Truth Table
(1)
Function
Disconnect
Connect
Exchange
Note:
1. H
X
L
Hi-Z
=
=
=
=
BE
H
L
L
BX
X
L
H
A
0-A4
Hi-Z
C
0-C4
D
0-D4
B
0-B4
Hi-Z
D
0-D4
C
0-C4
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21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI5C3383/PI5C32383
5-Bit, 4-Port Bus Exchange Switch
PI5C3383
PI5C32383 (25ohm)
Product Features
Near-zero propagation delay
Low noise, 25ohm version (PI5C32383)
5ohm switches connect inputs to outputs (PI5C3383)
Direct bus connection when switches are ON
Ultra-low quiescent power (0.2µA typical)
Ideally suited for notebook applications
Packages 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)
5-Bit, 4-Port Bus Exchange Switch
Product Description
Pericom Semiconductors PI5C series of logic circuits are produced
using the Companys advanced submicron CMOS technology,
achieving industry leading performance.
The PI5C3383 and PI5C32383 are 5-bit, 4-port bus switch with
exchange 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, 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. The
PI5C32383 is designed with an internal 25ohm resistor reducing
noise reflection in high-speed applications.
Logic Block Diagram
A
0
C
0
Product Pin Configuration
B
0
D
0
BE
C
0
A
0
B
0
D
0
C
1
A
1
B
1
D
1
C
2
A
2
GND
24
1
23
2
22
3
21
4
24-Pin
20
5
L, Q, S
19
6
18
7
17
8
16
9
15
10
14
11
13
12
A
4
C
4
B
4
D
4
Vcc
D
4
B
4
A
4
C
4
D
3
B
3
A
3
C
3
D
2
B
2
BX
Product Pin Description
BX
BE
Pin Name
BE
BX
Ax
Bx
Cx
Dx
GND
V
CC
Description
Bus Enable Input (Active LOW)
Bus Exchange Input
Bus A
Bus B
Bus C
Bus D
Ground
Power
High Voltage Level
Dont Care
Low Voltage Level
High Impedance
1
PS7028C
05/19/00
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PI5C3383/PI5C32383
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 & Vcc 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
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.
DC Electrical Characteristics
(Over the Operating Range, T
A
= 40°C to +85°C, V
CC
= 5V ±5%)
Parameters Description
V
IH
V
IL
I
IH
I
IL
I
OZH
V
IK
I
OS
V
H
R
ON
Input HIGH Voltage
Input LOW Voltage
Input HIGH Current
Input LOW Current
High Impedance Output Current
Clamp Diode Voltage
Short Circuit 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
PI5C3383
PI5C32383
PI5C3383
PI5C32383
Test Conditions
(1)
Guaranteed Logic HIGH Level
Guaranteed Logic LOW Level
V
CC
= Max., V
IN
= V
CC
V
CC
= Max., V
IN
= GND
0
≤
AB, CD
≤
V
CC
V
CC
= Min., I
IN
= 18mA
AB (CD) = 0V, CD (AB) = V
CC
Min.
2.0
0.5
100
15
15
Typ
(2)
0.7
150
5
20
10
25
Max.
0.8
±1
±1
±1
1.2
7
40
15
48
Units
V
V
µA
µA
µA
V
mA
m
V
ohm
ohm
Capacitance
(T
A
= 25°C, f = 1 MHz)
Parameters
(5)
C
IN
C
OFF
C
ON
Description
Input Capacitance
AB/CD Capacitance, Switch Off
AB/CD Capacitance, Switch On
Test Conditions
V
IN
= 0V
V
IN
= 0V
V
IN
= 0V
Typ
Max.
6
6
8
Units
pF
pF
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
= 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.
2
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05/19/00
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PI5C3383/PI5C32383
5-Bit, 4-Port Bus Exchange Switch
Power Supply Characteristics
Parameters Description
I
CC
∆I
CC
I
CCD
Quiescent Power
Supply Current
Supply Current per
Input @ TTL HIGH
Supply Current per
Input per MHz
(4)
Test Conditions
(1)
V
CC
= Max.
V
CC
= Max.
V
CC
= Max.,
AB and CD Pins Open
BE = GND
Control Input Toggling
50% Duty Cycle
V
IN
= GND or V
CC
V
IN
= 3.4V
(3)
Min.
Typ
(2)
0.1
Max.
3.0
2.5
0.25
Units
µA
mA
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.
PI5C3383 Switching Characteristics over Operating Range
PI5C3383
Com
Typ
0.25
Parameters Description
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
t
BX
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
Conditions
(1)
C
L
= 50 pF
R
L
= 500ohm
Min
1.5
1.5
1.5
Max
6.5
5.5
6.5
Unit
ns
ns
ns
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 0.25\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.
3
PS7028C
05/19/00
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PI5C3383/PI5C32383
5-Bit, 4-Port Bus Exchange Switch
PI5C32383 Switching Characteristics over Operating Range
Parameters Description
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
t
BX
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
Conditions
(1)
C
L
= 50pF
R
L
= 500ohm
Min
1.5
1.5
1.5
PI5C32383
Com
Typ
1.25
Max
6.5
5.5
6.5
Units
ns
ns
ns
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.
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
consumption.
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.
Ordering Information
Part
PI5C3383L
PI5C3383Q
PI5C3383S
Pin - Package
24 TSSO P (L)
24 Q SO P (Q )
24 SO IC (S)
Te mpe rature
40°C to +85°C
4
PS7028C
05/19/00
24-Pin QSOP (Q) Package Mechanicals
24
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PI5C3383/PI5C32383
5-Bit, 4-Port Bus Exchange Switch
24-Pin TSSOP (L) Package Mechanicals
24
.169
.177
4.3
4.5
1
.303
.311
7.7
7.9
.047
1.20
Max
.004
.008
0.45 .018
0.75 .030
.252
BSC
6.4
0.09
0.20
SEATING
PLANE
.0256
BSC
0.65
.007
.012
0.19
0.30
.002
.006
0.05
0.15
X.XX DENOTES CONTROLLING
X.XX DIMENSIONS IN MILLIMETERS
.150
.157
3.81
3.99
.015 x 45˚
0.38
1
.337
.344
8.56
8.74
.016 0.406
.050 1.27
.053
.069
1.35
1.75
.228
.244
5.79
6.20
.007
.010
0.178
0.254
.033
0.84
SEATING
PLANE
.004 0.101
.010 0.254
.025
typical
0.635
.008 0.203
.012 0.305
X.XX DENOTES DIMENSIONS
X.XX IN MILLIMETERS
5
PS7028C
05/19/00
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