IDTQS3VH16211
2.5V / 3.3V 24-BIT HIGH BANDWIDTH BUS SWITCH
INDUSTRIAL TEMPERATURE RANGE
QUICKSWITCH® PRODUCTS
2.5V / 3.3V 24-BIT HIGH
BANDWIDTH BUS SWITCH
FEATURES:
IDTQS3VH16211
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
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 500 MHz
• LVTTL-compatible control Inputs
• Undershoot Clamp Diodes on all switch and control Inputs
• Low I/O capacitance, 4pF typical
• Available in TSSOP package
The QS3VH16211 HotSwitch is a 24-bit high bandwidth bus switch. The
QS3VH16211 has very low ON resistance, resulting in under 250ps
propagation delay through the switch. This device operates as a 24-bit bus
switch. When 1OE is low, 1An is connected to 1Bn. When 2OE is low, 2An
is connected to 2Bn. In the OFF and ON states, the switches are 5V-tolerant.
In the OFF state, the switches offer very high impedance at the terminals.
The combination of near-zero propagation delay, high OFF impedance,
and over-voltage tolerance makes the QS3VH16211 ideal for high performance communications applications. It is also suitable for switching wide
digital buses.
The QS3VH16211 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
1A1
1B1
2A1
2B1
1A12
1B12
2A12
2B12
2OE
1OE
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
c
2013 Integrated Device Technology, Inc.
JANUARY 2013
1
DSC-5883/7
IDTQS3VH16211
2.5V / 3.3V 24-BIT HIGH BANDWIDTH BUS SWITCH
INDUSTRIAL TEMPERATURE RANGE
ABSOLUTE MAXIMUM RATINGS(1)
PIN CONFIGURATION
NC
1A1
1A2
56
1
55
2
1OE
2OE
Symbol
Description
Max.
Unit
VTERM(2)
Supply Voltage 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
–3
V
120
mA
-65 to +150
°C
3
54
1B1
1A3
4
53
1B2
1A4
5
52
1B3
1A5
6
51
1B4
1A6
7
50
1B5
GND
8
49
GND
1A7
9
48
1B6
1A8
10
47
1B7
1A9
11
46
1B8
1A10
12
45
1B9
1A11
13
44
1B10
Symbol
Parameter(1)
Typ.
Max.
Unit
1A12
14
43
1B11
CIN
Control Inputs
3
5
pF
2A1
15
42
1B12
CI/O
Quickswitch Channels (Switch OFF)
4
6
pF
2A2
16
41
2B1
CI/O
Quickswitch Channels (Switch ON)
8
12
pF
VAC
AC Input Voltage (pulse width ≤20ns)
IOUT
DC Output Current (max. current/pin)
TSTG
Storage Temperature
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
o
(TA = +25 C, f = 1MHz, VIN = 0V, VOUT = 0V)
NOTE:
1. This parameter is guaranteed but not production tested.
VCC
17
40
2B2
2A3
18
39
2B3
GND
19
38
GND
2A4
20
37
2B4
2A5
21
36
2B5
Pin Names
I/O
2A6
22
35
2B6
xA1 - xA12
I/O
Bus A
2A7
23
34
2B7
xB1 - xB12
I/O
Bus B
2A8
24
33
2B8
2A9
25
32
2B9
2A10
26
31
2B10
2A11
27
30
2B11
2A12
28
29
2B12
PIN DESCRIPTION
1OE
- 2OE
I
Description
Data Select
FUNCTION TABLE(1)
1OE
TSSOP
TOP VIEW
2OE
1Ax
2Ax
Function
L
L
1 Bx
2 Bx
1Ax
to 1Bx, 2Ax to 2Bx
L
H
1 Bx
Z
1Ax
to 1Bx
H
L
Z
2 Bx
2Ax
to 2Bx
H
H
Z
Z
NOTE:
1. H = HIGH Voltage Level
L = LOW Voltage Level
Z = High-Impedence
2
Disconnect
IDTQS3VH16211
2.5V / 3.3V 24-BIT HIGH BANDWIDTH BUS SWITCH
INDUSTRIAL TEMPERATURE RANGE
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE(1)
Following Conditions Apply Unless Otherwise Specified:
Industrial: TA = –40°C to +85°C, VCC = 3.3V ± 0.3V
Symbol
VIH
Parameter
Test Conditions
Input HIGH Voltage
VIL
Input LOW Voltage
IIN
Input Leakage Current (Control Inputs)
I OZ
IOFF
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
—
—
Guaranteed Logic HIGH
VCC = 2.3V to 2.7V
—
—
0.7
for Control Inputs
VCC = 2.7V to 3.6V
—
V
—
0.8
—
—
±1
μA
Off-State Current (Hi-Z)
≤ VCC
0V ≤ VOUT ≤ 5V, Switches OFF
—
—
±1
μA
Data Input/Output Power Off Leakage
VIN or VOUT 0V to 5V, VCC = 0V
—
—
±1
μA
ION = 30mA
—
6
8
(Typ. 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
0V ≤ VIN
VCC = 2.3V
RON
Min.
