PI3C3126 - Pericom

PI3C3126
2.5V/3.3V, High Bandwidth, Hot Insertion,4-Bit,
2-Port Bus Switch with Individual Enables
Features
Description
• Near-Zero propagation delay
Pericom Semiconductor’s PI3C3126 is a 2.5 volt or 3.3 volt, 4-bit
bus switch designed with four individual 5-ohm bus switches
with fast indiviual enables in an industry standard 74XX125/126
pinout. When enabled via the associated Bus Enable pin, the “A”
pin is directly connected to the “B” pin for that particular gate.
The bus switch introduces no additional propagation delay or
additional ground bounce noise.
• 5-ohm switches connect inputs to outputs
• High Bandwidth (>400 MHz)
• 2.5V/3.3V Supply Voltage Operation
• Rail-to-Rail, or 2.5V or 3.3V Switching
• 5V I/O Tolerant
The PI3C3126 has active HIGH enables. It is very useful in
switching signals that have high bandwidth (>400 MHz).
• Permits Hot Insertion
• Packaging (Pb-free & Green available):
– 14-pin 170-mil wide plastic TSSOP (L)
– 16-pin 150-mil wide plastic QSOP (Q)
Applications
• High Bandwidth Data Switching
• Hot Docking
Block Diagram
B0
A0
BE0
B1
A1
BE1
B2
A2
BE2
B3
A3
BE3
11-0003
1
PS9087A
09/24/10
PI3C3126
2.5V/3.3V, High Bandwidth, Hot Insertion,4-Bit,
2-Port Bus Switch with Individual Enables
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 +4.6V
Supply Voltage to Ground Potential (Outputs & D/O Only)...–0.5V to +4.6V
DC Input Voltage.....................................................................–0.5V to +5.5V
DC Output Current................................................................................ 120mA
Power Dissipation.................................................................................... 0.5W
14-Pin Configuration
BE0
A0
B0
BE1
A1
B1
GND
1
14
2
13
3 14-PIN 12
4 L14 11
5
10
6
9
7
8
VCC
GND
11-0003
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.
16-Pin Configuration
NC
BE0
A0
B0
BE1
A1
B1
GND
Vcc
BE3
A3
B3
BE2
A2
B2
1
16
2
15
3
16-PIN 14
4
Q16 13
5
12
6
11
7
10
8
9
Vcc
BE3
A3
B3
BE2
A2
B2
NC
Truth Table(1)
Pin Description
Pin Name
BEn
A3 - A0
B3 - B0
Note:
Description
Switch Enable
Bus A
Bus B
BEn
X
L
H
Power
Ground
An
Bn
VCC
Hi-Z
Hi-Z
Bn
Hi-Z
Hi-Z
An
GND
VCC
VCC
Function
Disconnect
Disconnect
Disconnect
Note:
1. H = High Voltage Level, L = Low Voltage Level
HI-Z = High Impedance, X = Don’t Care
* A pull-up resistor should be provided for power-up protection.
2
PS9087A
09/24/10
PI3C3126
2.5V/3.3V, High Bandwidth, Hot Insertion,4-Bit,
2-Port Bus Switch with Individual Enables
DC Electrical Characteristics (Over Operating Range, TA = –40°C to +85°C, VCC = 3.3V ±10%)
Parameters
VIH
VIL
IIH
IIL
VIK
Description
Input HIGH Voltage
Input LOW Voltage
Input HIGH current
Input LOW Current
High Impedance Output
Current
Clamp Diode Voltage
RON
Switch ON Resistance(4)
IOZH(3)
Test Conditions(1)
Guearanteed Logic HIGH Level
Guaranteed Logic LOW Level –0.5
VCC = Max., VIN = VCC
VCC = Max., VIN = GND
Min.
2.0
Typ.(2)
Max
Units
V
0.8
±1
±1
0 ≤ A, B ≤ VCC
µA
±1
VCC = Min., IIN = –18mA
VCC = Min., VIN = 0.0V, ION = 48mA or 60mA
VCC = Min., VIN = 2.4V, ION = 15mA
–0.73
–1.2
V
5
8
7
15
Ω
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. 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.
Capacitance (TA = 25°C, f = 1 MHz)
Parameters(1)
CIN
COFF
CON
Description
Input Capacitance
A/B Capacitance, Switch Off
A/B Capacitance, Switch On
Test Conditions
VIN = 0V
VIN = 0V
VIN = 0V
Typ.
3.5
5.0
10.0
Units
Min.
Typ.(2)
Max.
260
500
pF
Notes:
1. This parameter is determined by device characterization but is not production tested.
Power Supply Characteristics
Parameters
Description
Quiescent Power
Supply Current
Supply Current per
Input HIGH
ICC
∆ICC
Test Conditions
VCC = Max
VIN = GND or VCC
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 = 3.3V, +25°C ambient.
