2-Bit Bidirectional Voltage-Level Translator with
Auto Direction Sensing and ±15kV ESD Protection
UM3302H CSP8 1.90×0.90
The UM3302, an ESD protected level translator, provides the level shifting necessary to allow
data transfer in multi-voltage system. This 2-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 UM3302 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
UM3302 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 UM3302H is a dual channel level translator available in 1.90mm×0.90mm CSP8 bump
package while the UM3302M8 is available in MSOP8 package.
z Low-Voltage ASIC Level Translation
z Cell-Phone Cradles
z Portable POS Systems
z Portable Communication Devices
z Low-Cost Serial Interfaces
z Telecommunications Equipment
z 1.2V to 3.6V on A Port and 1.65V to 5.5V
on B Port (VCCA≤VCCB)
z VCC Isolation Feature – If Either VCC
Input is at GND, All Outputs are in the
z OE Input Circuit Referenced to VCCA
z Low Power Consumption
z Latch-Up Performance Exceeds 100mA
z ±15kV ESD Protection on B Ports
M: Month Code
http://www.union-ic.com Rev.09 Aug.2016