IDT IDTQS32384SO Quickswitch products high-speed cmos 10-bit bus switch Datasheet

IDTQS32384
HIGH-SPEED CMOS 10-BIT BUS SWITCH
INDUSTRIAL TEMPERATURE RANGE
QUICKSWITCH® PRODUCTS
HIGH-SPEED CMOS
10-BIT BUS SWITCH
FEATURES:
•
•
•
•
•
•
•
IDTQS32384
DESCRIPTION:
Enhanced N channel FET with no inherent diode to Vcc
Ω bidirectional switches connect inputs to outputs
5Ω
Zero ground bounce
Ω resistors for low noise
25Ω
Undershoot clamp diodes on all switch and control inputs
Two enables control five bits each
Available in QSOP and SOIC packages
The QS32384 provides a set of ten high-speed CMOS, TTL-compatible
bus switches. Two banks of five switches are controlled by independent Bus
Enable (BE) signals. The QS32384 adds an internal series resistor with
each switch to reduce reflection noise in high speed applications. When
closed, the switch acts as the source (series) termination for the driver
connected to it.
The QS32384 is characterized for operation at -40°C to +85°C.
APPLICATIONS:
•
•
•
•
•
•
Hot-swapping, hot-docking
Voltage translation (5V to 3.3V)
Power conservation
Capacitance reduction and isolation
Clock gating
Bus isolation
FUNCTIONAL BLOCK DIAGRAM
A0
B0
A4
B4
A5
B5
A9
B9
BEA
BEB
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
APRIL 2000
1
c
2000 Integrated Device Technology, Inc.
DSC-5751/1
IDTQS32384
HIGH-SPEED CMOS 10-BIT BUS SWITCH
INDUSTRIAL TEMPERATURE RANGE
ABSOLUTE MAXIMUM RATINGS(1)
PIN CONFIGURATION
BEA
B0
1
2
24
VCC
23
B9
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
VTERM(3)
DC Input Voltage VIN
–0.5 to +7
V
VAC
AC Input Voltage (pulse width ≤20ns)
–3
V
120
mA
A0
3
22
A9
IOUT
DC Output Current
A1
4
21
A8
PMAX
Maximum Power Dissipation (TA = 85°C)
TSTG
Storage Temperature
B1
5
20
B8
B2
6
19
B7
A2
7
18
A7
A3
8
17
A6
B3
9
16
B6
B4
10
15
B5
A4
11
14
A5
GND
12
13
BEB
0.5
W
–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 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
QSOP/ SOIC
TOP VIEW
Typ.
Max. (1)
Control Inputs
3
5
pF
Quickswitch Channels (Switch OFF)
5
7
pF
NOTE:
1. This parameter is guaranteed but not production tested.
PIN DESCRIPTION
Pin Names
I/O
A0 - A9
I/O
Bus A
Description
B0 - B9
I/O
Bus B
BEA, BEB
I
Bus Switch Enable
FUNCTION TABLE(1)
BEA
BEB
B0 - B4
B5 - B 9
Function
H
H
Z
Z
Disconnect
L
H
A0 - A4
Z
Connect
H
L
Z
A5 - A9
Connect
L
L
A0 - A4
A5 - A9
Connect
NOTE:
1. H = HIGH Voltage Level
L = LOW Voltage Level
Z = High-Impedance
2
Unit
IDTQS32384
HIGH-SPEED CMOS 10-BIT 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 ± 5%
Symbol
Parameter
VIH
Input HIGH Voltage
VIL
IIN
Test Conditions
Min.
Guaranteed Logic HIGH for Control Inputs
2
Input LOW Voltage
Guaranteed Logic LOW for Control Inputs
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
VCC = Min., VIN = 0V, ION = 30mA
20
28
40
Ω
VCC = Min., VIN = 2.4V, ION = 15mA
20
35
48
VP
Pass Voltage(2)
VIN = VCC = 5V, IOUT = -5µA
3.7
4
4.2
NOTES:
1. Typical values are at VCC = 5V and TA = 25°C.
2. Pass voltage is guaranteed but not production tested.
TYPICAL ON RESISTANCE vs VIN AT VCC = 5V
80
R ON
70
(ohms)
60
50
40
30
20
10
0
0.0
0.5
1.0
1.5
VIN
(Volts)
3
2.0
2.5
3.0
3.5
V
IDTQS32384
HIGH-SPEED CMOS 10-BIT BUS SWITCH
INDUSTRIAL TEMPERATURE RANGE
POWER SUPPLY CHARACTERISTICS
Symbol
Test Conditions(1)
Parameter
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 Inputs Toggling @ 50% Duty Cycle
0.25
mA/MHz
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, B, C, and D 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 ± 5%
CLOAD = 50pF, RLOAD = 500Ω unless otherwise noted.
Symbol
Min. (1)
Parameter
Typ.
Max.
Unit


1.25(3)
ns
tPLH
tPHL
Data Propagation Delay(2)
tPZL
tPZH
Switch Turn-On Delay
BEA, BEB to Ax, Bx
1.5

7.5
ns
tPLZ
Switch Turn-Off Delay(2)
1.5

5.5
ns
tPHZ
BEA, BEB to Ax, Bx
Ax to Bx, Bx to Ax
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 1.25ns 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.
4
IDTQS32384
HIGH-SPEED CMOS 10-BIT BUS SWITCH
INDUSTRIAL TEMPERATURE RANGE
ORDERING INFORMATION
IDTQS XXXXX
Device Type
XX
Package
X
Process
CORPORATE HEADQUARTERS
2975 Stender Way
Santa Clara, CA 95054
Blank
Industrial (-40°C to +85°C)
SO
Q
Small Outline IC
Quarter Size Outline Package
32384
High Speed CMOS 10-Bit Bus Switch
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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