Texas Instruments LSF0108 Bedienungsanleitung

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LSF0108 Channel Auto-Bidirectional Multi-Voltage Level Translator for Open-Drain

and Push-Pull Applications

1 Features

•Provides bidirectional voltage translation with no

direction pin

•Supports up to 100-MHz up translation and greater

than 100-MHz down translation at

≤ 30 pF capacitive load and up To 40-MHz up or

down translation at 50 pF capacitive load

•Allows bidirectional voltage-level translation

between

–0.65 V ↔ 1.8/2.5/3.3/5 V

–0.95 V ↔ 1.8/2.5/3.3/5 V

–1.2 V ↔ 1.8/2.5/3.3/5 V

–1.8 V ↔ 2.5/3.3/5 V

–2.5 V ↔ 3.3/5 V

–3.3 V ↔ 5 V

•Low standby current

•5-V tolerance I/O port to support TTL

•Low R

ON

provides less signal distortion

•High-impedance I/O pins for EN = Low

•Flow-through pinout for easy PCB trace routing

•Latch-up performance >100 mA per JESD 17

•–40°C to 125°C operating temperature range

2 Applications

•GPIO, MDIO, PMBus, SMBus, SDIO, UART, I

2

C,

and other interfaces in telecom infrastructure

•Enterprise systems

•Communications equipment

•Personal electronics

•Industrial applications

3 Description

The LSF family of devices supports bidirectional

voltage translation without the need for DIR pin which

minimizes system effort (for PMBus, I

2

C, SMBus, and

so forth). The LSF family of devices supports up to

100-MHz up translation and greater than 100-MHz

down translation at ≤ 30 pF capacitive load and up to

40-MHz up or down translation at 50 pF capacitive

load which allows the LSF family to support more

consumer or telecom interfaces (MDIO or SDIO).

LSF family supports 5-V tolerance on I/O port which

makes it compatible with TTL levels in industrial and

telecom applications. The LSF family is able to set

up different voltage translation levels on each channel

which makes it very flexible.

Package Information

PART NUMBERPACKAGE

(1)

BODY SIZE (NOM)

LSF0108

RKS (VQFN, 20)4.50 mm × 2.50 mm

PW (TSSOP, 20)4.40 mm × 6.50 mm

DGS (VSSOP, 20)3.00 mm × 5.10 mm

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

the end of the data sheet.

Vref_A

Vref_B

2

19

3

4

5

6

20

EN

18

17

16

15

1

GND

A1

A2

A3

A4

B1

B2

B3

B4

SW

7

8

9

10

14

13

12

11

A5

A6

A7

A8

B5

B6

B7

B8

SW

SW

SW

SW

SW

SW

SW

Functional Block Diagram

LSF0108

SDLS966M – DECEMBER 2013 – REVISED MAY 2023

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.

Produktspezifikationen