IDT IDTQS3R862Q Quickswitch-r products high-speed cmos 10-bit low resistance bus switch with active high and low enable Datasheet

IDTQS3R862
HIGH-SPEED CMOS 10-BIT LOW RESISTANCE BUS SWITCH
INDUSTRIAL TEMPERATURE RANGE
QUICKSWITCH® PRODUCTS
HIGH-SPEED CMOS 10-BIT LOW
RESISTANCE BUS SWITCH WITH
ACTIVE HIGH AND LOW ENABLES
FEATURES:
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IDTQS3R862
DESCRIPTION:
Enhanced N channel FET with no inherent diode to Vcc
Ω bidirectional switches connect inputs to outputs
2.5Ω
Zero propagation delay, zero ground bounce
Undershoot clamp diodes on all switch and control inputs
Active high and low enable controls
Bidirectional signal flow
Available in SOIC and QSOP packages
The QS3R862 provides a set of ten high-speed CMOS TTL-compatible
bus switches. The very low ON resistance (2.5Ω) of the QS3R862 allows
inputs to be connected to outputs without adding propagation delay and
without generating additional ground bounce noise. The switches are
controlled by active Low Enable (BE) and active High Enable (BE) controls.
The QS3R862 with 2.5Ω RON resistance is ideal for switching digital
buses as well as for hot-plugging, hot-swapping, and hot-docking applications. The low RON resistance of the QS3R862 makes it ideal for PCI,
Compact PCI, and VME hot-plugging applications.
The QS3R862 is characterized for operation at -40°C to +85°C.
APPLICATIONS:
• Hot-swapping, hot-docking (low resistance for PCI and
Compact PCI applications)
• Voltage translation (5V to 3.3V)
• Power Conservation
• Capacitance reduction and isloation
• Applications requiring low RON resistance and active high
enabling
• Bus Isolation
• Clock Gating
FUNCTIONAL BLOCK DIAGRAM
A0
B0
A9
B9
BE
BE
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
NOVEMBER 1999
1
c
1999 Integrated Device Technology, Inc.
DSC-5541/1
IDTQS3R862
HIGH-SPEED CMOS 10-BIT LOW RESISTANCE BUS SWITCH
INDUSTRIAL TEMPERATURE RANGE
ABSOLUTE MAXIMUM RATINGS(1)
PIN CONFIGURATION
Symbol
Description
VTERM(2)
Max
Unit
VTERM(3)
Supply Voltage to Ground
–0.5 to +7
V
DC Switch Voltage VS
–0.5 to +7
V
BE
1
24
Vcc
A0
2
23
BE
VTERM(3)
DC Input Voltage VIN
–0.5 to +7
V
AC Input Voltage (pulse width ≤20ns)
–3
V
mA
A1
3
22
B0
VAC
IOUT
DC Output Current
120
A2
4
21
B1
PMAX
Maximum Power Dissipation
0.5
W
TSTG
Storage Temperature
–65 to +150
°C
A3
5
20
B2
A4
6
19
B3
A5
7
18
B4
A6
8
17
B5
A7
9
16
B6
A8
10
15
B7
A9
11
14
B8
GND
12
13
B9
NOTES:
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.
2. VCC terminals.
3. All terminals except VCC .
CAPACITANCE (TA = +25°C, f = 1MHz, VIN = 0V, VOUT = 0V)
Pins
SOIC/ QSOP
TOP VIEW
Typ.
Max. (1)
Unit
Control Inputs
3
4
pF
Quickswitch Channels (Switch OFF)
5
6
pF
NOTE:
1. This parameter is guaranteed but not production tested.
PIN DESCRIPTION
Pin Names
I/O
A0 - A 9
I/O
Bus A
Description
B0 - B 9
I/O
Bus B
BE
I
Active LOW Bus Enable
BE
I
Active HIGH Bus Enable
FUNCTION TABLE(1)
BE
BE
A0 - A9
Function
L
L
Z
Disconnect
L
H
Z
Disconnect
H
L
B0 - B9
Connect
H
H
Z
Disconnect
NOTE:
1. H = HIGH Voltage Level
L = LOW Voltage Level
Z = High-Impedance
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IDTQS3R862
HIGH-SPEED CMOS 10-BIT LOW RESISTANCE 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 = 5V ± 10%
Symbol
Parameter
VIH
Input HIGH Voltage
VIL
IIN
Test Conditions
Min.
Guaranteed Logic HIGH for Control Pins
2
Input LOW Voltage
Guaranteed Logic LOW for Control Pins
Input Leakage Current (Control Inputs)
0V ≤ VIN ≤ VCC
Typ.(1) Max.
Unit
—
—
V
—
—
0.8
V
—
0.01
±1
µA
IOZ
Off-State Current (Hi-Z)
0V ≤ VOUT ≤ VCC, Switches OFF
—
0.01
±1
µA
RON
Switch ON Resistance(2)
VCC = Min., VIN = 0V, ION = 30mA
—
2.5
5
Ω
VCC = Min., VIN = 2.4V, ION = 15mA
—
4
8.5
VP
Pass Voltage(3)
VIN = VCC = 5V, IOUT = -5µA
3.7
4
4.3
NOTES:
1. Typical values are at VCC = 5V and TA = 25°C.
2. Max value of RON is guaranteed but not production tested.
3. Pass voltage is guaranteed but not production tested.
TYPICAL ON RESISTANCE vs VIN AT VCC = 5V
16
14
R ON
(ohms)
12
10
8
6
4
2
0
0.0
0.5
1.0
1.5
VIN
(Volts)
3
2.0
2.5
3.0
3.5
V
IDTQS3R862
HIGH-SPEED CMOS 10-BIT LOW RESISTANCE BUS SWITCH
INDUSTRIAL TEMPERATURE RANGE
POWER SUPPLY CHARACTERISTICS
Symbol
Parameter
Test Conditions(1)
Typ.(2)
Max.
Unit
ICCQ
Quiescent Power Supply Current
VCC = Max., VIN = GND or VCC, f = 0
0.2
3
µA
∆ICC
Power Supply Current per Input HIGH(3)
VCC = Max., VIN = 3.4V, f = 0

