PI3C3245LE

1
PS8162D 05/09/06
PI3C3245
2.5V/3.3V, High Bandwidth, Hot Insertion
8-Bit, 2-Port, Bus Switch
V
CC
NC 1 20
BEA0 2 19
B0A1 3 18
B1A2 4 17
B2A3 5 16
B3A4 6 15
B4A5 7 14
B5A6 8 13
B6A7 9 12
B7GND 10 11
Description
Pericom Semiconductor’s PI3C3245 is a 2.5 volt or 3.3 volt 8-bit,
2-port bus switch designed with a low On-Resistance (5-ohm)
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. It is very useful in switching signals that have high
bandwidth (>400 MHz).
Function BE A0–7
Disconnect H Hi-Z
Connect L B0–7
Truth Table
(1)
Note:
1. H = High Voltage Level
L = Low Voltage Level
Hi-Z = High Impedance
Block Diagram
Pin Description
Pin Name Description
BE Bus Enable Input (Active LOW)
A0–7 Bus A
B0–7 Bus B
GND Ground
V
CC
Power
Pin Configuration
Features
Near-Zero propagation delay
5-ohm switches connect inputs to outputs
High Bandwidth Operation (>400 MHz)
Permits Hot Insertion
5V I/O Tolerant
Rail-to-Rail 3.3V or 2.5V Switching
2.5V Supply Voltage Operation
Packaging (Pb-free & Green available):
– 20-pin 150 mil wide plastic QSOP (Q)
– 20-pin 173 mil wide plastic TSSOP (L)
BE
A7
A0
B7
B0
06-0244
2
PS8162D 05/09/06
PI3C3245
2.5V/3.3V, High Bandwidth,
Hot Insertion, 8-Bit, 2-Port, Bus Switch
Storage Temperature ........................................................ –65°C to +150°C
Ambient Temperature with Power Applied ......................... –40°C to +85°C
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 +5.5V
DC Output Current ............................................................................ 120mA
Power Dissipation ................................................................................ 0.5W
Note:
Stresses greater than those listed under MAXIMUM
RATINGS may cause permanent damage to the de-
vice. This is a stress rating only and functional opera-
tion 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.
Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.)
DC Electrical Characteristics (Over Operating Range, T
A
= –40°C to +85°C, V
CC
= 3.3V ±10%)
Parameters Description Test Conditions
(1)
Min. Typ.
(2)
Max. Units
V
IH
Input HIGH Voltage Guaranteed Logic HIGH Level 2.0
V
IL
Input LOW Voltage Guaranteed Logic LOW Level –0.5 0.8
I
IH
Input HIGH Current V
CC
= Max., V
IN
= V
CC
±1
I
IL
Input LOW Current V
CC
= Max., V
IN
= GND ±1 μA
I
OZH
(3)
High Impedance Output Current 0 A, B V
CC
±1
V
IK
Clamp Diode Voltage V
CC
= Min., I
IN
=18mA –0.73 –1.2 V
R
ON
Switch On Resistance
(4)
V
CC
= Min., V
IN
= 0.0V, I
ON
= 48mA 5 7 Ω
V
CC
= Min., V
IN
= 2.4V, I
ON
= 15mA 8 15
Parameters
(1)
Description Test Conditions Typ. Units
C
IN
Input Capacitance V
IN
= 0V 3.5
C
OFF
A/B Capacitance, Switch Off V
IN
= 0V 5.0 pF
C
ON
A/B Capacitance, Switch On V
IN
= 0V 10.0
Notes:
1. This parameter is determined by device characterization but is not production tested.
V
Capacitance (T
A
= 25°C, f = 1 MHz)
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
= 25°C ambient and maximum loading.
3. Not more than one output should be shorted at one time. Duration of the test should not exceed one second.
4. 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.
06-0244
PI3C3245
2.5V/3.3V, High Bandwidth,
Hot Insertion, 8-Bit, 2-Port, Bus Switch
3
PS8162D 05/09/06
PI3C3245
Com.
Parameters Description Conditions Min. Max. Units
t
PLH
Propagation Delay
(1,2)
C
L
= 50pF 0.25
t
PHL
Ax to Bx R
L
= 500-ohm
t
PZH
Bus Enable Time 1.5 6.5 ns
t
PZL
BE to Ax or Bx C
L
= 50pF
t
PHZ
Bus Disable Time R
L
= 500-ohm 1.5 5.5
t
PLZ
BE to Ax or Bx R = 500-ohm
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
260 500
Supply Current
ΔI
CC
Supply Current per V
CC
= Max. V
IN
= 3.0V
(3)
750
Input 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, +25°C ambient.
3. Per driven input (control input only); A and B pins do not contribute to ΔI
CC
.
Switching Characteristics over 3.3V Operating Range
μA
PI3C3245
Com.
Parameters Description Conditions Min. Max. Units
t
PLH
Propagation Delay
(1,2)
C
L
= 50pF 0.25
t
PHL
Ax to Bx R
L
= 500-ohm
t
PZH
Bus Enable Time 1.5 9.8 ns
t
PZL
BE to Ax or Bx C
L
= 50pF
t
PHZ
Bus Disable Time R
L
= 500-ohm 1.5 8.3
t
PLZ
BE to Ax or Bx R = 500-ohm
Switching Characteristics over 2.5V Operating Range
Notes:
1. This parameter is guaranteed but not tested on Propagation Delays.
2. 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.
Notes:
1. This parameter is guaranteed but not tested on Propagation Delays.
2. 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.
06-0244

PI3C3245LE

Mfr. #:
Manufacturer:
Diodes Incorporated
Description:
Digital Bus Switch ICs 3.3V 8Bit Bus Switch
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

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