SN74AVCH20T245VR集成电路（IC）的转换器电平移位器规格书PDF中文资料

SN74AVCH20T245VR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SN74AVCH20T245VR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。

Control Inputs VIH/VIL Levels are

Referenced to VCCA Voltage

VCC Isolation Feature − If Either VCC Input

Is at GND, Both Ports Are in the

High-Impedance State

Overvoltage-Tolerant Inputs/Outputs Allow

Mixed-Voltage-Mode Data Communications

Fully Configurable Dual-Rail Design Allows

Each Port to Operate Over the Full 1.2-V to

3.6-V Power-Supply Range

Ioff Supports Partial-Power-Down Mode

Operation

I/Os Are 4.6-V Tolerant

Bus Hold on Data Inputs Eliminates the

Need for External Pullup/Pulldown

Resistors

Max Data Rates

− 380 Mbps (1.8-V to 3.3-V Translation)

− 260 Mbps (< 1.8-V to 3.3-V Translation)

− 260 Mbps (Translate to 2.5 V)

− 210 Mbps (Translate to 1.8 V)

− 120 Mbps (Translate to 1.5 V)

− 100 Mbps (Translate to 1.2 V)

Latch-Up Performance Exceeds 100 mA Per

JESD 78, Class II

ESD Protection Exceeds JESD 22

− 8000-V Human-Body Model (A114-A)

− 200-V Machine Model (A115-A)

− 1000-V Charged-Device Model (C101)

description/ordering information

This 20-bit noninverting bus transceiver uses two separate configurable power-supply rails. The

SN74AVCH20T245 is optimized to operate with VCCA/VCCB set at 1.4 V to 3.6 V. It is operational with VCCA/VCCB

as low as 1.2 V. The A port is designed to track VCCA. VCCA accepts any supply voltage from 1.2 V to 3.6 V. The

B port is designed to track VCCB. VCCB accepts any supply voltage from 1.2 V to 3.6 V. This allows for universal

low-voltage bidirectional translation between any of the 1.2-V, 1.5-V, 1.8-V, 2.5-V, and 3.3-V voltage nodes.