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IDTQS3L384
HIGH-SPEED LOW POWER 10-BIT BUS EXCHANGE SWITCH INDUSTRIAL TEMPERATURE RANGE
OCTOBER 2008
2006 Integrated Device Technology, Inc. DSC-5772/5c
INDUSTRIAL TEMPERATURE RANGE
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 added ground bounce
• Ultra low power with 0.2μμ
μμ
μA typical Icc
• Undershoot clamp diodes on all switch and control inputs
• Two enables control five bits each
• Available in QSOP and TSSOP packages
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
APPLICATIONS:
• Hot-swapping, hot-docking
• Voltage translation (5V to 3.3V)
• Power Conservation
• Capacitance reduction and isloation
• Bus Isolation
• Clock Gating
IDTQS3L384
FUNCTIONAL BLOCK DIAGRAM
QUICKSWITCH® PRODUCTS
HIGH-SPEED LOW POWER CMOS
10-BIT BUS EXCHANGE SWITCH
DESCRIPTION:
The QS3L384 provides a set of ten high-speed CMOS TTL-compatible
bus switches. The low ON resistance of the QS3L384 allows inputs to be
connected to outputs without adding propagation delay and without gener-
ating additional ground bounce noise. The Bus Enable (BE) signals turn the
switches on. Two bus enable signals are provided, one for each of the upper
and lower five bits of the two 10-bit buses.
The QS3L384 is characterized for operation at -40°C to +85°C.
B4
BEB
BEA
B0
A4
A0
B5
B5
A9
A5
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INDUSTRIAL TEMPERATURE RANGE
IDTQS3L384
HIGH-SPEED LOW POWER 10-BIT BUS EXCHANGE SWITCH
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 (TA = 85°C) 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
BEA BEB B0 - A4B5 - B9Function
H H Hi-Z Hi-Z Disconnect
LH A0 - A4Hi-Z Connect
H L Hi-Z A5 - A9Connect
LLA0 - A4A5 - A9Connect
FUNCTION TABLE(1)
Pins Typ. Max. (1) Unit
Control Inputs 3 5 pF
Quickswitch Channels (Switch OFF) 5 7 p F
CAPACITANCE (TA = +25°C, f = 1MH z, V IN = 0V, VOUT = 0V)
NOTE:
1. This parameter is guaranteed but not production tested.
Pin Names I / O Description
A0 - A9I /O Bus A
B0 - B9I /O Bus B
BEA, BEB I 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
124BEA VCC
223B0B9
322A0A9
421
A1A8
520
B1B8
619
B2B7
817
A3A6
916B3B6
10 15B4B5
718
A2A7
11 14A4A5
12 13
GND BEB
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IDTQS3L384
HIGH-SPEED LOW POWER 10-BIT BUS EXCHANGE SWITCH INDUSTRIAL TEMPERATURE RANGE
TYPICAL ON RESIST ANCE 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 ——±1µA
IOZ Off-State Current (Hi-Z) 0V ≤ VOUT ≤ VCC — ±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.
16
14
12
10
8
6
4
2
0
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5
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INDUSTRIAL TEMPERATURE RANGE
IDTQS3L384
HIGH-SPEED LOW POWER 10-BIT BUS EXCHANGE SWITCH
NOTES:
1. For conditions shown as Min. or Max., use the appropriate values specified under DC Electrical Characteristics.
2. 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. 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 (2) VCC = Max., VIN = 3.4V, f = 0 ⎯1.5 mA
ICCD Dynamic Power Supply Current per MHz(3) VCC = Max., A and B Pins Open, ⎯0.25 mA/MHz
Control Inputs 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 Ax to Bx, Bx to Ax
tPZL Switch Turn-On Delay 1.5 ⎯6.5 ns
tPZH BEA, BEB to Ax, Bx
tPLZ Switch Turn-Off Delay(2) 1.5 ⎯5.5 ns
tPHZ BEA, BEB to Ax, Bx
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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IDTQS3L384
HIGH-SPEED LOW POWER 10-BIT BUS EXCHANGE SWITCH INDUSTRIAL TEMPERATURE RANGE
ORDERING INFORMATION
QS XXXXX XX
Package
Device Type
Quarter Size Outline Package
QSOP - Green
Thin Shrink Small Outline Package
TSSOP - Green
Q
QG
PA
PAG
3L384 High Speed Low Power CMOS 10-Bit Bus Switch
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
