UM3308中文资料具有自动方向检测和±7kV ESD保护的8位双向电压电平转换器数据手册Union-IC规格书

描述 Description

UM3308 is 8-channel bidirectional voltage level translator with auto direction sensing and ±7kV ESD protection. This 8-channel non-inverting 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. Both I/O ports are auto-sensing; thus, no direction pin is required, making it ideal for data transfer between low-voltage ASICs/PLDs and higher voltage systems.

The UM3308 operates at a guaranteed data rate of 20Mbps over the entire specified operating voltage range. Within specific voltage domains, higher data rates are up to 100Mbps.

When the output-enable (OE) input is low, all outputs are placed in the high-impedance state. The UM3308/UM3308H is designed so that the OE input circuit is supplied by VCCA.

To ensure the high-impedance state during power up or power down, OE should be tied to GND through a pull down resistor; the minimum value of the resistor is determined by the current-sourcing capability of the driver.

The UM3308 is available in CSP20 2.4×1.9 bump package.

特性 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
- Latch-Up Performance Exceeds 100mA
- ±7kV ESD Protection on B Ports

应用 Application

- Low-Voltage ASIC Level Translation
- Cell-Phone Cradles
- Portable POS Systems
- Portable Communication Devices
- Low-Cost Serial Interfaces
- Cell-Phones
- GPS
- Telecommunications Equipment