QS34XVH2245Q3G [IDT]
2.5V / 3.3V 32-BIT HIGH BANDWIDTH BUS SWITCH;
| 型号： | QS34XVH2245Q3G |
| 厂家： | 
INTEGRATED DEVICE TECHNOLOGY |
| 描述： | 2.5V / 3.3V 32-BIT HIGH BANDWIDTH BUS SWITCH |
| 文件： | 总8页 (文件大小：270K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
QUICKSWITCH® PRODUCTS
IDTQS34XVH2245
2.5V / 3.3V 32-BIT HIGH
BANDWIDTH BUS SWITCH
FEATURES:
DESCRIPTION:
• N channel FET switches with no parasitic diode to VCC
– Isolation under power-off conditions
– No DC path to VCC or GND
The QS34XVH2245 is a high bandwidth, 32-bit bus switch. The
QS34XVH2245 with 25Ω resistance and 1.35ns propagation delay is
ideal for line matching and low noise environments. The switches can
be turned ON under the control of individual LVTTL-compatible Output
Enable (OEx) 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 impedance at the
terminals.
– 5V tolerant in OFF and ON state
• 5V tolerant I/Os
• 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
• LVTTL-compatible control Inputs
• Undershoot Clamp Diodes on all switch and control Inputs
• Low I/O capacitance, 4pF typical
• 25Ω resistors for low noise and line matching
• Available in 80-pin QVSOP package
The combination of small propagation delay, high OFF impedance,
and over-voltage tolerance makes the QS34XVH2245 ideal for high
performance communications applications.
The QS34XVH2245 is characterized for operation from -40°C to
+85°C.
APPLICATIONS:
• Hot-swapping
• Low distortion analog switch
• Replaces mechanical relay
• ATM 25/155 switching
FUNCTIONAL BLOCK DIAGRAM
A0 A1 A2 A3
A4 A5 A6 A7
A16 A17 A18 A19 A20 A21 A22 A23
OE1
OE3
B16 B17 B18 B19 B20 B21 B22 B23
A24 A25 A26 A27 A28 A29 A30 A31
B0 B1 B2 B3
B4 B5 B6 B7
A8 A9 A10 A11 A12 A13 A14 A15
OE2
OE4
B24 B25 B26 B27 B28 B29 B30 B31
B8 B9 B10 B11 B12 B13 B14 B15
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
JANUARY 2013
1
c 2012 Integrated Device Technology, Inc.
DSC-5592/14
IDTQS34XVH2245
INDUSTRIAL TEMPERATURE RANGE
2.5V / 3.3V 32-BIT HIGH BANDWIDTH BUS SWITCH
ABSOLUTE MAXIMUM RATINGS(1)
PIN CONFIGURATION
Symbol
Description
Max
–0.5 to +4.6
–0.5 to +5.5
–0.5 to +5.5
–3
Unit
V
(2)
VTERM
SupplyVoltage to Ground
DC Switch Voltage VS
(3)
1
2
3
VTERM
V
NC
80
79
78
77
Vcc
OE
(3)
VTERM
DC Input Voltage VIN
V
A0
A1
A2
A3
1
VAC
IOUT
AC Input Voltage (pulse width ≤20ns)
DC Output Current (max. sink current/pin)
Storage Temperature
V
B0
B1
B2
B3
B4
B5
B6
B7
120
mA
°C
4
5
6
TSTG
–65 to +150
76
NOTES:
A4
A5
A6
A7
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.
75
74
73
7
8
9
72
71
70
69
68
2. VCC terminals.
3. All terminals except VCC .
10
GND
NC
11
12
13
14
15
16
17
18
Vcc
OE
A8
2
A9
B
B
B
B
B
B
B
B
8
CAPACITANCE (TA = +25°C, F = 1MHz, VIN = 0V, VOUT =
9
A10
A11
A12
A13
67
66
65
Parameter(1)
Typ.
