21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI5B3384/3384C/32384 (25Ω)
Ω
PI5C3384
10-BIT, 2-PORT BusSwitch
PI5C3384C
PI5C32384 (25Ω)
Ω
Product Features:
• Near-zero propagation delay
• Low noise, 25Ω version (PI5C32384)
• 5Ω switches connect inputs to outputs (PI5C3384)
• Direct bus connection when switches are ON
• Ultra-low quiescent power (0.2 µA typical)
– Ideally suited for notebook applications
• Packages available:
– 24-pin 300-mil wide plastic PDIP (P)
– 24-pin 150-mil wide plastic QSOP (Q)
– 24-pin 150-mil wide plastic TQSOP (R)
– 24-pin 300-mil wide plastic SOIC (S)
10-Bit, 2-Port BusSwitch
Product Description:
Pericom Semiconductor’s PI5C series of logic circuits are pro-
duced in the Company’s advanced sub-micron CMOS technology,
achieving industry performance.
The PI5C3384, PI5C3384C, and PI5C32384 are 10-bit, 2-port bus
switches 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. Two bus enable
signals are provided, one for each of the upper and lower five bits
of the two 10-bit buses. The PI5C32384 is designed with an internal
25Ω resistor reducing noise reflection in high-speed applications.
Logic Block Diagram
A
0
B
0
Product Pin Configuration
A
4
B
4
A
5
B
5
A
9
B
9
BE
A
B
0
A
0
A
1
B
1
B
2
A
2
A
3
B
3
B
4
A
4
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
Vcc
B
9
A
9
A
8
B
8
B
7
A
7
A
6
B
6
B
5
A
5
BE
B
BE
A
BE
B
Product Pin Description
Pin Name
BE
A
, BE
B
A
0
-A
9
B
0
-A
9
GND
V
CC
Description
Bus Enable Inputs (Active LOW)
Bus A
Bus B
Ground
Power
Truth Table
(1)
Function
Disconnect
Connect
Connect
Connect
Note:
1. H
X
L
Hi-Z
=
=
=
=
BE
A
H
L
H
L
BE
B
H
H
L
L
B
0-B4
Hi-Z
A
0-A4
Hi-Z
A
0-A4
B
5-B9
Hi-Z
Hi-Z
A
5-A9
A
5-A9
High Voltage Level
Don’t Care
Low Voltage Level
High Impedance
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PPI5B3384/3384C/32384 (25Ω)
Ω
10-BIT, 2-PORT BusSwitch
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 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
= 48 mA
V
CC
= Min., V
IN
= 2.4V,
I
ON
= 15 mA
PI5C3384
PI5C3384C
PI5C32384
PI5C3384
PI5C3384C
PI5C32384
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
≤
V
CC
V
CC
= Min., I
IN
= –18 mA
A (B) = 0V, B (A) = V
CC
Min.
2.0
–0.5
—
—
—
—
100
—
—
—
20
—
—
20
Typ
(2)
—
—
—
—
—
–0.7
—
150
5
5
28
10
10
35
Max.
—
0.8
±1
±1
±1
–1.2
—
—
7
7
40
15
15
48
Units
V
V
µA
µA
µA
V
mA
mV
Ω
Ω
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
—
—
—
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 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 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.
5. This parameter is determined by device characterization but is not production tested.
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PI5B3384/3384C/32384 (25Ω)
Ω
10-BIT, 2-PORT BusSwitch
Power Supply Characteristics
Parameters Description
I
CC
Quiescent Power
Supply Current
Test Conditions
(1)
V
CC
= Max.,
V
IN
= GND or V
CC
PI5C3384
PI5C32384
PI5C3384C
∆I
CC
I
CCD
Supply Current per
Input @ TTL HIGH
Supply Current per
Input per MHz
(4)
V
CC
= Max., V
IN
= 3.4V
(3)
V
CC
= Max.,
A and B Pins Open
BE
1
or BE
2
= GND
Control Input Toggling
50% Duty Cycle
Min.
—
—
—
—
Typ
(2)
0.1
60
—
—
Max.
3.0
100
2.5
0.25
Units
µA
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 and B 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 and B inputs generate no significant AC or DC currents as they transition. This parameter is not tested, but is
guaranteed by design.
PI5C3384/3384C Switching Characteristics over Operating Range
PI5C3384/3384C
Parameters
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
Description
Propagation Delay
(2,3)
Ax to Bx, Bx to Ax
Bus Enable Time
BE
X
to Ax or Bx
Bus Disable Time
BEx to Ax or Bx
Conditions
(1)
C
L
= 50 pF
R
L
= 500Ω
Min
—
1.5
1.5
Typ
0.25
—
—
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.
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PPI5B3384/3384C/32384 (25Ω)
Ω
10-BIT, 2-PORT BusSwitch
PI5C32384 Switching Characteristics over Operating Range
PI5C32384
Parameters
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
Description
Propagation Delay
(2,3)
Ax to Bx, Bx to Ax
Bus Enable Time
BE
X
to Ax or Bx
Bus Disable Time
BEx to Ax or Bx
Conditions
(1)
C
L
= 50 pF
R
L
= 500Ω
Min
—
1.5
1.5
Typ
1.25
—
—
Max
—
7.5
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.
Pericom Semiconductor Corporation
2380 Bering Drive • San Jose, CA 95131 • 1-800-435-2336 • Fax (408) 435-1100 • http://www.pericom.com
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