PI5C3383
5-Bit, 4-Port Bus Exchange Switch
Features
Near-Zero propagation delay
5Ω switches connect inputs to outputs
Direct bus connection when switches are ON
Ultra-low quiescent power (0.2µA typical)
– Ideally suited for notebook applications
• Packaging (Pb-free & Green available):
– 24-pin 173-mil wide plastic TSSOP (L)
– 24-pin 150-mil wide plastic QSOP (Q)
– 24-pin 300-mil wide plastic SOIC (S)
•
•
•
•
Description
The PI5C3383 is a 5-bit, 4-port bus switch with exchange
designed with a low On-Resistance allowing inputs to be
connected directly to outputs. The switch creates no additional
propagational delay or additional ground bounce noise. The
switch is turned ON by the Bus Enable (BE) input signal, and the
Bus Exchange (BX) input signal offers nibble swapping of the
AB and CD pairs of signals. This exchange configuration allows
byte swapping of buses in systems. It can also be used as a quad
2-to-1 multiplexer and to create low delay barrel shifters, etc.
Block Diagram
A0
C0
Pin Configuration
BE
C
0
A
0
B
0
D
0
C
1
A
1
B
1
D
1
C
2
A
2
GND
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
B0
D0
A4
C4
Vcc
D
4
B
4
A
4
C
4
D
3
B
3
A
3
C
3
D
2
B
2
BX
B4
D4
BX
BE
Pin Description
Pin Name
BE
B
X
A
X
BE
H
L
L
BX
X
L
H
A0-A4
Hi-Z
C0-C4
D0-D4
B0-B4
Hi-Z
D0-D4
C0-C4
B
X
C
X
D
X
GND
V
CC
Description
Bus Enable Input (Active LOW)
Bus Exchange Input
Bus A
Bus B
Bus C
Bus D
Ground
Power
Truth Table
(1)
Function
Disconnect
Connect
Exchange
Note:
1. H =High Voltage Level, X = Don’t Care
L = Low Voltage Level, Hi-Z = High Impedance
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PS7028G
12/10/04
PI5C3383
5-Bit, 4-Port Bus Exchange Switch
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 & V
CC
Only)...–0.5V to +7.0V
Supply Voltage to Ground Potential (Outputs & D/O Only) –0.5V to +7.0V
DC Input Voltage ..................................................................–0.5V to +7.0V
DC Output Current............................................................................120 mA
Power Dissipation .................................................................................0.5W
Note:
Stresses greater than those listed under MAXIMUM RAT-
INGS 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. Ex-
posure to absolute maximum rating conditions for extended
periods may affect reliability.
DC Electrical Characteristics
(Over the Operating Range, T
A
= –40°C to +85°C, V
CC
= 5V ±5%)
Parameters
V
IH
V
IL
I
IH
I
IL
I
OZH
V
IK
V
I
OS
V
H
R
ON
Description
Input HIGH Voltage
Input LOW Voltage
Input HIGH Current
Input LOW Current
High Impedance Output Current
Clamp Diode Voltage
Short Circut Current
(3)
Input Hysteresis at Control Pins
Switch On-Resistance
(4)
V
CC
= Min.,
V
IN
= 0.0V, I
ON
= 48mA
V
CC
= Min.,
V
IN
= 2.4V, I
ON
= 15mA
Test Condidtions
(1)
Min.
2.0
-0.5
-
-
-
Guaranteed Logic HIGH Level
Guaranteed Logic LOW Level
V
CC
= Max., V
IN
= V
CC
V
CC
= Max., V
IN
= GND
0 ≤ A B, CD ≤ V
CC
V
CC
=Min., I
IN
= -18mA
AB (CD) = 0V, CD (AB) = V
CC
100
-
-
-
Typ.
(2)
-
-
-
-
-
-
-
150
5
10
Max
-
0.8
±1
±1
±1
-0.7
-
-
7
15
Units
V
µA
-1.2
mA
mV
Ω
Capacitance
(T
A
= 25°C, f = 1 MHz)
Parameters
(5)
C
IN
C
OFF
C
ON
Input Capacitance
AB/CD Capacitance, Switch OFF
AB/CD Capacitance, Switch ON
V
IN
= 0V
Description
Test Conditions
Typ.
6
8
14
pF
Units
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
= 5.0V,
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 AB and CD pin at indicated current through the switch. On-Resistance is determined by the lower of
the voltages on the two (A or B, C or D) pins.
5. This parameter is determined by device characterization but is not production tested.
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PS7028G
12/10/04
PI5C3383
5-Bit, 4-Port Bus Exchange Switch
Power Supply Characteristics
Parameters
I
CC
∆I
CC
Description
Quiescent Power
Supply Current
Supply Current per
Input @ TTL HIGH
Supply Current per
Input per MHz
(4)
V
CC
= Max.
