LSF0108集成电路（IC）的转换器电平移位器规格书PDF中文资料

LSF0108属于集成电路（IC）的转换器电平移位器。由德州仪器制造生产的LSF0108转换器，电平移位器逻辑转换器或电平移位器 IC 可用于在数字逻辑设备之间传递信息，这些设备可在不同/不兼容的供电电压下工作，或可实现不同的信令方式。例如，可以将需要 5 V 电源的数字输出传感器连接到具有 3.3 V I/O 电源的 FPGA，或者在 CMOS 或 TTL 等单端信令方式与 PECL 或 LVDS 等差分技术之间进行转换。

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 cap load and up To 40-MHz up/down

translation at 50 pF cap load

• Allows bidirectional voltage-level translation

between

– 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 RON 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, I2C,

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, I2C, 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 cap load and up to 40-

MHz up/down translation at 50 pF cap 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.