UM2001P
Bidirectional Voltage Level Translator for
Open-Drain and Push-Pull Applications
UM2001P SOT363
General Description
The UM2001P is a bidirectional voltage level translator operational from 1.0V to 3.6V (VCCA) and
1.8V to 5.5V (VCCB), which allows bidirectional voltage translations between 1.0V and 5V
without the need for a direction pin in open-drain or push-pull applications. The UM2001P is a
1-bit level translator. Its transmission speeds are below 33MHz for an open-drain system with a
50pF capacitance and a pull-up resistor of 197Ω.
The low ON-state resistance (Ron) of the switch allows connections to be made with minimal
propagation delay. When EN is high, the translator switch is ON, and the A I/O is connected to
the B I/O, allowing bidirectional data flow between ports. When EN is low, the translator switch
is off, and a high-impedance state exists between ports.
The translators provide excellent ESD protection to lower voltage devices, and at the same time
protect less ESD-resistant devices.
Applications
Features
z SPI, MICROWIRE, and I2C Level z Provides Bidirectional Voltage Translation
Translation
with No Direction Pin
z Low-Voltage ASIC Level Translation z Less than 1.5ns Maximum Propagation
z Smart Card Readers
Delay
z Cell-phone Cradles
z Low 3.5Ω ON-State Connection between
z Portable POS Systems
Input and Output Ports Provides Less
z Portable Communication Devices
Signal Distortion
z Low-Cost Serial Interfaces
z 5V Tolerant I/O Ports to Support
z Cell-Phones
Mixed-Mode Signal Operation
z GPS
z High-Impedance A and B Pins for
z Telecommunications Equipment
EN=LOW
z Consumer Electronics
z Latch up Free Operation
z Household Appliances
z Flow through Pinout for Ease of
Printed-Circuit Board Trace Routing
z ESD Protection Exceeds:
4kV HBM per JESD22-A114
z Package Offered: SOT363
Pin Configurations
Top View
M: Month Code
UM2001P
SOT363
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http://www.union-ic.com Rev.04 Aug.2016
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