LSF Family

Auto-sensing bidirectional voltage
level translators

Over the last decade semiconductor CMOS technology has advanced
to produce high-performance systems with lower voltage and lower
power I/O standards, especially in portable applications. This led toconfrontation amongst engineers with an increasing complexity ofmodern portable electronic systems in which low power and voltage
logic levels are used. Incompatibility between I/O levels becomes
prevalent if different interface voltages are required within thesystem allowing safe communication between multiple devices
without damage due to over voltage or other reasons.
When older legacy peripherals are used in multi-voltage applications,these higher voltage devices need to be interfaced with the lower
voltages of the latest application processors that are used widely
today. Nexperia’s LSF switch-type translators enable these voltage
translating interfaces and can be used for both open-drain andpush-pull buffered applications.

Overview
Nexperia’s Voltage Level Translators offer lower voltage
and excellent performance in pin-to-pin compatible
packages with industry-standard footprints. The LSF
family comprises of dual supply, bidirectional voltage
level translators operational from 0.95 V to 5.5 V
allowing translation without the need for a direction
pin in open-drain and push-pull applications. The LSF
family supports level translation applications withtransmission speed greater than 100Mbps for open drain
utilizing a 30pF capacitance and 200ohm pull-up resistor.
Minimal propagation delay and signal distortion for theconnections to be made due to low RON, assuming
higher voltage is on the B-side port.

Applications› Open-drain applications• I2C Bus, SMBus• PMBus› UARTs, HDMI, 1-wire sensor Bus› GPIO and other telecom infrastructure› Bluetooth headsets› Mobile and computing› Communications systems› Enterprise Systems› Automotive

LSF Family

Key features› Complete family – comprising of 1,2,4 and 8-channel› Bidirectional voltage level translation between:

level translators› Easy to use – Dual supply translator family› Auto-sensing bidirectional voltage translation- no direction pin required› Low RON provides less signal distortion› High speed Up translation• ≤ 100 MHz; CL = 30 pF• ≤ 40 MHz; CL = 50 pF› High speed Down translation• ≥ 100 MHz; CL = 30 pF• ≤ 40 MHz; CL = 50 pF› Supports hot insertion• 0.95 V and 1.8 V, 2.5 V, 3.3 V and 5.0 V• 1.2 V and 1.8 V, 2.5 V, 3.3 V and 5.0 V• 1.8 V and 2.5 V, 3.3 V and 5.0 V• 2.5 V and 3.3 V and 5.0 V• 3.3 V and 5.0 V› Low standby current› 5 V tolerant I/O pins to support TTL› Low RON provides less signal distortion› High-impedance I/O pins for EN = Low.
› Flow-through pinout for easy PCB trace routing.
› Specified from -40 °C to +125 °C

ProductDescription

VCC(A) (V)VCC(B) (V)

Tamb (°C)

Type(s)LSF0101

1-bit bidirectional multi-voltage
level translator; open-drain;push-pull

0.95 – 5.0

0.95 – 5.0-40 °C to +125 °C

LSF0101GM,
LSF0101GX,LSF0101GW**

LSF0102

2-bit bidirectional multi-voltage
level translator; open-drain;push-pull

0.95 – 5.0

0.95 – 5.0-40 °C to +125 °C

LSF0102DP,
LSF0102DC,
LSF0102GS,
LSF0102GX,LSF0102DC-Q100,
LSF0102DP-Q100

LSF0204

4-bit bidirectional multi-voltage
level translator; open-drain;push-pull

0.8 – 5.0

0.8 – 5.0-40 °C to +125 °C

LSF0204GU12,
LSF0204PW,
LSF0204PW-Q100

LSF0108

8-bit bidirectional multi-voltage
level translator; open-drain;push-pull

0.95 – 5.0

0.95 – 5.0-40 °C to +125 °C

LSF0108PW,
LSF0108BQ,
LSF0108BQ-Q100,
LSF0108PW-Q100- **In development

Packages
Functional diagram

Pinning
configuration

SOT#

PackagesuffixPackagename

No ofpins

Dimensions(L x W,pitch - in mm)

SOT886GMXSON66

1 x 1.45, 0.5

SOT363GWTSSOP66

2.1 x 2, 0.65

SOT1255-2

GXX2SON66

1 x 0.8, 0.8

Package

EN25refB

A1

34

B1

LSF0101

ON6refA

XS

16

LSF0101
GND

aaa-030905

Transparent top view

refB

A1

B1

16EN

refA 25refB

34

B1

GND

EN

A1

aaa-030903

aaa-030904

LSF0101
GND

1refA

A1

62

35EN

refB

4
aaa-030906

Transparent top view

B1

TSSO
P6

refA

LSF0101LSF Family

Pinning
configuration

SOT#Package
suffixPackagename

No ofpins

Dimensions(L x W,pitch - in mm)

SOT1233-2

GXX2SON881.35 X 0.8, 0.5

SOT1203

GS

XSON881.35 X 1, 0.55

SOT505-2

DPTSSOP884 X 3, 0.65

SOT765-1

DCVSSOP88

3.1 x 2, 0.5

SOT402-1

PW

TSSOP14

14

6.4 x 5, 0.65

SOT1174-1

GU12XQFN12122 x 1.7, 0.4

SOT764-1

BQ

DHVQFN2020

2.5 x 4.5, 0.5

DHFunctional diagram

SOT360-1

PW

TSSOP2020

6.4 x 6.5, 0.65

TSSO
P20Packages

Package

LSF0102
1

GND7

refB

6B15B28EN
refA 24A2A13aaa-031135

Transparent top view

refB

A1

B1A2B2

18EN

refA

27

refB

A136

B1A245B2XS

refA

GND

ON
8LSF0102

LSF0102aaa-031134

18EN

refA 27

refB

A1

36

B1

A245

B2

GND

SO
P8

LSF0102aaa-031132

TSEN

Transparent top view

aaa-031133

refB

6

B1

45

B2SO

EN

73A2

VS

8

A1P8

LSF0102
1refA 2GND

aaa-031133

LSF0204

400 kΩ

refA

refB

312 B2A3

411 B3A4510 B4n.c.

69n.c.

GND

78EN

413 B1A2P1

2SO

LSF0204

14 refB

A1TS

refA 1aaa-031586

ENBn

LSF0204
12 EN

aaa-031585

11 refB

A1 210 B1

A2 39 B2

A3 48 B3

A4 5

7 B4

GND 6

to other channels

12

refA 1FNterminal 1
index area

XQAn

aaa-031587

Transparent top view

B1A2

B2A3B319 refB

318 B1A2417 B2A3516 B3A4615 B4A5714 B5

A68A79GND (1)

202A1VQFN

G ND
1A1refA

13 B612 B7

A8 10

refB

B8 11LSF0108
refA20 EN

LSF0108
terminal 1index area

aaa-030282

Transparent top view

A4

B4A5B5A6B6A7B7A8EN

B8aaa-030280

LSF0108
120 EN

refA 219 refB

GNDA1

318 B1A2417 B2A3516 B3A4615 B4

A5714 B5A6

813 B6A7912 B7A8 1011 B8aaa-030281© 2021 Nexperia B.V.
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Date of release:
February 2021
Printed:In the Netherlands