
Input LOW Voltage
Guaranteed Logic LOW
VCC = 2.3V to 2.7V
—
—
0.7
for Control Inputs
VCC = 2.7V to 3.6V
—
—
0.8
Bias Voltage
VCC = 3V to 3.6V, IO = 0
0
—
5
VCC = 2.3V to 2.7V, IO = 0
V
V
0
—
3.3
0.25
—
—
mA
0V ≤ VIN ≤ VCC
—
—
±1
µA
IO
Bias Current(2)
VCC = 3V, VBIAS = 2.4V, VO = 0, OE = HIGH
IIN
Input Leakage Current (Control Inputs)
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
RON
Switch ON Resistance
VCC = 2.3V
VIN = 0V
ION = 30mA
—
6
8
Typical at VCC = 2.5V
VIN = 1.7V
ION = 15mA
—
7
9
VCC = 3V
VIN = 0V
ION = 30mA
—
4
6
VIN = 2.4V
ION = 15mA
—
5
8
NOTES:
1. Typical values are at VCC = 3.3V and TA = 25°C.
2. Bias resistance is 5kΩ typical at VCC = 3.3V; VBIAS = 2.4V, 25°C.
TYPICAL ON RESISTANCE vs VIN AT VCC = 3.3V
16
14
RON
(ohms)
12
10
8
6
4
2
0
0.0
0.5
1.0
1.5
2.0
2.5
VIN
(Volts)
3
3.0
3.5
4.0
4.5
5.0
Ω
IDTQS3VH800
2.5V / 3.3V 10-BIT HIGH BANDWIDTH BUS SWITCH WITH PRECHARGED OUTPUTS
INDUSTRIAL TEMPERATURE RANGE
POWER SUPPLY CHARACTERISTICS
Symbol
Test Conditions(1)
Parameter
Min.
Typ.
Max.
Unit
ICCQ
Quiescent Power Supply Current
VCC = Max., VIN = GND or VCC, f = 0
—
2
4
mA
∆ICC
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
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 B pins do not contribute to ∆Icc.
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 B inputs do not contribute to the Dynamic Power Supply Current. This
parameter is guaranteed but not production tested.
TYPICAL ICCD vs ENABLE FREQUENCY CURVE AT VCC = 3.3V
12
10
ICCD (mA)
8
6
4
2
0
0
2
4
6
8
10
12
ENABLE FREQUENCY (MHz)
4
14
16
18
20
IDTQS3VH800
2.5V / 3.3V 10-BIT HIGH BANDWIDTH BUS SWITCH WITH PRECHARGED OUTPUTS
INDUSTRIAL TEMPERATURE RANGE
SWITCHING CHARACTERISTICS OVER OPERATING RANGE
TA = -40°C to +85°C
VCC = 2.5 ± 0.2V (1)
Symbol
tPLH
tPHL
Parameter
Data Propagation Delay(2,3)
Ax to Bx or Bx to Ax
Test Conditions
tPZL
Switch Turn-On Delay
VBIAS = 3V
tPZH
OE to Ax to Bx
VBIAS = GND
tPLZ
Switch Turn-Off Delay
VBIAS = 3V
tPHZ
OE to Ax to Bx
VBIAS = GND
fOE
Operating Frequency - Enable(2,5)
VBIAS = OPEN
VCC = 3.3 ± 0.3V (1)
Min. (4)
⎯
Max.
0.2
Min. (4)
⎯
Max.
0.2
Unit
ns
1.5
8
1.5
7.5
ns
1.5
7
1.5
7
ns
⎯
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 OE control input (pass voltage > VCC, VIN = 5V, RLOAD ≥ 1MΩ, no CLOAD).
