TXB0108集成电路（IC）的转换器电平移位器规格书PDF中文资料

TXB0108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TXB0108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

• 1.2V to 3.6V on A Port and 1.65V to 5.5V on B

Port (VCCA ≤ VCCB)

• VCC Isolation Feature – If Either VCC Input Is at

GND, All Outputs Are in the High-Impedance State

• OE Input Circuit Referenced to VCCA

• Low Power Consumption, 4μA Max ICC

• Ioff Supports Partial-Power-Down Mode Operation

• Latch-Up Performance Exceeds 100mA Per JESD

78, Class II

• ESD Protection Exceeds JESD 22

– A Port

• 2000V Human-Body Model (A114-B)

• 1000V Charged-Device Model (C101)

– B Port

• ±15kV Human-Body Model (A114-B)

• ±8kV Human-Body Model (A114-B) (YZP

Package Only)

• 1000V Charged-Device Model (C101)

2 Applications

• Handset

• Smartphone

• Tablet

• Desktop PC

3 Description

This 8-bit noninverting translator uses two separate

configurable power-supply rails. The A port is

designed to track VCCA. VCCA accepts any supply

voltage from 1.2V to 3.6V. The B port is designed

to track VCCB. VCCB accepts any supply voltage from

1.65V to 5.5V. This allows for universal low-voltage

bidirectional translation between any of the 1.2V, 1.5V,

1.8V, 2.5V, 3.3V, and 5V voltage nodes. VCCA should

not exceed VCCB.

When the output-enable (OE) input is low, all outputs

are placed in the high-impedance state.

The TXB0108 is designed so that the OE input circuit

is supplied by VCCA.

This device is fully specified for partial-power-down

applications using Ioff. The Ioff circuitry disables

the outputs, preventing damaging current backflow

through the device when it is powered down.

To ensure the high-impedance state during power-up

or power-down, OE should be tied to GND through a

pulldown resistor; the minimum value of the resistor

is determined by the current-sourcing capability of the

driver.