PI4ULS5V201
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1-Bit Bi-directional Level Shifter with Automatic Sensing
Features
Description
VCCA can be Less than, Greater than or Equal to
VCCB
1.2V to 5.5V on A Port and 1.2V to 5.5V on B Port
High-Speed with 20 Mb/s Guaranteed Data Rate
for Push-pull application
High-Speed with 2 Mb/s Guaranteed Data Rate for
Open-drain application
No Direction-Control Signal Needed
Low Bit-to-Bit Skew
Non-preferential Power-up Sequencing
ESD protection exceeds 8KV HBM per JESD22A114
Integrated 10 kΩ Pull-up Resistors
Package: UDFN1.2x1.6-8L and SOT23-6L
The PI4ULS5V201 is a 1-bit configurable dual
supply bidirectional auto sensing translator that does not
require a directional control pin. The A and B ports are
designed to track two different power supply rails, VCCA
and VCCB respectively. Both the VCCA and VCCB supply
rails are configurable from 1.2 V to 5.5 V. This allows
voltage logic signals on the VCCA side to be translated
into lower, higher or equal value voltage logic signals on
the VCCB side, and vice-versa.
The translator has integrated 10 kΩ pull-up resistors
on the I/O lines. The integrated pull-up resistors are used
to pull-up the I/O lines to either VCCA or VCCB. The
PI4ULS5V201 is an excellent match for open-drain
applications such as the I2C communication bus.
Applications
I2C, SMBus, MDIO
Low Voltage ASIC Level Translation
Mobile Phones, PDAs, Camera
Pin Description
Pin Configuration
VCCB
VCCA
NC
A
B
NC
GND
EN
UDFN1.2x1.6-8L
A
1
GND
VCCA
6
EN
2
5
B
3
4
Pin
Name
Type
VCCA
Power
A
GND
I/O
GND
EN
Input
B
I/O
VCCB
Power
NC
-
Description
A-port supply voltage.1.2V ≤ VCCA ≤
5.5 V
Input/output A. Referenced to VCCA.
Ground.
Output enable (active High). Pull EN low
to place all outputs in 3-state mode.
Input/output B. Referenced to VCCB
B-port supply voltage. 1.2 V ≤ VCCB ≤
5.5V
Not connect
VCCB
SOT23-6L
2015-07-0024
PT0462-3
1
07/28/15
PI4ULS5V201
1-Bit Bi-directional Level Shifter with
Automatic Sensing
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Block Diagram
Figure 1: Block Diagram
Maximum Ratings
Storage Temperature ................................................................................... -65oC to +150oC
DC Supply Voltage port B..............................................................................-0.3V to +5.5V
DC Supply Voltage port A ..............................................................................-0.3V to+5.5V
Vi(A) referenced DC Input / Output Voltage..............................................-0.3V to +5.5V
Vi(B) referenced DC Input / Output Voltage...............................................-0.3V to+5.5V
Enable Control Pin DC Input Voltage ....................................... -0.3V to+5.5V
Short circuit duration (I/O to GND) ...................................................... 40mA
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.
Recommended operation conditions
Symbol
Min
Typ
Max
Unit
VCCA Positive DC Supply Voltage
1.2
-
5.5
V
VCCB
VCCB Positive DC Supply Voltage
1.2
-
5.5
V
VEN
Enable Control Pin Voltage
GND
-
5.5
V
VIO
I/O Pin Voltage
GND
-
5.5
V
TA
Operating Temperature Range
-40
-
+85
°C
VCCA
Parameter
2015-07-0024
PT0462-3
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07/28/15
PI4ULS5V201
1-Bit Bi-directional Level Shifter with
Automatic Sensing
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DC Electrical Characteristics
Unless otherwise specified, -40°C≤TA≤85°C, 1.2V≤Vcc≤5.5V
Symbol
Parameter
Test Conditions
VIHB
B port Input HIGH Voltage
-
VILB
B port Input LOW Voltage
-
VIHA
A port Input HIGH Voltage
-
VILA
A port Input LOW Voltage
-
VIH
Control Pin Input HIGH Voltage
-
VIL
Control Pin Input LOW Voltage
-
VOHB
B port Output HIGH Voltage
B port source current = -20 µA
VOLB
B port Output LOW Voltage
B port sink current =1 mA
VOHA
A port Output HIGH Voltage
A port source current= -20 µA
VOLA
A port Output LOW Voltage
A port sink current =1 mA
IQVCB
VCCB Supply Current
IQVCA
VCCA Supply Current
ITS−VCCB
B Tri−state Output Mode
B port and A port unconnected, VEN
= VCCA
B port and A port unconnected, VEN
= VCCA
B port and A port unconnected, VEN
= GND
B port and A port unconnected, VEN
= GND
Min
VCCB –
0.2
VCCA –
0.2
VCCA –
0.2
2/3 *
VCCB
Typ
Max
Unit
-
-
V
-
0.15
V
-
-
V
-
0.15
V
-
-
V
-
0.15
V
-
-
V
-
-
1/3 *
VCCB
V
2/3 *
VCCA
-
-
V
-
-
1/3 *
VCCA
V
-
0.5
5.0
µA
-
0.3
5.0
µA
-
0.1
1
µA
A Tri−state Output Mode Supply
0.1
1
Current
I/O Tri−state Output Mode
IOZ
Leakage
0.1
1.0
Current
RPU
Pull−Up Resistors I/O A and B
10
Note: All units are production tested at TA = +25°C. Limits over the operating temperature range are guaranteed by design.
