PERICOM PI3B3863

PI3B3863
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3.3V, 10-Bit, 2-Port BusSwitch
with SSTL-2 Enable
Product Features
Product Description
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Pericom’s Semiconductor’s PI3B series of logic circuits are
produced using the Company’s advanced sub micron CMOS
technology, achieving industry leading performance.
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)
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
Logic Block Diagram
24-Pin
Q, L
Truth Table(1)
Function
Disconnect
Connect
Note:
Product Pin Description
BE
H
L
A0–9
Hi-Z
B0–9
Pin Name
BE
A0–9
B0–9
GND
VCC
VREF
1. H = High Voltage Level
L = Low Voltage Level
Hi-Z = High Impedance
1
Description
Bus Enable Input (Active LOW)
Bus A
Bus B
Ground
Power
Input Reference
PS8167D
01/05/00
PI3B3863
3.3V, 10-Bit, 2-Port BusSwitch
with SSTL-2 Enable
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Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.)
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
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.
DC Electrical Characteristics (Over the Operating Range, TA = 0°C to +70°C, VCC = 3.3V ± 5%)
Parameters Description
Test Conditions(1)
Min.
Typ.(2)
VIH
Input HIGH Voltage (BE)
Guaranteed Logic HIGH Level
VREF+0.18
VIL
Input LOW Voltage (BE)
Guaranteed Logic LOW Level
-0.3
VREF
Input Reference Voltage
IIH
Input HIGH Current
IIL
Input LOW Current
IOZH
Max.
Units
3
V
VREF - 0.18 V
1.15
1.25
1.35
V
VCC = Max., VIN = VCC
±1
µA
VCC = Max., VIN = GND
±100
µA
High Impedance Output Current 0 ≤ A, B ≤VCC
±250
µA
VIK
Clamp Diode Voltage
VCC = Min., IIN = –18mA
–1.2
V
RON
Switch On Resistance(3)
VCC = Min., VIN = 0.8V, ION = 20mA
& VIN = 1.6V, ION = 15mA
36
Ω
17
25
Capacitance (TA = 25°C, f = 1 MHz)
Parameters(4)
Description
Test Conditions
Typ.
Units
CIN
COFF
Input Capacitance
A Capacitance, Switch Off
VIN = 0V
VIN = 0V
4.5
3.5
pF
pF
CON (A/B)
A/B Capacitance, Switch On
VIN = 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 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.
2
PS8167D
01/05/00
PI3B3863
3.3V, 10-Bit, 2-Port BusSwitch
with SSTL-2 Enable
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Power Supply Characteristics
Test Conditions(1)
Parameters Description
Min.
Typ.(2)
Max.
Units
ICC
Quiescent Power
Supply Current
VCC = Max.
VIN = GND or VCC
1.8
2.5
mA
∆ICC
Supply Current per
Input @ TTL HIGH
VCC = Max.
VIN = 3.0V(3)
1.9
2.5
mA
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
PI3B3863
Parame te rs
De s cription
Conditions (2,3)
M in.
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
Propagation Delay(2,3)
Ax to Bx, Bx to Ax
Bus Enable Time
BE to Ax or Bx
Bus Disable Time
BE to Ax or Bx
Units
Com.
CL = 50pF, RL = 500Ω
M ax.
1
CL = 20pF, RL = 500Ω,
R = 500Ω,
1
3
CL = 50pF, RL = 500Ω,
R = 500Ω,
1
3.5
CL = 20pF, RL = 500Ω,
R = 500Ω,
1
3.2
CL = 50pF, RL = 500Ω,
R = 500Ω,
1
3.8
ns
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
Part
Pin-Package
Te mpe rature
PI3B3863Q
24 - QSOP(Q )
–40°C to +85°C
PI3B3863L
24 - TSSOP(L)
–40°C to +85°C
Pericom Semiconductor Corporation
2380 Bering Drive • San Jose, CA 95131 • 1-800-435-2336 • Fax (408) 435-1100 • http://www.pericom.com
3
PS8167D
01/05/00