Type: Bus switch voltage - Power supply: 2.3V ~ 3.6V Circuit: 1 x 1:1 Voltage source: Single power supply Logic circuit belongs to the family: - Four-bit bus analog switch
Type: Bus switch voltage - Power supply: 2.3V ~ 3.6V Circuit: 1 x 1:1 Voltage source: Single power supply Logic circuit belongs to the family: - Four-bit bus analog switch
2.5V/3.3V, High Bandwidth, Hot Insertion,4-Bit, 2-Port Bus Switch with Individual Enables
Features
Î
Î
Î
Î
Î
Î
Î
Î
Near-Zero propagation delay
5-ohm switches connect inputs to outputs
High Bandwidth (>400 MHz)
Rail-to-Rail, or 2.5V or 3.3V Switching
5V I/O Tolerant
2.5V Supply Voltage Operation
Permits Hot Insertion
Packaging (Pb-free & Green available):
– 14-pin 150-mil wide plastic SOIC (W)
– 14-pin 170-mil wide plastic TSSOP (L)
– 16-pin 150-mil wide plastic QSOP (Q)
Description
Diodes’ PI3C3125 and PI3C3126 are 2.5 volt or 3.3 volt, 4-bit
bus switches 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.
The PI3C3125 device has active LOW enables, and the PI3C3126
has active HIGH enables. It is very useful in switching signals that
have high bandwidth (>400 MHz).
Applications
Î
High Bandwidth Data Switching
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Hot Docking
PI3C3125 Block Diagram
PI3C3126 Block Diagram
A
0
BE
0
B
1
A
1
BE
1
B
2
A
2
BE
2
B
3
A
3
BE
3
B
3
B
2
B
1
B
0
A
0
BE
0
A
1
BE
1
A
2
BE
2
A
3
BE
3
B
0
PI3C3125/PI3C3126
Document Number DS40194 Rev 1-2
1
www.diodes.com
September 2017
Diodes Incorporated
A product Line of
Diodes Incorporated
PI3C3125/PI3C3126
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 & V
CC
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
Junction Temperature .............................................................................125°C
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.
PI3C3125 14-Pin Configuration
PI3C3126 14-Pin Configuration
BE0
A0
B0
BE1
A1
B1
GND
1
14
2
13
3
14-PIN 12
4
W14 11
5
L14 10
6
9
7
8
Vcc
BE3
A3
B3
BE2
A2
B2
BE0
A0
B0
BE1
A1
B1
GND
1
14
2
13
3
14-PIN 12
4
W14 11
5
L14 10
6
9
7
8
Vcc
BE3
A3
B3
BE2
A2
B2
PI3C3125 16-Pin Configuration
PI3C3126 16-Pin Configuration
NC
BE0
A0
B0
BE1
A1
B1
GND
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
NC
BE0
A0
B0
BE1
A1
B1
GND
Truth Table
(1)
PI3C3125 PI3C3126
BEn
BEn
X*
H
L
X
L
H
1
16
2
15
3
16-PIN 14
4
Q16 13
5
12
6
11
7
10
8
9
An
Hi-Z
Hi-Z
Bn
Bn
Hi-Z
Hi-Z
An
Vcc
BE3
A3
B3
BE2
A2
B2
NC
V
CC
Function
Disconnect
Disconnect
Disconnect
Pin Description
Pin Name
Description
BEn
Switch Enable (PI3C3125)
BEn
Switch Enable (PI3C3126)
A3 - A0
Bus A
Bus B
B3 - B0
V
CC
GND
PI3C3125/PI3C3126
Document Number DS40194 Rev 1-2
Power
Ground
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.
GND
V
CC
V
CC
2
www.diodes.com
September 2017
Diodes Incorporated
A product Line of
Diodes Incorporated
PI3C3125/PI3C3126
DC Electrical Characteristics
(Over 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(3)
V
IK
R
ON
Description
Input HIGH Voltage
Input LOW Voltage
Input HIGH current
Input LOW Current
High Impedance Output
Current
Clamp Diode Voltage
Switch ON Resistance
(4)
Test Conditions
(1)
Guearanteed Logic HIGH Level
Guaranteed Logic LOW Level –0.5
V
CC
=
Max.,
V
IN
= V
CC
V
CC
=
Max.,
V
IN
= GND
0
≤
A, B
≤
V
CC
V
CC
=
Min.,
I
IN
= –18mA
V
CC
= Min.,
V
IN
= 0.0V,
I
ON
=
48mA or 60mA
V
CC
= Min.,
V
IN
= 2.4V,
I
ON
= 15mA
Min.
2.0
Typ.
(2)
0.8
Max
Units
V
±1
±1
±1
–0.73
5
8
–1.2
7
15
µA
µA
V
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, 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.
Capacitance
(T
A
= 25°C, f = 1 MHz)
Parameters
(1)
C
IN
C
OFF
C
ON
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
pF
Notes:
1. This parameter is determined by device characterization but is not production tested.
Power Supply Characteristics
Parameters
I
CC
∆I
CC
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 ΔI
CC.
Description
Quiescent Power Supply
Current
Supply Current per Input
HIGH
Test Conditions
V
CC
= Max
V
CC
= Max
V
IN
= GND or V
CC
V
IN
= 3.0V
(3)
Min.
Typ.
(2)
260
Max.
500
750
Units
µA
PI3C3125/PI3C3126
Document Number DS40194 Rev 1-2
3
www.diodes.com
September 2017
Diodes Incorporated
A product Line of
Diodes Incorporated
PI3C3125/PI3C3126
PI3C3125/PI3C3126 Switching Characteristics over 3.3V Operating Range
Parameters
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
Description
Propogation Delay
(1,2)
A to B, B to A
Bus Enable Time
Bus Disable Time
Conditions
C
L
=50pF
R
L
= 500Ω
C
L
=50pF
R
L
= 500Ω
R = 500Ω
PI3C3125/PI3C3126
Com.
Min.
Max.
0.25
1.5
1.5
6.5
5.5
Units
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.
PI3C3125/PI3C3126 Switching Characteristics over 2.5V Operating Range
Parameters
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
Description
Propogation Delay
(1,2)
A to B, B to A
Bus Enable Time
Bus Disable Time
Conditions
C
L
=50pF
R
L
= 500Ω
C
L
=50pF
R
L
= 500Ω
R = 500Ω
PI3C3125/PI3C3126
Com.
Min.
Max.
0.25
1.5
1.5
9.8
8.3
Units
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.
4.0
VCC
V
3.1V
2.9V
2.7V
2.5V
2.3V
3.8V
3.6V
3.4V
3.2V
3.0V
2.8V
2.0
VOUT
0.0
0.0
1.0
2.0
3.0
4.0
5.0
)
V
IN
(V)
Switch Output Voltage vs. Input Voltage over Various Supply Voltages
Type: Bus switch voltage - Power supply: 2.3V ~ 3.6V Circuit: 1 x 1:1 Voltage source: Single power supply Logic circuit belongs to the family: - Four-bit bus analog switch
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