UM3211P Datasheet, PDF (1/10 Pages) Union Semiconductor, Inc. – Bidirectional voltage level translator for open-drain and push-pull applications

UM3211P
Bidirectional voltage level translator for open-drain and
General Description
push-pull applications
UM3211P SOT363
The UM3211P is a bidirectional voltage level translator operational from 1.0V to 3.6V (V_CCA) and
1.8V to 5.5V (V_CCB), 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 UM3211P 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 (R_on) 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
 SPI, MICROWIRE, and I²C Level  Provides bidirectional voltage translation
Translation
with no direction pin
 Low-Voltage ASIC Level Translation  Less than 1.5 ns maximum propagation
 Smart Card Readers
delay
 Cell-phone Cradles
 Low 3.5Ω ON-state connection between
 Portable POS Systems
input and output ports provides less signal
 Portable Communication Devices
distortion
 Low-Cost Serial Interfaces
 5V tolerant I/O ports to support
 Cell-Phones
mixed-mode signal operation
 GPS
 High-impedance A and B pins for
 Telecommunications Equipment
EN = LOW
 Consumer Electronics
 Latch up free operation
 Household Appliances
 Flow through pinout for ease of
printed-circuit board trace routing
 ESD protection exceeds:
4kV HBM per JESD22-A114
 Package offered: SOT363
Pin Configurations
Top View
(Top View)
M: Month Code
UM3211P SOT363
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http://www.union-ic.com Rev.01 Dec.2013
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