5
IDTQS3VH800
2.5V / 3.3V 10-BIT HIGH BANDWIDTH BUS SWITCH WITH PRECHARGED OUTPUTS
INDUSTRIAL TEMPERATURE RANGE
SOME APPLICATIONS FOR HOTSWITCH PRODUCTS
NFET
0 to +5V
Vcc = 3.3V
+6.5V
CHARGE PUMP
OE
0 to +5V
DRIVER
SINGLE HOT
SWITCH
Rail-to-Rail Switching
PHY
3VH
SWITCH
4.5VPP
LOGIC
SIDE
10Mbps to 100Mbps
Z = 100 Ω
Z = 100 Ω
>100m
4.5VPP
TWISTED PAIR
LOGIC
SIDE
2VPP
Fast Ethernet Data Switching (LAN Switch)
ZERO DOWN TIME SYSTEM
PLUGGABLE CARD/ LIVE SYSTEM
CARD I/O
ON CARD
LOGIC
CONNECTOR
QS3VHXXX
CPU
CARD I/O
ON CARD
LOGIC
CONNECTOR
QS3VHXXX
RAM
BUS
Hot-Swapping
6
IDTQS3VH800
2.5V / 3.3V 10-BIT HIGH BANDWIDTH BUS SWITCH WITH PRECHARGED OUTPUTS
INDUSTRIAL TEMPERATURE RANGE
TEST CIRCUITS AND WAVEFORMS
TEST CONDITIONS
(1)
(2)
Symbol
VCC = 3.3V ± 0.3V
VCC = 2.5V ± 0.2V
Unit
VLOAD
6
2 x Vcc
V
VIH
3
Vcc
V
VT
1.5
VCC/2
V
VLZ
300
150
mV
VHZ
300
150
mV
CL
50
30
pF
SAME PHASE
INPUT TRANSITION
tPLH
tPHL
tPLH
tPHL
OUTPUT
VIH
VT
0V
VOH
VT
VOL
VIH
VT
0V
OPPOSITE PHASE
INPUT TRANSITION
Propagation Delay
VLOAD
VCC
500Ω
Pulse(1, 2)
Generator
VIN
CONTROL
INPUT
GND
tPZL
VOUT
D.U.T.
RT
DISABLE
ENABLE
Open
OUTPUT
SWITCH
NORMALLY CLOSED
LOW
tPZH
OUTPUT SWITCH
NORMALLY
OPEN
HIGH
500Ω
CL
tPLZ
VLOAD/2
VT
tPHZ
VT
0V
VIH
VT
0V
VLOAD/2
VOL + VLZ
VOL
VOH
VOH -VHZ
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
Switch
tPLZ/tPZL
VLOAD
tPHZ/tPZH
GND
tPD
Open
7
IDTQS3VH800
2.5V / 3.3V 10-BIT HIGH BANDWIDTH BUS SWITCH WITH PRECHARGED OUTPUTS
INDUSTRIAL TEMPERATURE RANGE
ORDERING INFORMATION
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.
CORPORATE HEADQUARTERS
6024 Silver Creek Valley Road
San Jose, CA 95138
for SALES:
800-345-7015 or 408-284-8200
fax: 408-284-2775
www.idt.com
8
for Tech Support:
logichelp@idt.com
IMPORTANT NOTICE AND DISCLAIMER
RENESAS ELECTRONICS CORPORATION AND ITS SUBSIDIARIES (“RENESAS”) PROVIDES TECHNICAL
SPECIFICATIONS AND RELIABILITY DATA (INCLUDING DATASHEETS), DESIGN RESOURCES (INCLUDING
REFERENCE DESIGNS), APPLICATION OR OTHER DESIGN ADVICE, WEB TOOLS, SAFETY INFORMATION, AND
OTHER RESOURCES “AS IS” AND WITH ALL FAULTS, AND DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED,
INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
PARTICULAR PURPOSE, OR NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY RIGHTS.
These resources are intended for developers skilled in the art designing with Renesas products. You are solely responsible
for (1) selecting the appropriate products for your application, (2) designing, validating, and testing your application, and (3)
ensuring your application meets applicable standards, and any other safety, security, or other requirements. These
resources are subject to change without notice. Renesas grants you permission to use these resources only for
development of an application that uses Renesas products. Other reproduction or use of these resources is strictly
prohibited. No license is granted to any other Renesas intellectual property or to any third party intellectual property.
Renesas disclaims responsibility for, and you will fully indemnify Renesas and its representatives against, any claims,
damages, costs, losses, or liabilities arising out of your use of these resources. Renesas' products are provided only subject
to Renesas' Terms and Conditions of Sale or other applicable terms agreed to in writing. No use of any Renesas resources
expands or otherwise alters any applicable warranties or warranty disclaimers for these products.
(Rev.1.0 Mar 2020)
Corporate Headquarters
Contact Information
TOYOSU FORESIA, 3-2-24 Toyosu,
Koto-ku, Tokyo 135-0061, Japan
www.renesas.com
For further information on a product, technology, the most
up-to-date version of a document, or your nearest sales
office, please visit:
www.renesas.com/contact/
Trademarks
Renesas and the Renesas logo are trademarks of Renesas
Electronics Corporation. All trademarks and registered
trademarks are the property of their respective owners.
© 2020 Renesas Electronics Corporation. All rights reserved.