PERICOM PI3B3383

PI3B3383
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3.3V, 5-Bit, 4-Port Bus
Exchange NanoSwitchTM
Product Features
Product Description
•
•
•
•
Pericom Semiconductor’s PI3B series of logic circuits are produced
using the Company’s advanced submicron CMOS technology,
achieving industry leading performance.
The PI3B3383 is a 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.
Near-zero propagation delay
5Ω switches connect inputs to outputs
Direct bus connection when switches are ON
Ultra-low quiescent power (0.1µA typical)
– Ideally suited for notebook applications
• Packages available:
– 24-pin 173-mil wide plastic TSSOP (L)
– 24-pin 150-mil wide plastic QSOP (Q)
Logic Block Diagram
A0
C0
Product Pin Configuration
B0
D0
A4
C4
B4
D4
BE
C0
A0
B0
D0
C1
A1
B1
D1
C2
A2
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
Vcc
D4
B4
A4
C4
D3
B3
A3
C3
D2
B2
BX
Product Pin Description
Pin Name
BE
BX
Ax
Bx
Cx
Dx
GND
VCC
BX
BE
Truth Table(1)
Function
Disconnect
Connect
Exchange
Note:
1. H
X
L
Hi-Z
=
=
=
=
BE
H
L
L
BX
X
L
H
A0-A4
Hi-Z
C0-C4
D0-D4
B0-B4
Hi-Z
D0-D4
C0-C4
Description
Bus Enable Input (Active LOW)
Bus Exchange Input
Bus A
Bus B
Bus C
Bus D
Ground
Power
High Voltage Level
Don’t Care
Low Voltage Level
High Impedance
1
PS8580
10/18/01
PI3B3383
3.3V, 5-Bit, 4-Port Bus Exchange
NanoSwitch
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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 ...................................... –0.5V to +4.6V
DC Input Voltage ................................................................... –0.5V to +4.6V
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 = 3.3V ±10%)
Parame te rs
Te s t Conditions (1)
De s cription
M in.
Typ(2)
M ax.
Units
VIH
Input HIGH Voltage
Guaranteed Logic HIGH Level
2.0
—
—
VIL
Input LOW Voltage
Guaranteed Logic LOW Level
–0.5
—
0.8
IIH
Input HIGH Current
VCC = Max., VIN = VCC
—
—
±1
IIL
Input LOW Current
VCC = Max., VIN = GND
—
—
±1
IOZH
High Impedance Output Current
0< AB, CD < VCC
—
—
±1
VIK
Clamp Diode Voltage
VCC = MIN., IIN = –18mA
—
–0.7
–1.2
V
RON
Switch On Resistance(3)
VCC = MIN., VIN = 0.0V, ION = 48mA
VCC = MIN., VIN = 2.4V, ION = 15mA
—
—
5
10
7
15
Ω
V
µA
Capacitance (TA = 25°C, f = 1 MHz)
Parame te rs (4)
De s cription
CIN
Input Capacitance
C O FF
AB/CD Capacitance, Switch Off
CON
AB/CD Capacitance, Switch On
Te s t Conditions
Typ.
Units
3.0
VIN = 0V
12.0
pF
24.0
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 = 3.3V, TA = 25°C ambient and maximum loading.
3. 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.
4. This parameter is determined by device characterization but is not production tested.
2
PS8580
10/18/01
PI3B3383
3.3V, 5-Bit, 4-Port Bus Exchange
NanoSwitch
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Power Supply Characteristics
Parame te rs
De s cription
Te s t Conditions (1)
M in.
Typ(2)
M ax.
ICC
Quiescent Power Supply Current
VCC = Max. VIN = GND or VCC

0.1
10
∆ΙCC
Supply Current per Input@ LVTTL HIGH
VCC = Max. VIN = 3.0V(3)