Typical values are for VCCB = +2.8 V, VCCA = +1.8 V and TA = +25°C.
ITS−VCCA
µA
µA
kΩ
AC Electrical characteristics
Timing Characteristics − Rail−to−Rail Driving Configuration
(I/O test circuits of Figures 2, 3 and 7, CLOAD = 15 pF, driver output impedance ≤ 50Ω, RLOAD = 1 MΩ, unless otherwise specified)
Symbol
Parameter
Test Conditions
Min
Typ
Max
Unit
VCCA= 1.8V , VCCB = 2.8V
tRB
B port Rise Time
-
-
-
15
nS
tFB
B port Fall Time
-
-
-
15
nS
tRA
A port Rise Time
-
-
-
25
nS
tFA
A port Fall Time
-
-
-
10
nS
Propagation Delay
(Driving A)
-
-
-
15
nS
-
-
-
15
nS
Propagation Delay
(Driving B)
-
-
-
15
nS
-
-
-
15
nS
tPPSKEW
Part−to−Part Skew
-
-
-
5
nS
MDR
Maximum Data Rate
-
20
-
-
Mbps
tPHL−A−B
tPLH−A−B
tPHL−B−A
tPLH−B−A
To be continued.
2015-07-0024
PT0462-3
3
07/28/15
PI4ULS5V201
1-Bit Bi-directional Level Shifter with
Automatic Sensing
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Continuously.
Symbol
VCCA= 2.8V , VCCB =1.8V
Parameter
Test Conditions
Min
Typ
Max
Unit
tRB
B port Rise Time
-
-
-
25
nS
tFB
B port Fall Time
-
-
-
10
nS
tRA
A port Rise Time
-
-
-
20
nS
tFA
A port Fall Time
-
-
-
15
nS
tPHL−A−B
Propagation Delay
(Driving A)
-
-
-
15
-
-
-
15
nS
nS
Propagation Delay
(Driving B)
-
-
-
15
-
-
-
15
nS
nS
Part−to−Part Skew
-
-
-
5
nS
Maximum Data Rate
VCCA= 2.5V , VCCB =3.6V
-
20
-
-
Mbps
tRB
B port Rise Time
-
-
-
15
nS
tFB
B port Fall Time
-
-
-
10
nS
tRA
A port Rise Time
-
-
-
15
nS
tFA
A port Fall Time
-
-
-
10
nS
tPHL−A−B
Propagation Delay
(Driving A)
-
-
-
15
nS
-
-
-
15
nS
Propagation Delay
(Driving B)
-
-
-
15
nS
-
-
-
15
nS
Part−to−Part Skew
-
-
-
5
nS
Maximum Data Rate
VCCA= 3.6V , VCCB =2.5V
tRB
B port Rise Time
-
20
-
-
Mbps
-
-
-
15
nS
tFB
B port Fall Time
-
-
-
10
nS
tRA
tPLH−A−B
tPHL−B−A
tPLH−B−A
tPPSKEW
MDR
tPLH−A−B
tPHL−B−A
tPLH−B−A
tPPSKEW
MDR
A port Rise Time
-
-
-
15
nS
tFA
A port Fall Time
-
-
-
15
nS
tPHL−A−B
Propagation Delay
(Driving A)
-
-
-
15
nS
-
-
-
15
nS
Propagation Delay
(Driving B)
-
-
-
15
nS
-
-
-
15
nS
Part−to−Part Skew
-
-
-
5
nS
Maximum Data Rate
-
20
-
-
Mbps
tPLH−A−B
tPHL−B−A
tPLH−B−A
tPPSKEW
MDR
To be continued.