2.5
mA
ICCD
Dynamic Power Supply Current per MHz(4)
VCC = Max., A and B Pins Open,

0.25
mA/MHz
BE or BE Input Toggling @ 50% Duty Cycle
NOTES:
1. For conditions shown as Min. or Max., use the appropriate values specified under DC Electrical Characteristics.
2. Typical values are at VCC = 5V and TA = 25°C.
3. Per TTL-driven input (VIN = 3.4V, control inputs only). A and B pins do not contribute to ∆Icc.
3. This current applies to the control inputs only and represents the current required to switch internal capacitance at the specified frequency. The A and B inputs generate no significant
AC or DC currents as they transition. This parameter is guaranteed but not production tested.
SWITCHING CHARACTERISTICS OVER OPERATING RANGE
TA = -40°C to +85°C, VCC = 5V ± 10%
CLOAD = 50pF, RLOAD = 500Ω unless otherwise noted.
Symbol
Min. (1)
Parameter
Typ.
Max.
Unit


0.12(3)
ns
tPLH
tPHL
Data Propagation Delay(2)
tPZL
tPZH
Switch Turn-On Delay
BE or BE to A or B
1.5

5.6
ns
tPLZ
tPHZ
Switch Turn-Off Delay(2)
BE or BE to A or B
1.5

4.5
ns
A to B, B to A
NOTES:
1. Minimums are guaranteed but not production tested.
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 0.12ns 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.
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IDTQS3R862
HIGH-SPEED CMOS 10-BIT LOW RESISTANCE BUS SWITCH
INDUSTRIAL TEMPERATURE RANGE
ORDERING INFORMATION
IDTQS XXXXX
Device Type
XX
Package
X
Process
Blank
Industrial (-40°C to +85°C)
SO
Q
Small Outline IC
Quarter Size Outline Package
3R862
High Speed CMOS 10-Bit Low Resistance Bus Switch
with Active High and Low Enables
CORPORATE HEADQUARTERS
2975 Stender Way
Santa Clara, CA 95054
for SALES:
800-345-7015 or 408-727-6116
fax: 408-492-8674
www.idt.com
5
for Tech Support:
[email protected]
(408) 654-6459
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