The PI3B3245 is a 3.3V 8-bit, 2-port bus switch designed with a
low On-Resistance (5-ohm) allowing inputs to be connected di-
rectly to outputs. The bus switch creates no additional propaga-
tional delay or additional ground bounce noise. The switches are
turned ON by the Bus Enable (BE) input signal.
à
Ideally suited for notebook applications
ÎÎ
TTL-compatible control of inputs levels
ÎÎ
ESD protection (2kV Human Body Model and 200V
Machine Model)
ÎÎ
Packaging (Pb-free & Green):
à
20-pin SOIC (S)
Block Diagram
A
0
SW
Pin Configuration
B
0
A
7
SW
B
7
SW
BE
A
B
NC
A
0
A
1
A
2
A
3
A
4
A
5
A
6
A
7
GND
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
Vcc
BE
B
0
B
1
B
2
B3
B
4
B5
B
6
B7
BE
Truth Table
Function
Disconnect
Connect
Note:
H = High Voltage Level, L = Low Voltage Level, Hi-Z = High Impedance
Pin Description
BE
H
L
A0-7
Hi-Z
B0-7
Pin Name
BE
A0-7
B0-7
GND
V
CC
Description
Bus Enable Input (Active LOW)
Bus A
Bus B
Ground
Power
All trademarks are property of their respective owners.
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www.diodes.com
01/09/17
A product Line of
Diodes Incorporated
PI3B3245
Absolute Maximum Ratings
Parameter
Storage Temperature
Ambient Temperature with Power Applied
Supply Voltage to Ground Potential
DC Input Voltage
DC Output Current
Power Dissipation
Stress beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device.
Min.
-65
-40
-0.5
-0.5
-
-
Max.
150
85
4.6
4.6
120
0.5
Units
o
o
C
C
V
V
mA
W
DC Electrical Characteristics
(Over the Operating Range, T
A
= –40°C to +85°C, V
CC
= 3.3V ±10%)
Parameters
V
IH
V
IL
I
IH
I
IL
I
OZH
V
IK
R
ON
Notes:
1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at V
CC
= 3.3V, T
A
= 25°C ambient and maximum loading.
3. 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.
Description
Input HIGH Voltage
Input LOW Voltage
Input HIGH Current
Input LOW Current
Clamp Diode Voltage
Switch On Resistance
(3)
Test Conditions
(1)
Guaranteed Logic HIGH Level
Guaranteed Logic LOW Level
V
CC
= Max., V
IN
= V
CC
V
CC
= Max., V
IN
= GND
V
CC
= Min., I
IN
= –18 mA
V
CC
= Min., V
IN
= 0.0V, I
ON
= 48mA
or 64mA
V
CC
= Min, V
IN
= 2.4V, I
ON
= 15mA
Min
2.0
-0.5
Typ
(2)
Max
0.8
±1
±1
±1
-1.2
Units
V
V
μA
μA
μA
V
Ω
High Impedance Output Current 0 ≤ A
N
, B
N
≤ V
CC
5
10
8
17
Capacitance
(T
A
= 25°C, f = 1 MHz)
Parameters
(1)
C
IN
C
OFF
C
ON
Notes:
1. This parameter is determined by device characterization but is not production tested.
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
3.0
8.0
16.0
Units
pF
pF
pF
All trademarks are property of their respective owners.
17-0007
2
www.diodes.com
01/09/17
A product Line of
Diodes Incorporated
PI3B3245
Power Supply Characteristics
Parameters
I
CC
ΔI
CC
Notes:
1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device.
2. Typical values are at V
CC
= 3.3V, +25°C ambient.
3. Per TTL driven input (control input only); A and B pins do not contribute to I
CC
.
Description
Supply Current per Input HIGH
Test Conditions
(1)
V
IN
= GND or V
CC
V
IN
= 3.0V
(3)
V
CC
= Max.
Min
Typ
(2)
0.1
Max
3.0
750
Units
μA
μA
Quiescent Power Supply Current V
CC
= Max.
Switching Characteristics over Operating Range
Com.
Parameters
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
Notes:
1. This parameter is guaranteed but not tested on Propagation Delays.
2. 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.
Description
Propagation Delay
(1,2)
Ax to Bx, Bx to Ax
Bus Enable Time
BE to Ax or Bx
Bus Disable Time
BE to Ax or Bx
Test Conditions
Min
Max
0.25
Units
CL = 50 pF
RL = 500Ω
1.0
1.0
4.0
4.5
ns
Applications Information
Logic Inputs
The logic control inputs can be driven up to +3.6V regardless of the supply voltage. For example, given a + 3.3V supply, A
N
may be
driven low to 0V and high to 3.6V. Driving B
N
Rail-to-Rail® minimizes power consumption.
