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PS8167D 01/05/00
Product Pin Configuration
Product Pin Description
Pin Name
Description
BE
Bus Enable Input (Active LOW)
A09
Bus A
B09
Bus B
GND
Ground
V
CC
Power
V
REF
Input Reference
Function
BE
A
09
Disconnect
H
Hi-Z
Connect
L
B
09
Truth Table
(1)
Note:
1. H = High Voltage Level
L = Low Voltage Level
Hi-Z = High Impedance
Logic Block Diagram
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PI3B3863
3.3V, 10-Bit, 2-Port BusSwitch
with SSTL-2 Enable
Product Description
Pericoms Semiconductors PI3B series of logic circuits are
produced using the Companys advanced sub micron CMOS
technology, achieving industry leading performance.
The PI3B3863 is a 10-bit, 3.3 volt two-port bus switch designed
with a low ON resistance allowing inputs to be connected
directly to outputs. The bus switch creates no additional
propagational delay or additional ground bounce noise. The
switches are turned ON by the Bus Enable (BE) input signal,
which is SSTL-2 compatible.
Product Features
Near zero propagation delay
20 Ohm switches connect inputs to outputs
Fast Switching Speed - 3.8ns (max.)
Packages available:
24-pin 150 mil wide plastic QSOP (Q)
24-pin 173 mil wide plastic TSSOP (L)
24-Pin
Q, L
2
PS8167D 01/05/00
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PI3B3863
3.3V, 10-Bit, 2-Port BusSwitch
with SSTL-2 Enable
DC Electrical Characteristics
(Over the Operating Range, T
A
= 0C to +70C, V
CC
= 3.3V 5%)
Parameters Description
Test Conditions
(1)
Min.
Typ.
(2)
Max.
Units
V
IH
Input HIGH Voltage (BE)
Guaranteed Logic HIGH Level
V
REF
+0.18
3
V
V
IL
Input LOW Voltage (BE)
Guaranteed Logic LOW Level
-0.3
V
REF
- 0.18
V
V
REF
Input Reference Voltage
1.15
1.25
1.35
V
I
IH
Input HIGH Current
V
CC
= Max., V
IN
= V
CC
1
A
I
IL
Input LOW Current
V
CC
= Max., V
IN
= GND
100
A
I
OZH
High Impedance Output Current 0
A, B
V
CC
250
A
V
IK
Clamp Diode Voltage
V
CC
= Min., I
IN
= 18mA
1.2
V
R
ON
Switch On Resistance
(3)
V
CC
= Min., V
IN
= 0.8V, I
ON
= 20mA
17
25
36
& V
IN
= 1.6V, I
ON
= 15mA
Storage Temperature ...............................................................65C to +150C
Ambient Temperature with Power Applied .............................. 40C to +85C
Supply Voltage to Ground Potential (Inputs & V
CC
Only) ........0.5V to +4.6V
Supply Voltage to Ground Potential (Outputs & D/O Only) ......0.5V to +4.6V
DC Input Voltage .......................................................................0.5V to +4.6V
DC Output Current .................................................................................120mA
Power Dissipation .................................................................................... 0.5W
Note:
Stresses greater than those listed under 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.
Capacitance
(T
A
= 25C, f = 1 MHz)
Parameters
(4)
Description
Test Conditions
Typ.
Units
C
IN
Input Capacitance
V
IN
= 0V
4.5
pF
C
OFF
A Capacitance, Switch Off
V
IN
= 0V
3.5
pF
C
ON
(A/B)
A/B Capacitance, Switch On
V
IN
= 0V
9.5
pF
Notes:
1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at V
CC
= 3.3V, T
A
= 25C ambient and maximum loading.
3. Measured by the voltage drop between A and B pin at indicated current through the switch. ON resistance is determined
by the lower of the voltages on the two (A,B) pins.
4. This parameter is determined by device characterization but is not production tested.
Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.)
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PS8167D 01/05/00
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PI3B3863
3.3V, 10-Bit, 2-Port BusSwitch
with SSTL-2 Enable
Power Supply Characteristics
Parameters Description
Test Conditions
(1)
Min.
Typ.
(2)
Max.
Units
I
CC
Quiescent Power
V
CC
= Max.
V
IN
= GND or V
CC
1.8
2.5
mA
Supply Current
I
CC
Supply Current per
V
CC
= Max.
V
IN
= 3.0V
(3)
1.9
2.5
mA
Input @ TTL HIGH
Notes:
1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device.
2. Typical values are at V
CC
= 3.3V, +25C ambient.
3. Per TTL driven input (control input only); A and B pins do not contribute to I
CC
.
Switching Characteristics over Operating Range
Notes:
1. See test circuit and waveforms.
2. This parameter is guaranteed but not tested on Propagation Delays.
3. The bus switch contributes no propagational 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 for 50pF load. Since this time constant is much smaller than the rise/fall times of typical
driving signals, it adds very little propagational delay to the system. Propagational 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.
Pericom Semiconductor Corporation
2380 Bering Drive San Jose, CA 95131 1-800-435-2336 Fax (408) 435-1100 http://www.pericom.com
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Ordering Information
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