4-Bit Bidirectional Voltage-Level Translator with Auto Direction sensing and ±15kV ESD Protection


Union Semiconductor

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Unit Price:$0.60
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Product Information

UM3304/UM3304Q is quad channel level translator with auto direction sensing and ±15kV ESD protection. This 4-channel noninverting 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 UM3304/UM3304Q 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 UM3304/UM3304Q is designed so that the OE input circuit is designed to track 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 UM3304 is a quad level translator available in 1.90mm×1.40mm CSP 12 bump package while the UM3304Q is packaged in a 3.50mm×3.50mm WQFN-14 package.


1.2V to 3.6V on A Port and 1.65V to 5.5V on B Port (VCCA =VCCB)
VCC Isolation Feature Ä If Either VCCInput 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