UM3301 Datasheet, PDF (1/13 Pages) ShenZhen XinDeYi Electronics Co., Ltd. – N-Ch and P-Ch Fast Switching MOSFETs

UM3301
1-Bit Bidirectional Voltage-Level Translator
with Auto Direction Sensing
UM3301B SOT563
UM3301DA DFN6 1.45×1.0
General Description
The UM3301B/UM3301DA series is one channel level translator with auto direction sensing. This
1-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 control pin is required,
making it ideal for data transfer between low-voltage ASICs/PLDs and higher voltage systems.
The UM3301B/UM3301DA 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
UM3301B/UM3301DA is designed so that the OE input circuit is designed to track 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 UM3301DA is available in 1.45mm×1.0mm DFN6 package while the UM3301B is packaged
in a SOT563 package.
Applications
Features
 Low-Voltage ASIC Level Translation
 Cell-Phone Cradles
 Portable POS Systems
 Portable Communication Devices
 Low-Cost Serial Interfaces
 Cell-Phones
 GPS
 Telecommunications Equipment
 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
 ±5kV ESD Protection on B Ports
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