IDT IDTQS3VH251QG

IDTQS3VH251
2.5V / 3.3V QUAD 8:1 MUX/DEMUX HIGH BANDWIDTH BUS SWITCH
INDUSTRIAL TEMPERATURE RANGE
QUICKSWITCH® PRODUCTS 2.5V
/ 3.3V 8:1 MUX/DEMUX HIGH
BANDWIDTH BUS SWITCH
FEATURES:
IDTQS3VH251
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 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
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 performance
comminucation applications.
The QS3VH251 is characterized for operation from -40°C to +85°C.
APPLICATIONS:
•
•
•
•
•
Hot-swapping
Multiplexing/demultiplexing
Low distortion analog switch
Replaces mechanical relay
ATM 25/155 switching
FUNCTIONAL BLOCK DIAGRAM
S0
S1
S2
E
I0
I1
I2
I3
Y
I4
I5
I6
I7
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
AUGUST 2002
1
c
2002 Integrated Device Technology, Inc.
DSC-5944/7
IDTQS3VH251
2.5V / 3.3V QUAD 8:1 MUX/DEMUX HIGH BANDWIDTH BUS SWITCH
ABSOLUTE MAXIMUM RATINGS(1)
PIN CONFIGURATION
I3
Symbol
1
16
2
I2
INDUSTRIAL TEMPERATURE RANGE
15
VCC
I4
I1
3
14
I5
I0
4
13
I6
Y
5
12
I7
NC
6
11
S0
E
GND
7
8
10
9
S1
S2
Max
Unit
SupplyVoltage to Ground
–0.5 to +4.6
V
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
VTERM(2)
VTERM(3)
Description
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 (TA = +25°C, F = 1MHz, VIN = 0V, VOUT = 0V)
Parameter(1)
Symbol
Typ.
CIN
Control Inputs
CI/O
Quickswitch Channels
(Switch OFF)
QSOP/ TSSOP
TOP VIEW
CI/O
Quickswitch Channels
(Switch ON)
Demux
25
28
Mux
20
28
PIN DESCRIPTION
S1
S0
Y
Function
H
X
X
X
Z
Disable
L
L
L
L
I0
S2 - S0 = 0
L
L
L
H
I1
S2 - S0 = 1
E
I
Enable Input
Y
O
Data Outputs
H
L
I2
S2 - S0 = 2
L
L
H
H
I3
S2 - S0 = 3
L
H
L
L
I4
S2 - S0 = 4
L
H
L
H
I5
S2 - S0 = 5
L
H
H
L
I6
S2 - S0 = 6
L
H
H
H
I7
S2 - S0 = 7
NOTE:
1. H = HIGH Voltage Level
L = LOW Voltage Level
X = Don't Care
Z = High-Impedence
2
pF
pF
19
S2
L
5
6
20
E
L
3
Mux
FUNCTION TABLE(1)
Pin Names
I/O
Description
I0 - I7
I
Data Inputs
S0 - S 2
I
Select Input
Unit
4
Demux
NOTE:
1. This parameter is guaranteed but not production tested.
Select
Max.
pF
IDTQS3VH251
2.5V / 3.3V QUAD 8:1 MUX/DEMUX HIGH BANDWIDTH BUS SWITCH
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
Parameter
Test Conditions
Input HIGH Voltage
Input LOW Voltage
IIN
Input Leakage Current (Control Inputs)
Min.
Typ.(1) Max.
Unit
Guaranteed Logic HIGH
VCC = 2.3V to 2.7V
1.7
—
—
for Control Inputs
VCC = 2.7V to 3.6V
2
—
—
V
Guaranteed Logic LOW
VCC = 2.3V to 2.7V
—
—
0.7
for Control Inputs
VCC = 2.7V to 3.6V
—
—
0.8
0V ≤ VIN ≤ VCC
—
—
±1
µA
V
IOZ
Off-State Current (Hi-Z)
0V ≤ VOUT ≤ 5V, Switches OFF
—
—
±1
µA
I OFF
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
VCC = 3V
VIN = 0V
ION = 30mA
—
4
6
VIN = 2.4V
ION = 15mA
—
5
8
Ω
NOTE:
