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QS3VH245PA 데이터시트 PDF




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QS3VH245PA 데이터시트, 핀배열, 회로
IDTQS3VH245
2.5V / 3.3V 8-BIT HIGH BANDWIDTH BUS SWITCH
QUICKSWITCH® PRODUCTS
2.5V / 3.3V 8-BIT HIGH
BANDWIDTH BUS SWITCH
INDUSTRIALTEMPERATURERANGE
IDTQS3VH245
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 - 4typical
• 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 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
• Bus switching and isolation
FUNCTIONAL BLOCK DIAGRAM
DESCRIPTION:
TheQS3VH245 HotSwitch8-bitbusswitchisahighbandwidthbusswitch.
The QS3VH245 has very low ON resistance, resulting in under 250ps
propagation delay through the switch. The switches can be turned ON under
thecontroloftheLVTTL-compatibleOutputEnable signalforbidirectionaldata
flow with no added delay or ground bounce. In the ON state, the switches can
passsignalsupto5V. IntheOFFstate,theswitchesofferveryhighimpedence
at the terminals.
The combination of near-zero propagation delay, high OFF impedance, and
over-voltage tolerance makes the QS3VH245 ideal forhigh performance
communicationsapplications.
The QS3VH245 is characterized for operation from -40°C to +85°C.
A0 A1 A2 A3 A4 A5 A6 A7
OE
B0 B1 B2 B3 B4 B5 B6 B7
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
c 2003 Integrated Device Technology, Inc.
1
MARCH 2003
DSC-5775/6
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QS3VH245PA pdf, 반도체, 판매, 대치품
IDTQS3VH245
2.5V / 3.3V 8-BIT HIGH BANDWIDTH BUS SWITCH
INDUSTRIALTEMPERATURERANGE
POWER SUPPLY CHARACTERISTICS
Symbol
Parameter
Test Conditions(1)
ICCQ Quiescent Power Supply Current
VCC = Max., VIN = GND or VCC, f = 0
ICC Power Supply Current (2,3) per Input HIGH VCC = Max., VIN = 3V, f = 0 per Control Input
ICCD Dynamic Power Supply Current (4)
VCC = 3.3V, A and B Pins Open, Control Inputs
Toggling @ 50% Duty Cycle
Min. Typ. Max. Unit
— 1 3 mA
— — 30 µA
See Typical ICCD vs Enable Frequency graph below
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 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 A and B 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
12
10
8
6
4
2
0
0 2 4 6 8 10 12 14 16 18 20
ENABLE FREQUENCY (MHZ)
4
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QS3VH245PA 전자부품, 판매, 대치품
IDTQS3VH245
2.5V / 3.3V 8-BIT HIGH BANDWIDTH BUS SWITCH
TEST CIRCUITS AND WAVEFORMS
INDUSTRIALTEMPERATURERANGE
TEST CONDITIONS
Symbol
VCC(1)= 3.3V ± 0.3V
VLOAD
6
VIH 3
VT 1.5
VLZ 300
VHZ 300
CL 50
VCC(2)= 2.5V ± 0.2V
2 x Vcc
Vcc
VCC/2
150
150
30
Unit
V
V
V
mV
mV
pF
SAME PHASE
INPUT TRANSITION
OUTPUT
tPLH
OPPOSITE PHASE
INPUT TRANSITION
tPLH
tPHL
tPHL
Propagation Delay
VIH
VT
0V
VOH
VT
VOL
VIH
VT
0V
Pulse(1, 2)
Generator
V IN
VCC
VOUT
D.U.T.
500
VLOAD
Open
GND
RT
500
CL
Test Circuits for All Outputs
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.
CONTROL
IN P U T
ENABLE
tPZL
D IS A B L E
tPLZ
OUTPUT
SW ITC H
NORMALLY CLOSED
LOW
tPZH
OUTPUT SWITCH
NORMALLY OPEN
H IG H
V LO AD /2
VT
tPHZ
VT
0V
VIH
VT
0V
VLOAD/2
VOL + VLZ
VOL
VOH
VOH -V HZ
0V
NOTE:
1. Diagram shown for input Control Enable-LOW and input Control Disable-HIGH.
Enable and Disable Times
SWITCH POSITION
Test
tPLZ/tPZL
tPHZ/tPZH
tPD
Switch
VLOAD
GND
Open
7
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