PI5C3390
PI5C32390 (25-ohm)
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
16-to-8 Multiplexer/Demultiplexer
Bus Switch
Features:
• Near-Zero propagation delay
•
•
•
•
Low noise, 25-ohm version (PI5C32390)
5-ohm switches connect inputs to outputs (PI5C3390)
Direct bus connection when switches are ON
Ultra-low quiescent power (0.2µA typical)
– Ideally suited for notebook applications
• Packaging (Pb-free & Green available):
– 28-pin 150-mil wide plastic QSOP (Q)
Description:
Pericom Semiconductor’s PI5C3390 and PI5C32390 are 16-to-8
multiplexer/demultiplexer bus switches with a low On-Resistance
allowing inputs to be connected directly to outputs. The two enable
inputs connect each of eight I/O to the common I/O pin. This
multiplexer function can be used to select and route logic signals to
form crossbar switches, isolate bus capacitance, or provide a zero
delay switch connection. The bus switch creates no additional
ground bounce noise or additional propagation delay. The PI5C32390
is designed with an internal 25-ohm resistor reducing noise reflection
in high-speed applications.
Block Diagram
A
0
C
0
Pin Configuration
A
0
B
0
C
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
V
CC
A
7
B
7
C
7
A
6
B
6
C
6
A
5
B
5
C
5
A
4
B
4
C
4
BEN
A
7
AEN
B
0
C
7
A
1
B
1
C
1
A
2
B
2
C
2
A
3
B
3
C
3
AEN
GND
B
7
BEN
Truth Table
(1)
AEN
H
L
H
L
BEN
H
H
L
L
A Sw
Off
On
Off
On
B Sw
Off
Off
On
On
Function
Disconnect
A to C
B to C
A, B to C
Pin Description
Pin Name
AEN, BEN
A
0
-
A7
B
0
-B
7
C0-C7
I/O
I
I/O
I/O
I/O
Description
Bus Output Enable (Active LOW)
Bus A
Bus B
Bus C
Note:
1. H = High Voltage Level
L = Low Voltage Level
1
PS7030E
09/15/04
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI5C3390; PI5C32390
16:8 Multiplexer/Demultiplexer
Bus 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 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 condi-
tions 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
= 48 mA
V
CC
= Min., V
IN
= 2.4V,
I
ON
= 15 mA
PI5C3390
PI5C32390
PI5C3390
PI5C32390
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
≤
A, B, C
≤
V
CC
V
CC
= Min., I
IN
= –18 mA
A, B (C) = 0V,
C
(A, B) = V
CC
100
—
—
20
—
20
Min.
2.0
–0.5
—
—
—
Typ
(2)
—
—
—
—
—
–0.7
—
150
5
28
10
35
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
A/B Capacitance, Switch Off
A/B Capacitance, Switch On
Test Conditions
V
IN
= 0V
V
IN
= 0V
V
IN
= 0V
Typ
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 Vcc= 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 A, B, and C pins at indicated current through the switch. On-Resistance is determined by the lower of
the voltages on the two (A,B,C) pins.
5. This parameter is determined by device characterization but is not production tested.
2
PS7030E
09/15/04
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI5C3390; PI5C32390
16:8 Multiplexer/Demultiplexer
Bus 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)
V
CC
= Max.
V
CC
= Max.
V
CC
= Max.,
A, B, and C 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
(2)
0.2
—
—
Max.
30
3.5
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, and C 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, and C inputs generate no significant AC or DC currents as they transition. This parameter is not tested, but is guaranteed by design.
5. Values for these conditions are examples of the Icc formula. These limits are guaranteed but not tested.
PI5C3390 Switching Characteristics over Operating Range
PI5C3390
Com
Typ.
0.25
—
—
Parameters
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
Description
Propagation Delay
(2,3)
A, B to/from C
Bus Enable Time
AEN/BEN to A, B, C
Bus Disable Time
AEN/BEN to A, B, C
Conditions
(1)
C
L
= 50 pF
R
L
= 500ohm
Min.
—
1.5
1.5
Max.
—
6.5
5.5
Unit
ns
ns
ns
PI5C32390 Switching Characteristics over Operating Range
PI5C32390
Com
Typ.
1.25
—
—
Parameters
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
Description
Propagation Delay
(2,3)
A, B to/from C
Bus Enable Time
AEN/BEN to A, B, C
Bus Disable Time
AEN/BEN to A, B, C
Conditions
(1)
C
L
= 50 pF
R
L
= 500ohm
Min.
—
1.5
1.5
Max.
—
6.5
5.5
Unit
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 50 pF 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
PS7030E
09/15/04
Notes:
1. Thermal characteristics can be found on the company web site at www.pericom.com/packaging/
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI5C3390; PI5C32390
16:8 Multiplexer/Demultiplexer
Bus Switch
Packaging Mechanical: 28-pin QSOP (Q)
28
.008
0.20
MIN.
0.150
0.157
3.81
3.99
Guage Plane
.008
.013
0.20
0.33
.010
0.254
1
.386 9.804
.394 10.009
Detail A
.016
.035
0.41
0.89
.041
1.04
REF
0˚-6˚
.033
REF
0.84
1.35 .053
1.75 .069
SEATING
PLANE
.015 x 45˚
Detail A
.007 0.178
.010 0.254
0.41 .016
1.27 .050
.228
.244
5.79
6.19
.025
BSC
0.635
.008 0.203
.012 0.305
.004 0.101
.010 0.254
X.XX DENOTES DIMENSIONS
X.XX IN MILLIMETERS
Ordering Information
Ordering Code
PI5C3390Q
PI5C3390QE
PI5C32390Q
PI5C32390QE
Package Code
Q
Q
Q
Q
Package Description
28-pin 150-mil wide plastic QSOP
Pb-free & Green, 28-pin 150-mil wide plastic QSOP
28-pin 150-mil wide plastic QSOP
Pb-free & Green, 28-pin 150-mil wide plastic QSOP
Pericom Semiconductor Corporation • 1-800-435-2336 • www.pericom.com
4
PS7030E
09/15/04
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