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IDTQS3383
HIGH-SPEED CMOS 10-BIT BUS EXCHANGE SWITCH INDUSTRIAL TEMPERATURE RANGE
NOVEMBER 1999
1999 Integrated Device Technology, Inc. DSC-5571/-c
IDTQS3383
INDUSTRIAL TEMPERATURE RANGE
QUICKSWITCH® PRODUCTS
HIGH-SPEED CMOS 10-BIT
BUS EXCHANGE SWITCH
DESCRIPTION:
The QS3383 provides ten high-speed CMOS TTL-compatible bus
switches. The low ON resistance of the QS3383 allows inputs to be
connected to outputs without adding propagation delay and without gener-
ating additional ground bounce noise. The Bus Enable (BE) signal turns
the switches on. The Bus Exchange (BX) signal provides nibble swap of
the AB and CD pairs of signals. This exchange configuration allows byte
swapping of buses in systems. It can also be used as a 5-wide 2-to-1
multiplexer and to create low delay barrel shifters, etc.
The QS3383 is characterized for operation at -40°C to +85°C.
A4 C4
D4
B4
BX
BE
A0 C0
D0
B0
FUNCTIONAL BLOCK DIAGRAM
FEATURES:
− Enhanced N channel FET with no inherent diode to Vcc
− 5Ω bidirectional switches connect inputs to outputs
− Zero propagation delay, zero ground bounce
− Undershoot clamp diodes on all switch and control pins
− Bus exchange allows nibble swap
− Available in SOIC and QSOP Packages
APPLICATIONS
− Hot-swapping, hot-docking
− Voltage translation (5V to 3.3V)
− Resource sharing
− Crossbar switching
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INDUSTRIAL TEMPERATURE RANGE
IDTQS3383
HIGH-SPEED CMOS 10-BIT BUS EXCHANGE SWITCH
PIN CONFIGURATION
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
BE
C0
A0
B0
D0
C1
A1
B1
D1
C2
A2
GND
VCC
D4
B4
A4
C4
D3
B3
A3
C3
D2
B2
BX
SO24-2
SO24-8
SOIC/ QSOP
TOP VIEW
ABSOLUTE MAXIMUM RATINGS (1)
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
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 c onditions above t hose indic ated in t he operational sections
of this specification is not implied. Exposure to absolute maximum
rating condit i ons for extended periods may affect reliability .
2. Vc c Terminals.
3. All terminals except Vcc .
CAPACITANCE
(TA = +25OC, f = 1.0MHz, VIN = 0V, VOUT = 0V)
Pins Typ. Max. (1) Unit
Control Inputs 3 5 pF
Quickswitch Channels (Switch OFF) 5 7 pF
NOTE:
1. This paramet er i s guaranteed but not production tested.
PIN DESCRIPTION
Pin Names I/O Description
A0-A4, B0-B4I/O Buses A, B
C0-C4, D0-D4I/O Buses C, D
BE I Bus Switch Enable
BX I Bus Exchange
FUNCTION TABLE(1)
BE BX A0 - A4B0 - B4Function
H X Hi-Z Hi-Z Disconnect
LLC
0
- C4D0 - D4Connect
LHD
0
- D4C0 - C4Exchange
NOTE:
1. H
=
HIGH Volt age Level
L
=
LOW Volta
g
e Level
X
=
Don’t care
Z
=
Hi
g
h-Impedence
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IDTQS3383
HIGH-SPEED CMOS 10-BIT BUS EXCHANGE SWITCH INDUSTRIAL TEMPERATURE RANGE
RON
(ohms)
VIN
(Volts)
TYPICAL ON RESISTANCE vs VIN AT VCC = 5V
16
14
12
10
8
6
4
2
00.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified:
Industrial: TA = -40°C to +85°C, VCC = 5.0V ± 5%
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 —6 8Ω
R
ON Switch ON Resistance Vcc = Min., VIN = 2.4V, ION = 15mA —1217Ω
V
PPass Voltage (2) VIN = VCC = 5V, IOUT = -5µA3.7 4 4.2 V
NOTES:
1. Typical values are at VCC = 5.0V , TA = 25°C.
2. Pas s voltage is guaranteed but not producti on tested.
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INDUSTRIAL TEMPERATURE RANGE
IDTQS3383
HIGH-SPEED CMOS 10-BIT BUS EXCHANGE SWITCH
POWER SUPPLY CHARACTERISTICS
Symbol Parameter Test Conditions(1) Max. Unit
ICCQ Quiescent Power Supply Current VCC = Max., VIN = GND or Vcc, f = 0 1.5 mA
∆ICC Power Supply Current per Control Input HIGH (2) VCC = Max., VIN = 3.4V, f = 0 2.5 mA
ICCD Dynamic Power Supply Current per MHz(3) VCC = Max., A and B pins open
Control Input Toggling at 50% Duty Cycle 0.25 mA/MHz
NOTES:
1. For conditi ons shown as Min. or M ax., use the appropri ate values specified under DC Electrical Characteristic s.
2. Per TLL driven i nput (VIN = 3.4V, control inputs only). A, B, C, and D pins do not c ontribute to ∆Icc.
3. This current applies to the control inputs only and repres ents the current required to switch i nternal capacitanc e at the speci fied frequency. The A
and B inputs generate no significant AC or DC currents as they transition. This parameter is guarant eed but not production t ested.
SWITCHING CHARACTERISTICS OVER OPERATING RANGE
TA = -40°C to +85°C, VCC = 5.0V ± 5%
CLOAD = 50pF, RLOAD = 500Ω unless otherwise noted.
Symbol
Parameter Min. (1) Typ. Max. Unit
tPLH
tPHL Data Propagation Delay (2,3)
AxBx to CxDx, CxDx to AxBx — — 0.25 ns
tPZL
tPZH Switch Turn-on Delay
BE to Ax, Bx, Cx, Dx 1.5 — 6.5 ns
tPLZ
tPHZ Switch Turn-off Delay (2)
BE to Ax, Bx, Cx, Dx 1.5 — 5.5 ns
tBX Switch Multiplex Delay
BX to Ax, Bx, Cx, Dx 1.5 — 6.5 ns
NOTES:
1. Mini m um s are guaranteed but not produc t i on tested.
2. This param et er i s guaranteed but not produc t i on tested.
3. The time constant for the switc h al one i s of the order of 0.25ns for CL = 50pF. The bus switch contribut es no propagation delay ot her than the RC
delay of t he ON resistance of the switc h and the load capacit ance. Since t hi s time cons tant is muc h smaller than the ri se and fall times of typical
driving s i gnal s, it adds v ery little propagation delay to t he system. Propagation delay of the bus swit ch, when used in a system, is determined by the
driving c i rcuit on the driv i ng s i de of the switc h and i ts interaction with the load on t he dri ven side.
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IDTQS3383
HIGH-SPEED CMOS 10-BIT BUS EXCHANGE SWITCH INDUSTRIAL TEMPERATURE RANGE
ORDERING INFORMATION
IDTQS XXXXX XX
Package
De vice Type
Blank Ind u s tr ia l (- 4 0 ° C to +8 5 ° C)
S ma ll Ou tline I C (SO2 4 - 2 )
Q ua r te r Siz e Ou tline Pac k age (SO2 4 - 8 )
SO
Q
3383 High Speed C MO S 1 0-B it Bus Exchange Sw itch
X
Process
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