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PDF IDTQS3VH383 Data sheet ( Hoja de datos )
| Número de pieza | IDTQS3VH383 | |
| Descripción | 2.5V/3.3V 8-BIT HIGH BANDWIDTH BUS EXCHANGE BUS SWITCH | |
| Fabricantes | Integrated Device Technology | |
| Logotipo |  |
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IDTQS3VH383
2.5V / 3.3V 8-BIT HIGH BANDWIDTH BUS EXCHANGE BUS SWITCH
INDUSTRIALTEMPERATURERANGE
QUICKSWITCH® PRODUCTS
2.5V/3.3V 8-BIT HIGH BANDWIDTH
BUS EXCHANGE BUS SWITCH
IDTQS3VH383
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 QSOP, SOIC, 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
A0
DESCRIPTION:
The QS3VH383 Bus Exchange HotSwitch with 10-bits is a high bandwidth
bus switch. The QS3VH383 has very low ON resistance, resulting in under
250pspropagationdelaythroughtheswitch. TheBusEnable(BE)signalturns
the switches on. The Bus Exchange (BX) signal provides nibble swap of the
AB and CD signal pairs. This exchange configuration allows byte swapping
of buses. In the OFF and ON states, the switches are 5V-tolerant. In the OFF
state, the switches offer very high impedence at the terminals.
The combination of near-zero propagation delay, the lack of additional
ground bounce noise, high OFF impedance, and over-voltage tolerance
makestheQS3VH383idealforhighperformancecommunicationsapplications.
The QS3VH383 is characterized for operation from -40°C to +85°C.
C0
B0 D0
A4 C4
B4 D4
BX
BE
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
c 2002 Integrated Device Technology, Inc.
1
APRIL 2002
DSC-5878/4
1 page  
IDTQS3VH383
2.5V / 3.3V 8-BIT HIGH BANDWIDTH BUS EXCHANGE 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 Parameter
Min. (4)
Max.
Min. (4)
Max.
Unit
tPLH DataPropagationDelay(2,3)
0.2
0.2 ns
tPHL Ax or Bx to Cx or Dx, Cx or Dx to Ax or Bx
tPZH Switch Turn-On Delay
1.5 8.5
1.5 8.5 ns
tPZL BE to Ax, Bx, Cx, Dx
tPHZ Switch Turn-Off Delay
1.5 8
1.5 8 ns
tPLZ BE to Ax, Bx, Cx, Dx
tPBX Bus Exchange Propagation Delay
1.5 8
1.5 7.5 ns
BX to Ax, Bx, Cx, Dx
fENABLE
Operating Frequency - Enable (BE ) (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 0.25ns 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 BE control input (pass voltage > VCC, VIN = 5V, RLOAD > 1MΩ, no CLOAD).
5
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet IDTQS3VH383.PDF ] | |
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