Union Semiconductor UM3208H

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, VCCA and VCCB, 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 (ΔVCCA⇔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 UM3208H is available in CSP20 2.4×1.9 bump package and specially features in wafer backside coating process, making the chip more robust. The UM3208UK is available in TSSOP20 package and the UM3208QA is available in QFN20 4.5×3.5 package.

• Max Data Rates: 24Mbps(Push Pull), 2Mbps(Open Drain)
• Bidirectional Level Translation
• 1.65V to 3.6V on A port and 2.3V to 5.5V on B port (ΔVCCA≪VCCB)
• ±6kV ESD Protection on B port
• Latch-Up Performance Exceeds 100mA
• No Power-Supply Sequencing Required (VCCA or VCCB Can Be Ramped First)
• Low Power Consumption

• SPI, MICROWRE, and I2C Level Translation
• Low-Voltage ASIC Level Translation
• Smart Card Readers
• Cell-phone Cradles
• Portable POS Systems
• Portable Communication Devices
• Low-Cost Serial Interfaces
• Cell-Phones
• GPS
• Telecommunications Equipment