750
Units
µA
Notes:
1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device.
2. Typical values are at VCC = 3.0V, +25°C ambient.
3. Per LVTTL driven input (VIN = 2.4V, control inputs only); A, B, C, and D pins do not contribute to ICC.
PI3B3383 Switching Characteristics over Operating Range
PI3B3383
Com
Parame te rs
Conditions (1)
De s cription
tPLH
tPHL
Propagation Delay(2,3)
Ax to Cx, Bx to Dx
tPZH
tPZL
Bus Enable Time
BE to Cx or Dx
tPHZ
tPLZ
Bus Disable Time
BE to Cx or Dx
tBX
Bus Exchange Time, BX to Cx or Dx
C l = 50 pF
Rl = 500Ω
M in.
Typ.
M ax.
—
0.25
—
1
—
4.5
1
—
4.5
1
—
4.8
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.
3
PS8580
10/18/01
PI3B3383
3.3V, 5-Bit, 4-Port Bus Exchange
NanoSwitch
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Parameter Measurements
S1
500Ω
From Output
Under Test
CL = 50pF
(See note 1)
6V
Open
GND
500Ω
Output
Control
(Low Level
Enabling)
LOAD CIRCUIT
3V
Input
Output
Waveform 1
S1 at 6V
(see Note 2)
1.5V
1.5V
0V
tPLH
tPHL
Output
Waveform 2
S1 at Open
(see Note 2)
VOH
1.5V
Output
1.5V
VOL
Te s t
S1
tPD
Open
tPLZ/tPZL
6V
tPHZ/tPZH
GND
3V
1.5V
1.5V
0V
tPZL
tPLZ
3V
1.5V
VOL +0.3V
tPZH
VOL
tPHZ
VOH -0.3V
VOH
1.5V
0V
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
Notes:
1. CL includes probe and jig capacitance.
2. Waveform 1 is for an output with internal conditions such that the output is LOW except when disabled by the output control.
Waveform 2 is for an output with internal conditions such that the output is HIGH except when disabled by the output control.
3. All input pulses are supplied by generators having the following characteristics: PRR<10MHz, ZO = 50Ω, tr ≤2.5ns, tf ≤2.5ns.
4. The outputs are measured one at a time with one transition per measurement.
5. tPLZ and tPHZ are the same as tdis.
6. tPZL and tPZH are the same as ten.
7. tPLH and tPHL are the same as tpd.
Ordering Information
Part
Pin - Package
PI3B3383L
24 TSSOP (L)
PI3B3383Q
24 QSOP (Q)
Te mpe rature
–40°C to +85°C
Applications
Logic Inputs
The logic control inputs can be driven up to +3.6V regardless of the supply voltage. For example, given a 3.0V supply, the control or
select pins may be driven low to 0V and high to 3.6V. 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.
4
PS8580
10/18/01
PI3B3383
3.3V, 5-Bit, 4-Port Bus Exchange
NanoSwitch
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24-Pin TSSOP (L) Package
24
.169
.177
4.3
4.5
.004
.008
1
.303
.311
7.7
7.9
0.45 .018
0.75 .030
.047
1.20
Max
.252
BSC
6.4
SEATING
PLANE
.002 0.05
.006 0.15
.007
.012
0.19
0.30
.0256
BSC
0.65
0.09
0.20
X.XX DENOTES CONTROLLING
X.XX DIMENSIONS IN MILLIMETERS
24-Pin QSOP (Q) Package
24
.008
0.20
MIN.
.150
.157
.008
.013
0.20
0.33
3.81
3.99
Guage Plane
.010
0.254
.016
.035
0.41
0.89
Detail A
1
.337
.344
.041
1.04
REF
8.56
8.74
.033
0.84
0˚-6˚
.053
.069
.015 x 45˚
0.38
1.35
1.75
Detail A
.007
.010
SEATING
PLANE
.025
typical
0.635
.008 0.203
.012 0.305
.004 0.101
.010 0.254
.016
.050
0.178
0.254
0.406
1.27
.228
.244
5.79
6.20
X.XX DENOTES DIMENSIONS
X.XX IN MILLIMETERS
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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PS8580
10/18/01