Power-Supply Sequencing and Hot-Plug Information
Proper power-supply sequencing is recommended for all CMOS devices. Always apply V
CC
and GND before applying signals to
input/output or control pins.
Rail-to-Rail is a registeredtrademark of Nippon Motorola, Ltd.
All trademarks are property of their respective owners.
17-0007
3
www.diodes.com
01/09/17
A product Line of
Diodes Incorporated
PI3B3245
Packaging Mechanical: 20-Pin SOIC (S)
20
DOCUMENT CONTROL NO.
PD - 1006
REVISION: D
.2914
.2992
7.40
7.60
DATE: 03/09/05
.010
.029
1
0.254
x 45˚
0.737
.496
12.60
.511
12.99
0-8˚
.0091
.0125
0.23
0.32
.020 0.508
REF
.030 0.762
1
0.41 .016
1.27 .050
.0926
.1043
2.35
2.65
SEATING
PLANE
.394
.419
10.00
10.65
.050
BSC
1.27
.013
.020
0.33
0.51
.0040
.0118
0.10
0.30
X.XX
DENOTES CONTROLLING
X.XX
DIMENSIONS IN MILLIMETERS
Notes:
1) Controlling dimensions in millimeters.
2) Ref: JEDEC MS-013D/AC
Pericom Semiconductor Corporation
3545 N. 1st Street, San Jose, CA 95134
1-800-435-2335
• www.pericom.com
DESCRIPTION: 20-Pin, 300-Mil Wide, SOIC
PACKAGE CODE: S
Note: For latest package info, please check: http://www.pericom.com/support/packaging/packaging-mechanicals-and-thermal-characteristics/
Ordering Information
Ordering Code
PI3B3245SE
PI3B3245SEX
Package Code
S
S
Package Type
20-pin, 300Mil Wide (SOIC)
20-pin, 300Mil Wide (SOIC), Tape & Reel
Notes:
1. Thermal characteristics can be found on the company web site at www.pericom.com/packaging/
2. E = Pb-free and Green
3. Adding an X suffix = Tape/Reel
All trademarks are property of their respective owners.
17-0007
4
www.diodes.com
01/09/17
A product Line of
Diodes Incorporated
PI3B3245
IMPORTANT NOTICE
DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER
THE LAWS OF ANY JURISDICTION).
Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further no-
tice to this document and any product described herein. Diodes Incorporated does not assume any liability arising out of the application or use of this document or
any product described herein; neither does Diodes Incorporated convey any license under its patent or trademark rights, nor the rights of others. Any Customer
or user of this document or products described herein in such applications shall assume all risks of such use and will agree to hold Diodes Incorporated and all
the companies whose products are represented on Diodes Incorporated website, harmless against all damages.
Diodes Incorporated does not warrant or accept any liability whatsoever in respect of any products purchased through unauthorized sales channel.
Should Customers purchase or use Diodes Incorporated products for any unintended or unauthorized application, Customers shall indemnify and hold Diodes
Incorporated and its representatives harmless against all claims, damages, expenses, and attorney fees arising out of, directly or indirectly, any claim of personal
injury or death associated with such unintended or unauthorized application.
Products described herein may be covered by one or more United States, international or foreign patents pending. Product names and markings noted herein
may also be covered by one or more United States, international or foreign trademarks.
This document is written in English but may be translated into multiple languages for reference. Only the English version of this document is the final and determi-
native format released by Diodes Incorporated.
LIFE SUPPORT
Diodes Incorporated products are specifically not authorized for use as critical components in life support devices or systems without the express written approval
of the Chief Executive Officer of Diodes Incorporated. As used herein:
A. Life support devices or systems are devices or systems which:
1. are intended to implant into the body, or
2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided in the labeling can be reasonably
expected to result in significant injury to the user.
B. A critical component is any component in a life support device or system whose failure to perform can be reasonably expected to cause the
failure of the life support device or to affect its safety or effectiveness.
Customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support devices or systems, and acknowledge
and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products and any use of Diodes Incorporated
products in such safety-critical, life support devices or systems, notwithstanding any devices- or systems-related information or support that may be provided by
Diodes Incorporated. Further, Customers must fully indemnify Diodes Incorporated and its representatives against any damages arising out of the use of Diodes
Incorporated products in such safety-critical, life support devices or systems.
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