Max. Unit
0V)
Symbol
10
11
CIN
Control Inputs
3
4
8
5
6
pF
pF
pF
CI/O
CI/O
Quickswitch Channels (Switch OFF)
Quickswitch Channels (Switch ON)
12
13
14
15
64
12
A
14
15
63
62
NOTE:
1. This parameter is guaranteed but not production tested.
19
A
GND
NC
20
21
22
23
24
25
26
27
28
29
61
60
59
58
57
56
Vcc
OE
A16
A17
A18
A19
3
PIN DESCRIPTION
B16
B17
B18
B19
B20
B21
B22
B23
Pin Names
I/O
I
Description
Output Enable
OEx
Ax
I/O
I/O
Bus A
Bus B
A20
A21
A22
A23
55
54
53
52
Bx
30
31
32
GND
NC
FUNCTION TABLE(1)
51
50
Vcc
OE
OEx
Function
A
24
25
49
4
H
L
Disconnected
Connect (Ax = Bx)
33
A
48
47
46
B24
B25
B26
B27
B28
B29
B30
B31
34
35
A
26
27
NOTE:
1. H = HIGH Voltage Level
L = LOW Voltage Level
A
36
37
38
39
40
A
28
29
45
44
43
42
41
A
A
30
31
A
GND
QVSOP
TOP VIEW
2
IDTQS34XVH2245
2.5V / 3.3V 32-BIT 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
Parameter
Input HIGH Voltage
Test Conditions
Min.
1.7
2
Typ.(1) Max.
Unit
VIH
Guaranteed Logic HIGH
VCC = 2.3V to 2.7V
VCC = 2.7V to 3.6V
VCC = 2.3V to 2.7V
VCC = 2.7V to 3.6V
—
—
—
—
—
—
—
27
28
25
26
—
—
V
for Control Inputs
Guaranteed Logic LOW
for Control Inputs
0V ≤ VIN ≤ VCC
VIL
Input LOW Voltage
—
0.7
0.8
±1
±1
±1
39
41
38
40
V
—
IIN
IOZ
Input Leakage Current (Control Inputs)
Off-State Current (Hi-Z)
—
μA
μA
μA
0V ≤ VOUT ≤ 5V, Switches OFF
VIN or VOUT 0V to 5V, VCC = 0V
VCC = 2.3V
—
IOFF
Data Input/Output Power Off Leakage
—
VIN = 0V
ION = 30mA
ION = 15mA
ION = 30mA
ION = 15mA
18
18
18
18
RON
Switch ON Resistance
Typical at VCC = 2.5V
VCC = 3V
VIN = 1.7V
VIN = 0V
Ω
VIN = 2.4V
NOTE:
1. Typical values are at VCC = 3.3V and TA = 25°C.
IN
CC
TYPICAL ON RESISTANCE vs V AT V
= 3.3V
40
35
30
25
RON
(ohms)
20
15
10
5
0
5
3
3.5
4
4.5
0
0.5
1
1.5
2
2.5
VIN
(Volts)
3
IDTQS34XVH2245
INDUSTRIAL TEMPERATURE RANGE
2.5V / 3.3V 32-BIT HIGH BANDWIDTH BUS SWITCH
POWER SUPPLY CHARACTERISTICS
Symbol
ICCQ
Parameter
Test Conditions(1)
Min.
—
Typ.
8
Max.
16
Unit
mA
μA
Quiescent Power Supply Current
Power Supply Current (2,3) per Input HIGH
Dynamic Power Supply Current per Output
Enable Control Input(4)
VCC = Max., VIN = GND or VCC, f = 0
VCC = Max., VIN = 3V, f = 0 per Control Input
ΔICC
—
—
30
ICCD
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 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.
