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LSF0204-Q1 Automotive Qualified 4-Bit Auto-Bidirectional Multi-Voltage Level

Translator

1 Features

•AEC-Q100 qualified for automotive applications

–Temperature grade 1: –40°C ≤ T

A

≤ 125°C

–Device HBM ESD classification level 2

–CDM ESD classification level C6

•Provides auto-bidirectional voltage translation

without direction pin

•Supports open drain or push-pull applications such

as I

2

C, I2S, SPI, UART, JTAG, MDIO, SDIO, and

GPIO

•Supports up to 100-MHz up translation and greater

than 100-MHz down translation

at ≤ 30-pF capacitor load and up to 40-MHz up/

down translation at 50-pF capacitor load

•Supports I

off

, partial power down mode (see

Section 7.3)

•Allows bidirectional voltage level translation

between

–0.95 V ↔ 1.8, 2.5, 3.3, 5.5 V

–1.2 V ↔ 1.8, 2.5, 3.3, 5.5 V

–1.8 V ↔ 2.5, 3.3, 5.5 V

–2.5 V ↔ 3.3, 5.5 V

–3.3 V ↔ 5.5 V

•5-V tolerance on I/O ports

•Low R

on

enables better signal integrity

•Flow-through pinout for easy PCB trace routing

•Latch-up performance exceeds 100 mA per

JESD17

2 Applications

•I2S, JTAG, SPI, SDIO, UART, I

2

C, MDIO, PMBus,

SMBus and other interfaces

•Infotainment head unit

•Graphical cluster

•ADAS fusion

•ADAS front camera

•HEV battery management system

3 Description

The LSF0204-Q1 is automotive qualified four channel

auto bidirectional voltage translator that operate from

0.8 V to 4.5 V (Vref_A) and 1.8 V to 5.5 V (Vref_B).

This range allows for bidirectional voltage translations

between 0.8 V and 5.5 V without the need for a

direction pin.

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 R

on

of the

switch allows connections to be made with minimal

propagation delay and minimal signal distortion. The

voltage on the A or B side will be limited to Vref_A and

can be pulled up to any level between Vref_A and 5.5

V

The supply voltage (V

PUn

) for each channel may be

individually set up with a pull up resistor. For example,

CH1 may be used in up-translation mode (1.2 V ↔

3.3 V) and CH2 in down-translation mode (2.5 V ↔

1.8 V).

When EN is HIGH, the translator switch is on, and

the An I/O is connected to the Bn I/O, respectively,

allowing bidirectional data flow between ports. When

EN is LOW, the translator switch is off, and a high-

impedance state exists between ports. The EN input

circuit is designed to be supplied by Vref_A. EN must

be LOW to ensure the high-impedance state during

power-up or power-down.

Device Information

(1)

PART NUMBERPACKAGEBODY SIZE (NOM)

LSF0204QPWRQ1TSSOP (14)5.00 mm × 4.40 mm

(1)For all available packages, see the orderable addendum at

the end of the datasheet.

LSF0204-Q1

Vref_A

A1

A2

A3

A4

Vref_B

EN

B1

B2

B3

B4

200 KΩ

Level Converter

Simplified Schematic

www.ti.com

LSF0204-Q1

SLVSEM4B – JUNE 2018 – REVISED APRIL 2021

Copyright ©2021 Texas Instruments Incorporated

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LSF0204-Q1

SLVSEM4B – JUNE 2018 – REVISED APRIL 2021

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.

Product specificaties