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PDF IDTQS3VH16245 Data sheet ( Hoja de datos )
| Número de pieza | IDTQS3VH16245 | |
| Descripción | QUICKSWITCH PRODUCTS 2.5V / 3.3V 16-BIT HIGH BANDWIDTH BUS SWITCH | |
| Fabricantes | Integrated Device Technology | |
| Logotipo |  |
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IDTQS3VH16245
2.5V / 3.3V 16-BIT HIGH BANDWIDTH BUS SWITCH
QUICKSWITCH® PRODUCTS
2.5V / 3.3V 16-BIT HIGH
BANDWIDTH BUS SWITCH
INDUSTRIALTEMPERATURERANGE
IDTQS3VH16245
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
• Low RON - 4Ω typical
• 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 SSOP and TSSOP packages
APPLICATIONS:
• Hot-swapping
• 10/100 Base-T, Ethernet LAN switch
• Low distortion analog switch
• Replaces mechanical relay
• ATM 25/155 switching
FUNCTIONAL BLOCK DIAGRAM
DESCRIPTION:
The QS3VH16245 HotSwitch is a 16-bit high bandwidth bus switch. The
QS3VH16245 has very low ON resistance, resulting in under 250ps
propagation delay through the switch. The switches can be turned ON under
the control of the LVTTL-compatible Output Enable signals (OEx) for bidirec-
tional 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 near-zero propagation delay, high OFF impedance, and
over-voltage tolerance makes the QS3VH16245 ideal for high performance
communicationsapplications.
The QS3VH16245 is characterized for operation from -40°C to +85°C.
OE1
A0 A1 A2 A3 A4 A5 A6 A7
OE2
B0 B1 B2 B3 B4 B5 B6 B7
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
c 2002 Integrated Device Technology, Inc.
1
A8 A9 A10 A11 A12 A13 A14 A15
B8 B9 B10 B11 B12 B13 B14 B15
MARCH 2002
DSC-5876/4
1 page  
IDTQS3VH16245
2.5V / 3.3V 16-BIT HIGH BANDWIDTH BUS SWITCH
INDUSTRIALTEMPERATURERANGE
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
Parameter
Data Propagation Delay(2,3)
Min. (4)
Max.
0.2
Min. (4)
Max. Unit
0.2 ns
tPHL Ax to/from Bx
tPZH Switch Turn-On Delay
1.5 8 1.5 8 ns
tPZL OEx to Ax/Bx
tPHZ Switch Turn-Off Delay
1.5 7.5 1.5 7.5 ns
tPLZ OEx to Ax/Bx
fOEx Operating Frequency - Enable (2,5) 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 OEx control input (pass voltage > VCC, VIN = 5V, RLOAD > 1MΩ, no CLOAD).
5
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet IDTQS3VH16245.PDF ] | |
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