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IDTQS3861
HIGH-SPEED CMOS 10-BIT BUS SWITCH WITH FLOW-THROUGH PINOUT INDUSTRIAL TEMPERATURE RANGE
JANUARY 2013
2013 Integrated Device Technology, Inc. DSC-5767/6c
INDUSTRIAL TEMPERATURE RANGE
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
IDTQS3861
FUNCTIONAL BLOCK DIAGRAM
FEATURES:
• Enhanced N channel FET with no inherent diode to Vcc
•5
ΩΩ
ΩΩ
Ω bidirectional switches connect inputs to outputs
• Zero propagation delay, zero ground bounce
• Undershoot clamp diodes on all switch and control inputs
• Available in QSOP and TSSOP packages
APPLICATIONS:
• Hot-swapping, hot-docking
• Voltage translation (5V to 3.3V)
• Power Conservation
• Capacitance reduction and isloation
• Bus Isolation
• Clock Gating
QUICKSWITCH® PRODUCTS
HIGH-SPEED CMOS 10-BIT
BUS SWITCH WITH
FLOW-THROUGH PINOUT
DESCRIPTION:
The QS3861 provides a set of ten high-speed CMOS TTL-compatible
bus switches. The low ON resistance (5Ω) of the QS3861 allows inputs to
be connected without adding propagation delay and without generating
additional ground bounce noise. The Bus Enable (BE) signal turns the
switches on.
The QS3861 is characterized for operation at -40°C to +85°C.
A0
BE
B0
A9B9
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INDUSTRIAL TEMPERATURE RANGE
IDTQS3861
HIGH-SPEED CMOS 10-BIT BUS SWITCH WITH FLOW-THROUGH PINOUT
PIN CONFIGURATION
Symbol Description Max Unit
VTERM(2) Supply Voltage to Ground –0.5 to +7 V
VTERM(3) DC Switch Voltage VS–0.5 to +7 V
VTERM(3) DC Input Voltage VIN –0.5 to +7 V
VAC AC Input Voltage (pulse width ≤20ns) –3 V
IOUT DC Output Current 120 mA
PMAX Maximum Power Dissipation 0.5 W
TSTG Storage Temperature –65 to +150 °C
ABSOLUTE MAXIMUM RATINGS(1)
NOTE:
1. H = HIGH Voltage Level
L = LOW Voltage Level
Z = High-Impedance
BE A0 - A9Function
H Z Disconnect
LB0 - B9Connect
FUNCTION TABLE(1)
Pins Typ. Max. (1) Unit
Control Inputs 3 5 pF
Quickswitch Channels (Switch OFF) 5 7 pF
CAPACITANCE (TA = +25°C, f = 1MHz, VIN = 0V, VOUT = 0V)
NOTE:
1. This parameter is guaranteed but not production tested.
Pin Names Description
A0 - A9Bus A
B0 - B9Bus B
BE Bus Switch Enable
PIN DESCRIPTION
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 .
QSOP/ TSSOP
TOP VIEW
GND B
9
A
9
A
8
A
6
1
2
3
4
5
6
7
8
9
10
12 13
14
15
16
17
18
19
20
21
22
23
24
11
Vcc
B
8
B
7
A
7
B
6
B
5
A
5
B
0
A
0
A
1
B
1
B
2
A
2
A
3
B
3
B
4
A
4
BE
NC
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IDTQS3861
HIGH-SPEED CMOS 10-BIT BUS SWITCH WITH FLOW-THROUGH PINOUT INDUSTRIAL TEMPERATURE RANGE
TYPICAL ON RESISTANCE vs VIN AT VCC = 5V
RON
(ohms)
VIN
(Volts)
Symbol Parameter Test Conditions Min. Typ.(1) Max. Unit
VIH Input HIGH Voltage Guaranteed Logic HIGH for Control Pins 2 — — V
VIL Input LOW Voltage Guaranteed Logic LOW for Control Pins — — 0.8 V
IIN Input Leakage Current (Control Inputs) 0V ≤ VIN ≤ VCC — ±0.01 ±1 μA
IOZ Off-State Current (Hi-Z) 0V ≤ VOUT ≤ VCC, Switches OFF — ±0.01 ±1 μA
RON Switch ON Resistance VCC = Min., VIN = 0V, ION = 30mA — 5 7 Ω
VCC = Min., VIN = 2.4V, ION = 15mA — 10 15
VPPass Voltage(2) VIN = VCC = 5V, IOUT = -5μA 3.7 4 4.2 V
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified:
Industrial: TA = –40°C to +85°C, VCC = 5V ± 5%
NOTES:
1. Typical values are at VCC = 5V and TA = 25°C.
2. Pass voltage is guaranteed but not production tested.
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5
0
2
4
6
8
10
12
14
16
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INDUSTRIAL TEMPERATURE RANGE
IDTQS3861
HIGH-SPEED CMOS 10-BIT BUS SWITCH WITH FLOW-THROUGH PINOUT
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 ΔIcc.
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.
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
ΔICC 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 Input Toggling @ 50% Duty Cycle
SWITCHING CHARACTERISTICS OVER OPERATING RANGE
TA = -40°C to +85°C, VCC = 5V ± 5%
CLOAD = 50pF, RLOAD = 500Ω unless otherwise noted.
Symbol Parameter Min. (1) Typ. Max. Unit
tPLH Data Propagation Delay(2) ⎯⎯0.25(3) ns
tPHL A to B, B to A
tPZL Switch Turn-On Delay 1.5 ⎯6.5 ns
tPZH BE to A or B
tPLZ Switch Turn-Off Delay(2) 1.5 ⎯5.5 ns
tPHZ BE to A or B
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 0.25ns 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.
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IDTQS3861
HIGH-SPEED CMOS 10-BIT BUS SWITCH WITH FLOW-THROUGH PINOUT INDUSTRIAL TEMPERATURE RANGE
ORDERING INFORMATION
QS XXXXX XX
Package
Device Type
Quarter Size Outline Package - QSOP Green
Thin Shrink Small Outline Package - TSSOP Green
QG
PAG
3861 High Speed CMOS 10-Bit Bus Switch
with Flow-Through Pinout
X
Blank
8
Tube or Tray
Tape and Reel
CORPORATE HEADQUARTERS for SALES: for Tech Support:
6024 Silver Creek Valley Road 800-345-7015 or 408-284-8200 logichelp@idt.com
San Jose, CA 95138 fax: 408-284-2775
www.idt.com
Datasheet Document History
01/25/13 Pg. 1, 5 Updated the Ordering Information by removing non green package version, the “IDT” notation and
Adding Tape and Reel information.