1. Typical values are at VCC = 3.3V and TA = 25°C.
TYPICAL ON RESISTANCE vs VIN AT VCC = 3.3V
16
14
R ON
12
(ohms)
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
IDTQS3VH251
2.5V / 3.3V QUAD 8:1 MUX/DEMUX HIGH BANDWIDTH BUS SWITCH
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
—
1
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
VCC = 3.3V, A and B Pins Open, Control Inputs
(4)
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 ∆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 mux/demux 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
6
ICCD (mA)
4
2
0
0
2
4
6
8
10
12
ENABLE FREQUENCY (MHz)
4
14
16
18
20
IDTQS3VH251
2.5V / 3.3V QUAD 8:1 MUX/DEMUX 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
tSEL
tPZH
tPZL
tPHZ
tPLZ
tPZH
tPZL
tPHZ
tPLZ
Parameter
Data Propagation Delay(2,3)
Y to Ix or Ix to Y
Select Time
Sx to Y
Enable Time
S to Ix
Disable Time
S to Ix
Enable Time
E to Y or Ix
Disable Time
E to Y or Ix
fEorSx
Operating Frequency - Enable(2,5)
Min. (4)
VCC = 3.3 ± 0.3V (1)
⎯
Max.
0.2
Min. (4)
⎯
Max.
0.2
Unit
ns
1.5
9
1.5
8
ns
1.5
9
1.5
9
ns
1.5
8
1.5
8
ns
1.5
9
1.5
8
ns
1.5
8
1.5
8
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 Sx or E control input (pass voltage > VCC, VIN = 5V, RLOAD ≥ 1MΩ, no CLOAD).
5
IDTQS3VH251
2.5V / 3.3V QUAD 8:1 MUX/DEMUX HIGH BANDWIDTH BUS SWITCH
SOME APPLICATIONS FOR HOTSWITCH PRODUCTS
Rail-to-Rail Switching
Multiplexing/Demultiplexing
Hot-Swapping
6
INDUSTRIAL TEMPERATURE RANGE
IDTQS3VH251
2.5V / 3.3V QUAD 8:1 MUX/DEMUX HIGH BANDWIDTH BUS SWITCH
INDUSTRIAL TEMPERATURE RANGE
TEST CIRCUITS AND WAVEFORMS
TEST CONDITIONS
Symbol
VCC = 3.3V ± 0.3V
VCC = 2.5V ± 0.2V
Unit
VLOAD
6
2 x Vcc
V
VIH
3
Vcc
V
(1)
(2)
VT
1.5
VCC/2
V
VLZ
300
150
mV
VHZ
300
150
mV
CL
50
30
pF
SAM E PHASE
INPUT TRANSITION
tPLH
t PHL
t PLH
tPHL
OUTPUT
V IH
VT
0V
V OH
VT
V OL
V IH
VT
0V
O PPOSITE PHASE
INPUT TRANSITION
Propagation Delay
V LOAD
V CC
500 Ω
(1, 2)
Pulse
Generator
V IN
CONTRO L
INPUT
G ND
t PZL
V OUT
D.U.T.
RT
DISABLE
ENABLE
Open
OUTPUT
SW ITCH
NORMALLY
CLO SED
LOW
tPZ H
OUTPUT SW ITCH
NORMALLY
OPEN
HIGH
500 Ω
CL
tPLZ
V IH
VT
0V
V LOAD/2
V LO A D /2
VT
VOL
VOL
t PHZ
+
V LZ
VT
VOH
V O H -V H Z
0V
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
IDTQS3VH251
2.5V / 3.3V QUAD 8:1 MUX/DEMUX HIGH BANDWIDTH BUS SWITCH
INDUSTRIAL TEMPERATURE RANGE
ORDERING INFORMATION
IDTQS
XXXXX
Device Type
XX
Package
Q
QG
PA
Quarter Size Outline Package
QSOP - Green
Thin Shrink Small Outline Package
3VH251
2.5V / 3.3V 8:1 Mux/Demux High Bandwidth Bus Switch
DATA SHEET DOCUMENT HISTORY
8/6/2002
Updated according to PCN Logic-0206-11
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8
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