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PI3B3863
3.3V, 10-Bit, 2-Port BusSwitch
with SSTL-2 Enable
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)
Logic Block Diagram
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 Pin Configuration
24-Pin
Q, L
Truth Table
Function BE A0–9
Disconnect H Hi-Z
Connect L B0–9
Note: 1. H = High Voltage Level
(1)
L = Low Voltage Level
Hi-Z = High Impedance
Product Pin Description
Pin Name Description
BE Bus Enable Input (Active LOW)
A09 Bus A
B09 Bus B
GND Ground
V
CC
V
REF
1
Power
Input Reference
PS8167D 01/05/00
Page 2
Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.)
PI3B3863
3.3V, 10-Bit, 2-Port BusSwitch
with SSTL-2 Enable
Storage Temperature ............................................................... 65°C to +150°C
Ambient Temperature with Power Applied .............................. 40°C to +85°C
Supply Voltage to Ground Potential (Inputs & VCC 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
DC Electrical Characteristics (Over the Operating Range, T
Parameters Description Test Conditions
V
V
V
I
IH
I
IL
I
OZH
V
R
IH
IL
REF
IK
ON
Input HIGH Voltage (BE) Guaranteed Logic HIGH Level V
Input LOW Voltage (BE) Guaranteed Logic LOW Level -0.3 V
Input Reference Voltage 1.15 1.25 1.35 V
Input HIGH Current VCC = Max., VIN = V
Input LOW Current VCC = Max., VIN = GND ±100 µ A
High Impedance Output Current 0 ≤ A, B ≤V
CC
Clamp Diode Voltage VCC = Min., IIN = –18mA –1.2 V
Switch On Resistance
(3)
VCC = Min., VIN = 0.8V, ION = 20mA 17 25 36 Ω
= 0°C to +70°C, VCC = 3.3V ± 5%)
A
(1)
CC
& VIN = 1.6V, ION = 15mA
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.
Min. Typ.
+0.18 3 V
REF
(2)
REF
Max. Units
- 0.18 V
±1 µA
±250 µA
Capacitance (T
Parameters
C
IN
C
OFF
C
(A/B) A/B Capacitance, Switch On VIN = 0V 9.5 pF
ON
= 25°C, f = 1 MHz)
A
(4)
Description Test Conditions Typ. Uni t s
Input Capacitance VIN = 0V 4.5 pF
A Capacitance, Switch Off VIN = 0V 3.5 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 VCC = 3.3V, TA = 25°C 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.
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PS8167D 01/05/00
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Power Supply Characteristics
Parameters Description Test Conditions
(1)
PI3B3863
3.3V, 10-Bit, 2-Port BusSwitch
with SSTL-2 Enable
Min. Typ.
(2)
Max. Units
I
CC
Quiescent Power VCC = Max. VIN = GND or V
CC
1.8 2.5 mA
Supply Current
∆I
CC
Supply Current per VCC = Max. VIN = 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 VCC = 3.3V, +25°C ambient.
3. Per TTL driven input (control input only); A and B pins do not contribute to ICC.
Switching Characteristics over Operating Range
3683B3IP
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t
HLP
t
LHP
t
HZP
t
LZP
)3,2(
yaleDnoitagaporP
C
L
xAotxB,xBotxA
C
L
C
R005= ,Ω
L
emiTelbanEsuB
xBroxAotEB
R005= ,Ω
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.moC
stinU
.niM.xaM
R,Fp05=
R,Fp02=
R,Fp05=
005= Ω
L
005= ,Ω
L
005= ,Ω
L
13
15.3
1
sn
C
L
t
ZHP
t
ZLP
emiTelbasiDsuB
xBroxAotEB
C
L
R,Fp02=
L
R005= ,Ω
R,Fp05=
L
R005= ,Ω
005= ,Ω
005= ,Ω
12.3
18.3
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.
Ordering Information
traPegakcaP-niPerutarepmeT
Q3683B3IP)Q(POSQ-42C°58+otC°04
L3683B3IP)L(POSST-42C°58+otC°04
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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PS8167D 01/05/00
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