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LSF0101, LSF0102, LSF0108
SDLS966B – DECEMBER 2013 – REVISED MARCH 2014
LSF010x Single/Dual Bidirectional Multi-Voltage Level Translator for Open-Drain & PushPull Application
1 Features
2 Applications
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Provides Bidirectional Voltage Translation With No
Direction Terminal
Less Than 1.5ns Max Propagation Delay
Supports High Speed Translation, Greater Than
100MHz
Supports Hot Insertion
Allow Bidirectional Voltage Level Translation
Between
– 1.0V ↔ 1.8/2.5/3.3/5V
– 1.2V ↔ 1.8/2.5/3.3/5V
– 1.8V ↔ 2.5/3.3/5V
– 2.5V ↔ 3.3/5V
– 3.3V ↔ 5V
Low Standby Current
5V Tolerance I/O Port to Support TTL
Low Ron Provides Less Signal Distortion
High-Impedance I/O terminals For EN = Low
Flow-Through Pinout for Ease PCB Trace Routing
Latch-Up Performance Exceeds 100mA Per JESD
17
–40°C to 125°C Operating Temperature Range
ESD Performance Tested Per JESD 22
– 2000V Human-Body Model
(A114-B, Class II)
– 200V Machine Model (A115-A)
– 1000V Charged-Device Model (C101)
GPIO, MDIO, PMBus, SMBus, SDIO, UART, I2C,
and Other Interfaces in Telecom Infrastructure
Industrial
Automotive
Personal Computing
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3 Description
The LSF family are bidirectional voltage level
translators operational from 1.0 V to 4.5 V (Vref_A)
and 1.8 V to 5.5 V (Vref_B). This allows bidirectional
voltage translations between 1.0 V and 5.0 V without
the need for a direction terminal in open-drain or
push-pull applications. LSF family supports level
translation applications with transmission speeds
greater than 100Mbps for open-drain systems utilizing
a 30 pF capacitance and 250Ω pull-up resistor.
When the An or Bn port is LOW, the switch is in the
ON-state and a low resistance connection exists
between the An and Bn ports. The low Ron of the
switch allows connections to be made with minimal
propagation delay and signal distortion. Assuming the
higher voltage is on the Bn port when the Bn port is
HIGH, the voltage on the An port is limited to the
voltage set by Vref_A. When the An port is HIGH, the
Bn port is pulled to the drain pull-up supply voltage
(Vpu#) by the pull-up resistors. This functionality
allows a seamless translation between higher and
lower voltages selected by the user without the need
for directional control.
Device Information
ORDER NUMBER
PACKAGE
BODY SIZE
LSF0101DRY
1,45mm × 1,0mm
LSF0102DQE
X2SON (8)
1,4mm × 1,0mm
LSF0102YZT
DSBGA (8)
1,9mmm × 1,0mm
LSF0108RKS
VQFN (20)
4,5mm × 2,5mm
LSF0102
LSF0101
A1
1
8
A2
7
Vref_B
A1
3
6
B1
A2
4
5
B2
A8
B8
PR
10
11
2
B2
8
3
7
1
2
A1
2
EN
GND
Vref_A
Vref_A
B1
B2
B1
Vref_B
EN
4
C2
5
D2
6
A2
GND
5
3
6
B1
4
C1
7
4
D1
A4
3
A2
A1
Vref_A
A5
Vref_B
8
EN
9
6
5
A6
1
2
LSF0108
RKS Package
(TOP VIEW)
DQE Package
(TOP VIEW)
A7
GND
Vref_A
YZT Package
(TOP VIEW)
A3
DRY Package
(TOP VIEW)
A1
SON (6)
EV
1
20
GND
EN
18
B1
Vref_B
B3
B2
19
16
B5
B4
17
14
B7
B6
15
12
13
IEW
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.