21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI5C3384A
10-Bit, 2-Port BusSwitch
Product Features
Near-zero propagation delay
Direct bus connection when switches are ON
Ultra-low quiescent power (0.2µA typical)
Ideally suited for notebook applications
Packages available:
24-pin 300-mil wide plastic PDIP (P24)
24-pin 150-mil wide plastic QSOP (Q24)
24-pin 300-mil wide plastic SOIC (S24)
Product Description
Pericom Semiconductors PI5C series of logic circuits are produced
using the Companys advanced submicron CMOS technology,
achieving industry performance.
The PI5C3384A is a 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.
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
24-Pin
5
P24
6
Q24
S24
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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PI5C3384A
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 condi-
tions above those indicated in the operational sec-
tions 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, TA = 40°C to +85°C, VCC = 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
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
= –18mA
A (B) = 0V, B (A) = V
CC
Min.
2.0
–0.5
—
—
—
—
100
—
Typ
(2)
—
—
—
—
—
–0.7
—
150
2
7
Max.
—
0.8
±1
±1
±1
–1.2
—
—
5
12
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
6
9
22
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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PI5C3384A
10-Bit, 2-Port BusSwitch
Parame te rs
I
CC
∆I
CC
D e s cription
Q uiescent Power
Supply Current
Supply Current per
Input @ TTL HIGH
Te s t Conditions
V
CC
= Max.,
V
IN
= GND or V
CC
V
CC
= Max.,
V
IN =
3.4V
(3)
V
CC
= Max.,
A and B Pins O pen
BE1 or BE2 = GND
Control Input Toggling
50% Duty Cycle
M in.
Typ.
(2)
0.1
M ax.
3.0
2.5
Units
µA
mA
I
CCD
Supply Current per
Input per MHz
(4)
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 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.
PI5C3384A Switching Characteristics Over Operating Range
PI5C3384A
Parameters Description
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
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
= 50pF
R
L
= 500Ω
Min.
—
1.5
1.5
Max.
0.25
6.5
5.5
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
0.25ns 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.
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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ST - Low Power RF
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