Switch ON Resistance
VIN = 0V
NOTE:
1. Typical values are at VCC = 3.3V and TA = 25°C, unless otherwise noted.
TYPICAL ON RESISTANCE vs VIN AT VCC = 3.3V
16
R ON
14
(ohms)
12
10
8
6
4
2
0
0.0
0.5
1.0
1.5
2.0
2.5
V IN
(Volts)
3
3.0
3.5
4.0
4.5
5.0
Ω
IDTQS3VH16211
2.5V / 3.3V 24-BIT HIGH BANDWIDTH BUS SWITCH
INDUSTRIAL TEMPERATURE RANGE
POWER SUPPLY CHARACTERISTICS
Parameter
Test Conditions(1)
ICCQ
Quiescent Power Supply Current
VCC = Max., VIN = GND or VCC, f = 0
ΔICC
Power Supply Current
ICCD
Dynamic Power Supply Current(4)
Symbol
(2,3)
per Input HIGH
VCC = Max., VIN = 3V, f = 0 per Control Input
VCC = 3.3V, A and B Pins Open, Control Inputs
Min.
Typ.
Max.
Unit
—
1.5
3
mA
—
—
30
μA
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 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 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
20
18
16
14
ICCD (mA)
12
10
8
6
4
2
0
0
2
4
6
8
10
12
ENABLE FREQUENCY (MHz)
4
14
16
18
20
IDTQS3VH16211
2.5V / 3.3V 24-BIT HIGH BANDWIDTH BUS SWITCH
INDUSTRIAL TEMPERATURE RANGE
SWITCHING CHARACTERISTICS OVER OPERATING RANGE
TA = -40°C to +85°C
VCC = 2.5 ± 0.2V (1)
Symbol
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
fxOE
Parameter
Data Propagation Delay(2,3)
xAx to xBx or xBx to xAx
Switch Turn-On Delay
xOE to xAx or xBx
Switch Turn-Off Delay
xOE to xAx or xBx
Operating Frequency - Enable (2,5)
Min. (4)
⎯
VCC = 3.3 ± 0.3V (1)
Max.
Min. (4)
Max.
Unit
0.2
⎯
0.2
ns
1.5
9
1.5
9
ns
1.5
8.5
1.5
8.5
ns
⎯
7.5
⎯
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).
5
IDTQS3VH16211
2.5V / 3.3V 24-BIT HIGH BANDWIDTH BUS SWITCH
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
Hot Swapping
6
BUS
IDTQS3VH16211
2.5V / 3.3V 24-BIT HIGH BANDWIDTH BUS SWITCH
INDUSTRIAL TEMPERATURE RANGE
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
SAME PHASE
INPUT TRANSITION
VIH
3
Vcc
V
OUTPUT
VT
1.5
VCC/2
V
VLZ
300
150
mV
VHZ
300
150
mV
CL
50
30
pF
tPLH
tPHL
tPLH
tPHL
VIH
VT
0V
VOH
VT
VOL
VIH
VT
0V
OPPOSITE PHASE
INPUT TRANSITION
Propagation Delay
VLOAD
VCC
500Ω
(1, 2)
Pulse
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
Test Circuits for All Outputs
SWITCH POSITION
tPLZ/tPZL
VLOAD
tPHZ/tPZH
GND
tPD
Open
tPHZ
V
T
0V
Enable and Disable Times
NOTES:
1. Pulse Generator for All Pulses: Rate ≤ 1.0MHz; tF ≤ 2.5ns; tR ≤ 2.5ns.
2. Pulse Generator for All Pulses: Rate ≤ 1.0MHz; tF ≤ 2ns; tR ≤ 2ns.
Switch
VLOAD/2
VT
VLOAD/2
VOL + VLZ
VOL
VOH
VOH -VHZ
0V
NOTE:
1. Diagram shown for input Control Enable-LOW and input Control Disable-HIGH.
DEFINITIONS:
CL = Load capacitance: includes jig and probe capacitance.
RT = Termination resistance: should be equal to ZOUT of the Pulse Generator.
Test
tPLZ
VIH
VT
0V
7
IDTQS3VH16211
2.5V / 3.3V 24-BIT HIGH BANDWIDTH BUS SWITCH
INDUSTRIAL TEMPERATURE RANGE
ORDERING INFORMATION
QS
XXXXX
XX
Package
Device Type
X
Blank
8
Tube or Tray
Tape and Reel
PAG
Thin Shrink Small Outline Package - TSSOP Green
3VH16211
2.5V / 3.3V 24-Bit High Bandwidth Bus Switch
Datasheet Document History
01/31/13
Pg. 1, 8
Updated the Ordering Information by removing non green package version, the “IDT” notation and
Adding Tape and Reel information.
8
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