PERICOM PI5C3384A

PI5C3384A
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10-Bit, 2-Port BusSwitch
Product Features
Product Description
• 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)
Pericom Semiconductor’s PI5C series of logic circuits are produced
using the Company’s 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
Product Pin Configuration
A0
B0
A4
B4
A5
B5
A9
B9
BEA
B0
A0
A1
B1
B2
A2
A3
B3
B4
A4
GND
BEA
Pin Name
BEA, BEB
A0-A9
B0-A9
GND
VCC
Truth Table(1)
Note:
1. H
X
L
Hi-Z
=
=
=
=
24
23
22
21
20
19
18
17
16
15
14
13
Vcc
B9
A9
A8
B8
B7
A7
A6
B6
B5
A5
BEB
Product Pin Description
BEB
Function
Disconnect
Connect
Connect
Connect
1
2
3
4
24-Pin
5
P24
6
Q24
S24
7
8
9
10
11
12
BEA
H
L
H
L
BEB
H
H
L
L
B0-B4
Hi-Z
A0-A4
Hi-Z
A0-A4
B5-B9
Hi-Z
Hi-Z
A5-A9
A5-A9
Description
Bus Enable Inputs (Active LOW)
Bus A
Bus B
Ground
Power
High Voltage Level
Don’t Care
Low Voltage Level
High Impedance
1
PS8390
06/04/99
PI5C3384A
10-Bit,
2-Port
BusSwitch
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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, TA = –40°C to +85°C, VCC = 5V ±5%)
Test Conditions(1)
Parameters Description
Min.
Typ(2)
Max.
Units
VIH
Input HIGH Voltage
Guaranteed Logic HIGH Level
2.0
—
—
V
VIL
Input LOW Voltage
Guaranteed Logic LOW Level
–0.5
—
0.8
V
IIH
Input HIGH Current
VCC = Max., VIN = VCC
—
—
±1
µA
IIL
Input LOW Current
VCC = Max., VIN = GND
—
—
±1
µA
IOZH
High-Impedance Output Current
0 ≤ A, B ≤ VCC
—
—
±1
µA
VIK
Clamp Diode Voltage
VCC = Min., IIN = –18mA
—
–0.7
–1.2
V
A (B) = 0V, B (A) = VCC
100
—
—
mA
—
150
—
mV
VCC = Min., VIN = 0.0V,
ION = 48mA
2
5
Ω
VCC = Min., VIN = 2.4V,
ION = 15mA
7
12
Ω
(3)
IOS
Short Circuit Current
VH
Input Hysteresis at Control Pins
RON
Switch On Resistance
(4)
Capacitance (TA = 25°C, f = 1 MHz)
Parameters(5)
Description
Test Conditions
Typ
Units
CIN
COFF
Input Capacitance
A/B Capacitance, Switch Off
VIN = 0V
VIN = 0V
6
9
pF
pF
CON
A/B Capacitance, Switch On
VIN = 0V
22
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, TA = 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.
2
PS8390
06/04/99
PI5C3384A
10-Bit,
2-Port
BusSwitch
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Parame te rs
M in.
Typ.(2)
M ax.
Units
VCC = Max.,
VIN = GND or VCC
—
0.1
3.0
µA
Supply Current per
Input @ TTL HIGH
VCC = Max.,
VIN = 3.4V(3)
—
—
2.5
mA
Supply Current per
Input per MHz(4)
VCC = Max.,
A and B Pins O pen
BE1 or BE2 = GND
Control Input Toggling
50% Duty Cycle
—
—
0.25
mA/
MHz
D e s cription
Te s t Conditions
ICC
Q uiescent Power
Supply Current
∆ICC
ICCD
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 (VIN = 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
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
Propagation Delay(2,3)
Ax to Bx, Bx to Ax
Bus Enable Time
BEX to Ax or Bx
Bus Disable Time
BEx to Ax or Bx
Conditions(1)
Min.
Max.
CL = 50pF
RL = 500Ω
—
0.25
1.5
6.5
1.5
5.5
Units
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.
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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PS8390
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