3. Per driven input (control input only); A and B pins do not contribute to ΔICC.
11-0003
3
PS9087A
09/24/10
PI3C3126
2.5V/3.3V, High Bandwidth, Hot Insertion,4-Bit,
2-Port Bus Switch with Individual Enables
Switching Characteristics over 3.3V Operating Range
Com.
Parameters
Description
Conditions
tPLH
tPHL
Propogation Delay(1,2)
A to B, B to A
CL =50pF
RL = 500Ω
Bus Enable Time
CL =50pF
RL = 500Ω
R = 500Ω
tPZH
tPZL
tPHZ
tPLZ
Bus Disable Time
Min.
Max.
Units
0.25
1.5
6.5
1.5
5.5
ns
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 0.25ns 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.
Switching Characteristics over 2.5V Operating Range
Parameters
Description
Delay(1,2)
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
Com.
Min.
Conditions
Propogation
A to B, B to A
CL =50pF
RL = 500Ω
Bus Enable Time
CL =50pF
RL = 500Ω
R = 500Ω
Bus Disable Time
Max.
Units
0.25
1.5
9.8
1.5
8.3
ns
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 0.25ns 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.
11-0003
4
PS9087A
09/24/10
PI3C3126
2.5V/3.3V, High Bandwidth, Hot Insertion,4-Bit,
2-Port Bus Switch with Individual Enables
4.0
VCC
V
3.1V
2.9V
2.7V
2.5V
3.4V
3.2V
3.0V
2.8V
2.0
VOUT
)
2.3V
3.8V
3.6V
0.0
0.0
1.0
3.0
2.0
4.0
5.0
VIN (V)
Switch Output Voltage vs. Input Voltage over Various Supply Voltages
11-0003
5
PS9087A
09/24/10
PI3C3126
2.5V/3.3V, High Bandwidth, Hot Insertion,4-Bit,
2-Port Bus Switch with Individual Enables
DOCUMENT CONTROL NO.
PD - 1309
REVISION: C
DATE: 03/09/05
14
0.169
0.177
1
1
0.0256
typical
0.65
0.193
0.201
4.90
5.10
0.007
0.012
0.19
0.30
0.004 0.09
0.008 0.20
4.3
4.5
0.45
0.75
0.018
0.030
0.240
0.264
6.1
6.7
0.047
1.20
max.
SEATING
PLANE
0.002 0.05
0.006 0.15
Pericom Semiconductor Corporation
3545 N. 1st Street, San Jose, CA 95134
1-800-435-2335 • www.pericom.com
Note:
1. Package Outline Exclusive of Mold Flash and Metal Burr
2. Controlling dimentions in millimeters
3. Ref: JEDEC MO-153F/AB-1
DESCRIPTION: 14-Pin, 44mm Wide, TSSOP
PACKAGE CODE: L
11-0003
6
PS9087A
09/24/10
PI3C3126
2.5V/3.3V, High Bandwidth, Hot Insertion,4-Bit,
2-Port Bus Switch with Individual Enables
DOCUMENT CONTROL NO.
PD - 1201
REVISION: G
16
.008
0.20
MIN.
.150
.157
3.81
3.99
Guage Plane
.010
0.254
1
DATE: 11/07/07
.008
.013
0.20
0.33
Detail A
.189
.197
4.80
5.00
0˚-6˚
.016
.035
0.41
0.89
.041
1.04
REF
.015 x 45° 0.38
1
.008
0.203 REF
.053 1.35
.069 1.75
Detail A
.007
.010
0.178
0.254
SEATING
PLANE
.025
BSC
0.635
.008
.012
0.203
0.305
.004 0.101
.010 0.254
.228
.244
5.79
6.19
X.XX DENOTES DIMENSIONS IN MILLIMETERS
X.XX
Note:
1) Controlling dimensions in inches.
2) Ref: JEDEC MO-137B/AB.
3) Dimensions do not include mold flash, protrusions or gate burrs
Pericom Semiconductor Corporation
3545 N. 1st Street, San Jose, CA 95134
1-800-435-2335 • www.pericom.com
DESCRIPTION: 16-Pin 150-Mil Wide QSOP
PACKAGE CODE: Q
Note:
• For latest package info, please check: http://www.pericom.com/products/packaging/mechanicals.php
Ordering Information
Ordering Code
PI3C3126LE
PI3C3126QE
Packaging Code
Package Type
L
Q
Pb-free & Green, 14-pin TSSOP
Pb-free & Green, 16-pin QSOP
Top Mark
Notes:
• Thermal characteristics can be found on the company web site at www.pericom.com/packaging/
• E = Pb-free & Green
• Adding an X suffix = Tape/Reel
Pericom Semiconductor Corporation • 1-800-435-2336 • www.pericom.com
11-0003
7
PS9087A
09/24/10