UM3308UK

UM3308/UM3308H/UM3308UK/UM3308QA/UM3308QB is an 8-channel bidirectional voltage level translator with auto direction sensing and ±15kV 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/UM3308H/UM3308UK/UM3308QA/UM3308QB 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/UM3308UK/UM3308QA/UM3308QB 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 and UM3308H are both available in CSP20 2.4×1.9 BGA package while the UM3308H specially features in wafer backside coating process, minimize chip breakage risk. The UM3308UK is available in TSSOP20 package, the UM3308QA is available in QFN20 4.5×3.5 package and the UM3308QB is available in QFN20 3.0×3.0 package.

Applications

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

Key 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
• ±15kV ESD Protection on B Ports