2015-07-0024
PT0462-3
4
07/28/15
PI4ULS5V201
1-Bit Bi-directional Level Shifter with
Automatic Sensing
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Continuously.
Symbol
VCCA= 1.5V , VCCB = 5.5V
tRB
Parameter
Test Conditions
Min
Typ
Max
Unit
B port Rise Time
-
-
-
15
nS
tFB
B port Fall Time
-
-
-
20
nS
tRA
A port Rise Time
-
-
-
30
nS
tFA
A port Fall Time
-
-
-
10
nS
tPHL−A−B
Propagation Delay
(Driving A)
-
-
-
20
nS
-
-
-
20
nS
Propagation Delay
(Driving B)
-
-
-
20
nS
tPLH−B−A
-
-
-
20
nS
tPPSKEW
Part−to−Part Skew
-
-
-
5
nS
MDR
Maximum Data Rate
VCCA= 5.5, VCCB =1.5V
-
20
-
-
Mbps
tRB
B port Rise Time
-
-
-
30
nS
tFB
tPLH−A−B
tPHL−B−A
B port Fall Time
-
-
-
20
nS
tRA
A port Rise Time
-
-
-
15
nS
tFA
A port Fall Time
-
-
-
40
nS
tPHL−A−B
Propagation Delay
(Driving A)
-
-
-
20
nS
-
-
-
20
nS
Propagation Delay
(Driving B)
-
-
-
20
nS
-
-
-
20
nS
Part−to−Part Skew
-
-
-
5
nS
Maximum Data Rate
VCCA= 1.2V , VCCB = 5.5V
tRB
B port Rise Time
-
20
-
-
Mbps
-
-
-
15
nS
tFB
B port Fall Time
-
-
-
30
nS
tRA
A port Rise Time
-
-
-
30
nS
tFA
A port Fall Time
-
-
-
15
nS
Propagation Delay
(Driving A)
-
-
-
20
nS
-
-
-
15
nS
-
-
-
15
nS
tPLH−B−A
Propagation Delay
(Driving B)
-
-
-
15
nS
tPPSKEW
Part−to−Part Skew
-
-
-
nS
MDR
Maximum Data Rate
VCCA= 5.5V , VCCB = 1.2V
-
20
-
5
-
Mbps
tRB
B port Rise Time
-
-
-
30
nS
tFB
B port Fall Time
-
-
-
15
nS
tRA
A port Rise Time
-
-
-
15
nS
tFA
A port Fall Time
-
-
-
30
nS
tPHL−A−B
Propagation Delay
(Driving A)
-
-
-
15
nS
-
-
-
15
nS
-
-
20
nS
tPLH−B−A
Propagation Delay
(Driving B)
-
-
-
15
nS
tPPSKEW
Part−to−Part Skew
-
-
-
5
nS
MDR
Maximum Data Rate
-
20
-
-
Mbps
tPLH−A−B
tPHL−B−A
tPLH−B−A
tPPSKEW
MDR
tPHL−A−B
tPLH−A−B
tPHL−B−A
tPLH−A−B
tPHL−B−A
2015-07-0024
PT0462-3
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07/28/15
PI4ULS5V201
1-Bit Bi-directional Level Shifter with
Automatic Sensing
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Timing Characteristics – Open Drain Driving Configuration
(I/O test circuits of Figures 4, 5 and 7, CLOAD = 15 pF, driver output impedance ≤ 50Ω, RLOAD = 1 MΩ, unless otherwise specified)
Symbol
Parameter
Test Conditions
Min
Typ
Max
Unit
1.2 ≤ VCCA ≤ VCCB ≤ 5.5V
tRB
B port Rise Time
-
-
-
450
nS
tFB
B port Fall Time
-
-
-
30
nS
tRA
A port Rise Time
-
-
-
450
nS
tFA
A port Fall Time
-
-
-
30
nS
tPHL−A−B
Propagation Delay
(Driving A)
-
-
-
300
nS
-
-
-
300
nS
Propagation Delay
(Driving B)
-
-
-
300
nS
tPLH−B−A
-
-
-
300
nS
tPPSKEW
Part−to−Part Skew
-
-
-
50
nS
MDR
Maximum Data Rate
-
2
-
-
Mbps
tPLH−A−B
tPHL−B−A
Test Circuits
PI4ULS5V201
PI4ULS5V201
PI4ULS5V201
PI4ULS5V201
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PI4ULS5V201
1-Bit Bi-directional Level Shifter with
Automatic Sensing
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2015-07-0024
PT0462-3
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07/28/15
PI4ULS5V201
1-Bit Bi-directional Level Shifter with
Automatic Sensing
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Functional Description
The PI4ULS5V201 is a 1-bit configurable dual-supply bidirectional auto sensing translator that does not require a
directional control pin. The A and B ports are designed to track two different power supply rails, VCCA and VCCB
respectively. Both the VCCA and VCCB supply rails are configurable from 1.2 V to 5.5 V. This allows voltage logic
signals on the VCCA side to be translated into lower, higher or equal value voltage logic signals on the VCCB side, and
vice−versa.