CCD
CC
TYPICAL I
vs ENABLE FREQUENCY CURVE AT V
= 3.3V
ENABLE FREQUENCY (MHz)
4
IDTQS34XVH2245
2.5V / 3.3V 32-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)
VCC = 3.3 ± 0.3V (1)
(4)
(4)
Symbol
tPLH
tPHL
tPZL
tPZH
Parameter
Data Propagation Delay(2,3)
Ax to/from Bx
Switch Turn-On Delay
OEx to Ax/Bx
Switch Turn-Off Delay
OEx to Ax/Bx
Operating Frequency - Enable(2,5)
Min.
Max.
Min.
Max.
Unit
⎯
1.5
1.5
⎯
0.9
⎯
1.35
ns
9
1.5
1.5
8
ns
ns
tPLZ
tPHZ
7.5
7.5
fOEx
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 1.35ns 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 OEx control input (pass voltage > VCC, VIN = 5V, RLOAD ≥ 1MΩ, no CLOAD).
5
IDTQS34XVH2245
INDUSTRIAL TEMPERATURE RANGE
2.5V / 3.3V 32-BIT HIGH BANDWIDTH BUS SWITCH
SOME APPLICATIONS FOR HOTSWITCH PRODUCTS
NFET
0 to +5V
0 to +5V
+6.5V
Vcc = 3.3V
CHARGE PUMP
DRIVER
OE
SINGLE HOT
SWITCH
Rail-to-Rail Switching
ZERO DOWN TIME SYSTEM
PLUGGABLE CARD/ LIVE SYSTEM
ON CARD
CARD I/O
CPU
RAM
LOGIC
ON CARD
LOGIC
CARD I/O
BUS
Hot-Swapping
6
IDTQS34XVH2245
2.5V / 3.3V 32-BIT HIGH BANDWIDTH BUS SWITCH
INDUSTRIAL TEMPERATURE RANGE
TEST CIRCUITS AND WAVEFORMS
TEST CONDITIONS
V
V
0V
IH
T
SAME PHASE
INPUT TRANSITION
Symbol
VLOAD
VIH
VCC(1)= 3.3V ± 0.3V
VCC(2)= 2.5V ± 0.2V
Unit
t
PHL
t
PLH
V
V
V
OH
6
2 x Vcc
Vcc
V
OUTPUT
T
3
V
OL
t
PHL
tPLH
VT
1.5
300
300
50
VCC/2
150
V
V
IH
T
OPPOSITE PHASE
INPUT TRANSITION
V
VLZ
mV
mV
pF
0V
VHZ
150
CL
30
Propagation Delay
V
LOAD
VCC
DISABLE
ENABLE
VIH
Open
GND
CONTROL
INPUT
VT
500Ω
0V
tPZL
tPLZ
VIN
VOUT
(1, 2)
Pulse
Generator
V
LOAD/2
D.U.T.
V
V
V
LOAD/2
OUTPUT
NORMALLY
LOW
SWITCH
CLOSED
VT
OL +
OL
VLZ
500Ω
t
PHZ
R
T
tPZH
CL
V
OH
OUTPUT
NORMALLY
HIGH
SWITCH
OPEN
V
VOH -VHZ
T
0V
0V
Test Circuits for All Outputs
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.
Enable and Disable Times
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
tPLZ/tPZL
tPHZ/tPZH
tPD
Switch
VLOAD
GND
Open
7
IDTQS34XVH2245
INDUSTRIAL TEMPERATURE RANGE
2.5V / 3.3V 32-BIT HIGH BANDWIDTH BUS SWITCH
ORDERING INFORMATION
XXXXX
XX
QS
X
Package
Device Type
Blank
8
Tube or Tray
Tape and Reel
Q3G
80-Pin QVSOP - Green
2.5V / 3.3V 32-Bit High Bandwidth Bus Switch
34XVH2245
Datasheet Document History
09/01/08
Pg. 4, 8
Revise ICCQ Typ. and Max. Remove non green package version and updated the ordering
informationbyremovingthe“IDT”notation.
01/17/13
Pg. 5
UpdatedtheorderinginformationbyaddingTapeandReelinformation.
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fax: 408-284-2775
www.idt.com
8
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