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Key Specifications
The UM3208 is 8-channel ESD-protected level translator provides the level shifting necessary to allow data transfer in a multi-voltage system. Externally applied voltages, VCCB and VCCA, set the logic levels on either side of the device. A low-voltage logic signal present on the VCCA side of the device appears as a high-voltage logic signal on the VCCB side of the device, and vice-versa. The UM3208 bidirectional level translator utilizes a transmission-gate based design to allow data translation in either direction (VCCA↔VCCB) on any single data line. The UM3208 accepts VCCA from +1.65V to +3.6V and VCCB from +2.3V to +5.5V, making it ideal for data transfer between low-voltage ASICs / PLDs and higher voltage systems.
The UM3208 enters a three-state output mode to reduce supply current when output enable (OE) is low. The UM3208 is designed so that the OE input circuit is supplied by VCCA. ±6kV ESD protection on the VCCB side for greater protection in applications that route signals externally. The UM3208QA is available in QFN20 4.5×3.5 package. Features - 1.65V to 3.6V on A Port and 2.3V to 5.5V on B Port (VCCA≤VCCB)
- Bidirectional Level Translation
- No Power Supply Sequencing Required, VCCA or VCCB Can be Rampde First
- Low Power Consumption
- Latch-Up Performance Exceeds 100mA
- ±6kV ESD Protection on B Ports
Applications
- Low-Voltage ASIC Level Translation
- Smart Card Reader - SPI, Micpower and I2C Level Translation - Cell-Phone Cradles
- Portable POS Systems
- Portable Communication Devices
- Low-Cost Serial Interfaces
- Cell-Phones
- GPS
- Telecommunications Equipment
Pin Configurations
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Ordering Information
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Application Notes
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