The translator has integrated 10 kΩ pull−up resistors on the I/O lines. The integrated pull-up resistors are used to
pull−up the I/O lines to either VCCA or VCCB. The PI4ULS5V201 is an excellent match for open−drain applications
such as the I2C communication bus.
Application Information
Level Translator Architecture
The PI4ULS5V201 auto sense translator provides bidirectional voltage level shifting to transfer data in multiple
supply voltage systems. This device has two supply voltages, VCCA and VCCB, which set the logic levels on the input
and output sides of the translator. When used to transfer data from A port to B port, input signals referenced to the
VCCA supply are translated to output signals with a logic level matched to VCCB. In a similar manner, translation shifts
input signals with a logic level compatible to VCCB to an output signal matched to VCCA. The PI4ULS5V201 consists of
two bidirectional channels that independently determine the direction of the data flow without requiring a directional
pin. The one-shot circuits are used to detect the rising or falling input signals. In addition, the one shots decrease
the rise and fall time of the output signal for high−to−low and low−to−high transitions. Each input/output channel has
an internal 10 kΩ pull. The magnitude of the pull-up resistors can be reduced by connecting external resistors in
parallel to the internal 10 kΩ resistors.
Input Driver Requirements
The rise (tR) and fall (tF) timing parameters of the open drain outputs depend on the magnitude of the pull−up
resistors. In -addition, the propagation times (tPD), skew (tPSKEW) and maximum data rate depend on the impedance of
the device that is connected to the translator. The timing parameters listed in the data sheet assume that the output
impedance of the drivers connected to the translator is less than 50 kΩ.
Enable Input (EN)
The PI4ULS5V201 has an Enable pin (EN) that provides tri−state operation at the I/O pins. Driving the Enable
pin to a low logic level minimizes the power consumption of the device and drives the I/O VCCB and I/O VCCA pins to a
high impedance state. Normal translation operation occurs when the EN pin is equal to a logic high signal. The EN
pin is referenced to the VCCA supply and has overvoltage tolerant protection.
Power Supply Guidelines
During normal operation, supply voltage VCCA can be greater than, less than or equal to VCCB. The sequencing of
the power supplies will not damage the device during the power up operation. For optimal performance, 0.01 μF to
0.1μFdecoupling capacitors should be used on the VCCA and VCCB power supply pins. Ceramic capacitors are a good
design choice to filter and bypass any noise signals on the voltage lines to the ground plane of the PCB. The
noise immunity will be maximized by placing the capacitors as close as possible to the supply and ground pins,
along with minimizing the PCB connection traces.
2015-07-0024
PT0462-3
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07/28/15
PI4ULS5V201
1-Bit Bi-directional Level Shifter with
Automatic Sensing
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Mechanical Information
UDFN1.2x1.6-8L
2015-07-0024
PT0462-3
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07/28/15
PI4ULS5V201
1-Bit Bi-directional Level Shifter with
Automatic Sensing
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Recommended Land pattern for DFN1.6*1.2-8L
Note:
All linear dimensions are in millimeters
2015-07-0024
PT0462-3
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07/28/15
PI4ULS5V201
1-Bit Bi-directional Level Shifter with
Automatic Sensing
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SOT23-6L
Ordering Information
Part No.
Package Code
Package
PI4ULS5V201XVE
XV
Lead free and Green 8-pin UDFN1.2x1.6
PI4ULS5V201TAE
TA
Lead free and Green 6-pin SOT23
Note:
E = Pb-free and Green
Adding X Suffix= Tape/Reel
Pericom Semiconductor Corporation 1-800-435-2336 www.pericom.com
Pericom reserves the right to make changes to its products or specifications at any time, without notice, in order to improve design or performance and to supply
the best possible product. Pericom does not assume any responsibility for use of any circuitry described other than the circuitry embodied in Pericom product. The
company makes no representations that circuitry described herein is free from patent infringement or other rights, of Pericom.
2015-07-0024
PT0462-3
11
07/28/15