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PDF IDTQS34XVH2245 Data sheet ( Hoja de datos )
| Número de pieza | IDTQS34XVH2245 | |
| Descripción | 2.5V / 3.3V 32-BIT HIGH BANDWIDTH BUS SWITCH | |
| Fabricantes | Integrated Device Technology | |
| Logotipo |  |
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IDTQS34XVH2245
2.5V / 3.3V 32-BIT HIGH BANDWIDTH BUS SWITCH
INDUSTRIAL TEMPERATURE RANGE
QUICKSWITCH® PRODUCTS
2.5V / 3.3V 32-BIT HIGH
BANDWIDTH BUS SWITCH
IDTQS34XVH2245
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
• 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
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
DESCRIPTION:
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.
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.
A16 A17 A18 A19 A20 A21 A22 A23
OE1
OE3
B0 B1 B2 B3 B4 B5 B6 B7
A8 A9 A10 A11 A12 A13 A14 A15
B16 B17 B18 B19 B20 B21 B22 B23
A24 A25 A26 A27 A28 A29 A30 A31
OE2
OE4
B8 B9 B10 B11 B12 B13 B14 B15
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
c 2012 Integrated Device Technology, Inc.
1
B24 B25 B26 B27 B28 B29 B30 B31
JANUARY 2013
DSC-5592/14
1 page  
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)
Symbol
tPLH
tPHL
tPZL
tPZH
Parameter
Data Propagation Delay(2,3)
Ax to/from Bx
Switch Turn-On Delay
OEx to Ax/Bx
Min. (4)
⎯
1.5
Max.
Min. (4)
0.9 ⎯
9 1.5
Max.
1.35
8
tPLZ Switch Turn-Off Delay
tPHZ OEx to Ax/Bx
1.5
7.5 1.5
7.5
fOEx Operating Frequency - Enable(2,5)
⎯
10 ⎯
20
Unit
ns
ns
ns
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
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet IDTQS34XVH2245.PDF ] | |
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