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Key Specifications

 

UM3308QB 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 V_CCA. V_CCA accepts any supply voltage from 1.2V to 3.6V. The B port is designed to track V_CCB. V_CCB 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 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 UM3308QB is designed so that the OE input circuit is supplied by V_CCA.

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 UM3308QB is available in QFN20 3.0 ×3.0 package.

Features

 

- 1.2V to 3.6V on A Port and 1.65V to 5.5V on B Port (V_CCA≤V_CCB)

- V_CC Isolation Feature – If Either V_CC Input is at GND, All Outputs are in the High-Impedance State

- OE Input Circuit Referenced to V_CCA

- Low Power Consumption

- Latch-Up Performance Exceeds 100mA

- ±7kV ESD Protection on B Ports

 

  

 

- Low-Voltage ASIC Level Translation

- Cell-Phone Cradles

- Portable POS Systems

- Portable Communication Devices

- Low-Cost Serial Interfaces

- Cell-Phones

- GPS

- Telecommunications Equipment

 

Part Number	Packaging Type	Marking Code	Shipping Qty
UM3308QB	QFN20 3.0×3.0	UM3308QB	3000pcs/13Inch Tape & Reel