IDT IDTQS32861Q Quickswitch products high-speed cmos 10-bit bus switch with flow-through pinout Datasheet

IDTQS32861
HIGH-SPEED CMOS 10-BIT BUS SWITCH WITH FLOW-THROUGH PINOUT
INDUSTRIAL TEMPERATURE RANGE
QUICKSWITCH® PRODUCTS
HIGH-SPEED CMOS
10-BIT BUS SWITCH WITH
FLOW-THROUGH PINOUT
IDTQS32861
FEATURES:
DESCRIPTION:
•
•
•
•
The QS32861 provides a set of ten high speed CMOS, TTL-compatible
bus switches. The Bus Enable (BE) signal turns the switches on. The
QS32861 includes internal 25Ω series termination resistors 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 QS32861 is characterized for operation at -40°C to +85°C.
Enhanced N channel FET with no inherent diode to Vcc
Near zero ground bounce
Undershoot clamp diodes on all switch and control inputs
Available in QSOP and SOIC packages
APPLICATIONS:
•
•
•
•
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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
A9
B9
BE
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
MARCH 2002
1
c
2002 Integrated Device Technology, Inc.
DSC-5757/2
IDTQS32861
HIGH-SPEED CMOS 10-BIT BUS SWITCH WITH FLOW-THROUGH PINOUT
INDUSTRIAL TEMPERATURE RANGE
ABSOLUTE MAXIMUM RATINGS(1)
PIN CONFIGURATION
NC
A0
1
24
2
23
A1
3
22
Symbol
Description
Max
Unit
VTERM(2)
Supply Voltage to Ground
–0.5 to +7
V
VCC
VTERM(3)
DC Switch Voltage Vs
–0.5 to +7
V
BE
B0
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)
TSTG
Storage Temperature
A2
4
21
B1
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
0.5
W
–65 to +150
°C
NOTE:
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 = 1.0MHZ, VIN = 0V, VOUT = 0V)
QSOP/ SOIC
TOP VIEW
Pins
Typ.
Max. (1)
Unit
Control Pins
3
5
pF
Quickswitch Channels (Switch OFF)
5
7
pF
NOTE:
1. This parameter is measured at characterization but not tested.
PIN DESCRIPTION
Pin Names
BE
Description
Bus Enable
A0 - A9
Bus A
B0 - B9
Bus B
FUNCTION TABLE(1)
BE
A0 - A9
2A, 2Y I/Os
H
Hi-Z
Disconnect
L
B 0 - B9
Connect
NOTE:
1. H = HIGH Voltage Level
L = LOW Voltage Level
Z = High-Impedance
2
IDTQS32861
HIGH-SPEED CMOS 10-BIT BUS SWITCH WITH FLOW-THROUGH PINOUT
INDUSTRIAL TEMPERATURE RANGE
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
VIH
Input HIGH Level
Guaranteed Logic HIGH for Control Pins
VIL
Input LOW Level
Guaranteed Logic LOW for Control Pins
IIN
Input LeakageCurrent (Control Inputs)(2) 0V ≤ VIN ≤ VCC
IOZ
Off-State Output Current (Hi-Z)
Switch ON Resistance
RON(3)
VP
Pass Voltage(2)
Min.
Typ.(1)
Max.
Unit
2
—
—
V
—
—
0.8
V
—
±0.01
±1
µA
0V ≤ VOUT ≤ VCC, Switches OFF
—
±0.01
±1
µA
VCC = Min., VIN = 0V, ION = 30mA
VCC = Min., VIN = 2.4V, ION =15mA
VIN = VCC = 5V, IOUT = -5µA
15
18
3.7
20
25
4
35
40
4.2
Ω
NOTES:
1. Typical values are at VCC = 5.0V, TA = 25°C.
2. Pass Voltage is guaranteed but not production tested.
3. ROUT changed on March 8, 2002. See rear page for more information.
TYPICAL ON RESISTANCE vs VIN AT VCC = 5V
80
R ON
(ohms)
70
60
50
40
30
20
10
0
0.0
0.5
1.0
1.5
2.0
V IN
(Volts)
3
2.5
3.0
3.5
V
IDTQS32861
HIGH-SPEED CMOS 10-BIT BUS SWITCH WITH FLOW-THROUGH PINOUT
INDUSTRIAL TEMPERATURE RANGE
POWER SUPPLY CHARACTERISTICS
Symbol
Test Conditions(1)
Parameter
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 Control Input HIGH
VCC = Max., VIN = 3.4V(3), 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 at 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 = 5.0V, 25°C ambient.
3. Per TLL driven input (VIN = 3.4V, control inputs only). A and B pins do not contribute to ∆Icc.
4. 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 pins 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 = 5.0V ± 5%;
CLOAD = 50pF, RLOAD = 500Ω unless otherwise noted.
Symbol
Parameter
tPLH
Data Propagation Delay (2,4)
tPHL
A to B or B to A
tPZH
Switch Turn-on Delay
tPZL
BE to A or B
tPHZ
Switch Turn-off Delay (2)
tPLZ
BE to A or B
Min. (1)
Typ.
Max.
Unit
—
—
1.25(3)
ns
1.5
—
7.5
ns
1.5
—
5.5
ns
NOTES:
1. Minimums are guaranteed but not production tested.
2. This parameter is guaranteed but not production tested.
3. The time constant for the switch alone is of the order of 1.25ns for CL = 50pF.
4. The bus switch contributes no propagation delay other than the RC delay of the ON resistance of the switch and the load capacitance. 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
IDTQS32861
HIGH-SPEED CMOS 10-BIT BUS SWITCH WITH FLOW-THROUGH PINOUT
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
32861
High Speed CMOS 10-Bit Bus Switch with
Flow-Through Pinout
As per PCN L0201-02, the Output Resistance (RON) specifications have changed as of March 8, 2002. The original specifications were:
Parameter
RON
Description
Min.
Typ.
Max.
Unit
Ω
VCC = Min, VIN = 0V, ION = 30mA
20
28
40
VCC = Min, VIN = 2.4V, ION = 15mA
20
35
48
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www.idt.com
5
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[email protected]
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