V
CC
= Max.
V
CC
= Max.,
AB and CD pins Open
BE = GND
Control Input Toggling
50% Duty Cycle
Test Conditions
(1)
V
IN
= GND or V
CC
V
IN
= 3.4V
(3)
Min.
-
-
Typ.
0.1
-
Max.
3.0
2.5
Units
µA
mA
I
CCD
-
-
0.25
mA/
MHz
Notes:
1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device.
2. Typical values are at Vcc = 5.0V, +25°C ambient.
3. Per TTL driven input (V
IN
= 3.4V,
control inputs only); A, B, C, and D pins do not contribute to Icc.
4. This current applies to the control inputs only and represent the current required to switch internal capacitance at the specified frequency. The
A, B, C, and D inputs generate no significant AC or DC currents as they transition. This parameter is not tested, but is guaranteed by design.
Switching Characteristics over Operating Range
Parameters
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
t
BX
Description
Propagation Delay
(2, 3)
Ax to Cx, Bx to Dx
Bus Enable Time BE to Cx or Dx
Bus Disable Time BE to Cx or Dx
Bus Exchange Time BX to Cx or Dx
C
L
= 50pF
R
L
= 500Ω
Condidtions
(1)
Com
Min.
-
1.5
1.5
1.5
Typ.
0.25
-
-
-
Max
-
6.5
5.5
6.5
ns
Units
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 0.25\ns 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.
Applications
Logic Inputs
The logic control inputs can be driven up to +5.5V regardless of the supply voltage. For example, given a 5.0V supply, the control
or select pins may be driven low to 0V and high to 5.5V. Driving the control or select pins Rail-toRail minimizes power consump-
tion.
Power-Supply Sequencing
Proper power-supply sequencing is recommended for all CMOS devices. Always apply VCC before applying signals to the input/
output or control pins.
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PS7028G
12/10/04
PI5C3383
5-Bit, 4-Port Bus Exchange Switch
Packaging Mechanical: 24-Pin TSSOP (L)
24
.169
.177
4.3
4.5
.004
.008
0.09
0.20
1
.303
.311
7.7
7.9
0.45
.018
0.75
.030
.047
1.20
Max
SEATING
PLANE
.252
BSC
6.4
.0256
BSC
0.65
.007
.012
0.19
0.30
.002
0.05
.006
0.15
Packaging Mechanical: 24-Pin QSOP (Q)
24
.008
0.20
MIN.
.150
.157
3.81
3.99
.008
.013
0.20
0.33
Guage Plane
.010
0.254
1
Detail A
.016
.035
0.41
0.89
.041
1.04
REF
0˚-6˚
.337
.344
8.56
8.74
.015 x 45˚
0.38
.033
0.84
.053
.069
1.35
1.75
Detail A
SEATING
PLANE
.007
.010
.016
.050
0.406
1.27
0.178
0.254
.025
typical
0.635
.008
0.203
.012
0.305
.004
0.101
.010
0.254
.228
.244
5.79
6.20
X.XX
DENOTES DIMENSIONS
X.XX
IN MILLIMETERS
4
PS7028G
12/10/04
PI5C3383
5-Bit, 4-Port Bus Exchange Switch
Packaging Mechanical: 24-Pin SOIC (S)
24
.2914
.2992
7.40
7.60
.010
.029
1
.5985
15.20
.6141
15.60
0.254
x 45˚
0.737
0-8˚
.0091
.0125
0.23
0.32
.021
0.533
.031
0.787
0.41
.016
1.27
.050
.0926
2.35
.1043
2.65
SEATING
PLANE
.394
.419
10.00
10.65
.050
BSC
1.27
.013
.020
0.33
0.51
.0040
.0118
0.10
0.30
X.XX
DENOTES DIMENSIONS
X.XX
IN MILLIMETERS
Ordering Information
Ordering Code
PI5C3383L
PI5C3383LE
PI5C3383Q
PI5C3383QE
PI5C3383S
PI5C3383SE
Packaging Code
L
L
Q
Q
S
S
Package Type
24-pin 173-mil wide plastic TSSOP
Pb-free & Green, 24-pin 173-mil wide plastic TSSOP
24-pin 150-mil wide plastic QSOP
Pb-free & Green, 24-pin 150-mil wide plastic QSOP
24-pin 300-mil wide plastic SOIC
Pb-free & Green, 24-pin 300-mil wide plastic SOIC
Notes:
1. Thermal characteristics can be found on the company web site at www.pericom.com/packaging/
Pericom Semiconductor Corporation • 1-800-435-2336 • www.pericom.com
5
PS7028G
12/10/04
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